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Mesures de la section efficace de la réaction 7Be(p,γ)8B à
basse énergie et implications dans le problème des
neutrinos solaires
Fairouz Hammache
To cite this version:
Fairouz Hammache. Mesures de la section efficace de la réaction 7 Be(p,γ)8 B à basse énergie et implications dans le problème des neutrinos solaires. Cosmologie et astrophysique extra-galactique [astroph.CO]. Université Paris Sud - Paris XI, 1999. Français. �tel-00002668�
HAL Id: tel-00002668
https://tel.archives-ouvertes.fr/tel-00002668
Submitted on 1 Apr 2003
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1.2
1
0.8
0.6
0.4
0.2
0
10
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1
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Section efficace (nb)
10 3
10 2
7
Be(p,γ)8B
10
1
10
10
10
10
10
10
10
10
-1
-2
-3
-4
-5
-6
-7
Energie solaire
-8
10
-2
10
-1
1
Ecm (MeV)
)I 7 #;D&
Æ
" ? + ,-. / , * + Æ 2 "
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&! LM , Æ &
5 8 % - ! 0 )5G ! N 2 4 / + 7 '* L*M 0 & 5) '
8 R " &! ' LM & 5)) 8 *# 8 8 &! 5 L5M & 5* 8 * 8 . 5# 8 ?O 7 LM = 0 * $ L'M . "
& 0 & 5 8 8 3 . & - , = / . J ! ! = ! 2 =& # - 0 &
" A - !/. 1 .
Æ " I
; ;XX
! & "
< - " X X &
> / = 0 & S (eV-b)
- ! - & Æ 1
" - !/. < & - & - 100
Filippone et al.(83)
Wiezoreck et al.(77)
Vaughn et al.(70)
Kavanagh et al.(69)
Parker et al.(68)
Kavanagh et al.(60)
90
80
70
60
50
40
30
20
10
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Ecm (MeV)
#I 3 7 7
< 7 ? Æ
? " ? $):$$ 6 #$!& 7 > N / 6 F =& /
B & 0
0 0
" 0 " 5G 1 5
B - !/. 0 & LM 3 . 0 "
- < Æ E<
- E " " - !/. 0 & O < 5 > Q! LM ) 8A 1A / < 5
R "
&! + 7 8 &! $ 3 & . 0 " Æ L*M ! " Q! Æ #5 ) > 0! % " < 5 A
& " - L M . . AB = 0 " - > . " 2 ! ! - #5 78 ) 8 - ! A 5
78 1 ! 0 2 " - ! 2 " ! , ! > ! 0 . Æ 0 & 5# ) 8 1 ! 0 # 0 ' 0 8 , H 2 13 Q0 0 ! " . Æ 0 A
> - 0 . > = ! 0
/ + ! 0
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"/
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- B & " " / . " " 2 !
+
"
. Æ & Æ - 0 " "
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- 0 " 0 & '5 78
1 0
" ! B: " 5 " 0
5) 8 &
# 8 1 A
& 0 & 0 & 5 * 8
/ - " # > 4 B: A
. " "
! 5G " " =& / )* 78 "
+ Æ " ! " ! 4 " & 1A 0 - / )* 78 0
. - "
/ a)
2.32
0.77
0.72
+
3
}
1+
0.137 MeV
7
Be+p
2+
8
2m0c
2
.
B
T1/2=0.77s
+
16.63
2
β
+
3.04 MeV
+
2
Γ=1.5MeV
-17.979
- 0.09
4
4
He+ He
8
Be
b)
7
Be
0.48
γ
7
I , T1/2=53.3j
EC
10%
EC
90%
Li
" #%:&
. 5 2 0 1 0 I - . 0 &
2 0 . 0
" Y - . 0 " . ! ! B
" ;5) 8 2 2 0 " =& 1 Æ & . . 0 - 55 . " - 0 2 Ex (MeV)
17.64
17.25 MeV
7
1
γ0
Li+p
γ1
2+
3.04
Γ=1.5MeV
0
- 0.09
He+4He
+
8
Be
4
I , +
? " #%:&
! &
B 0 "
- !
/ 1 / A # " ! & =& 0 Detection des α
Irradiation de la cible
1.54 s
0.24 s
1.34 s
Irradiation
0.21 s
1.54 s
Detection
0.24 s
I 5 %
& " I
)
t(s)
1.34 s
Æ ;
0 & 2 " Z 0 &
3 3 / 0 0 0Æ 6
- 0 !& 0 - "
2 . . 0 - - B 0 & 2 " - . 02 0 - " " " " Æ 0 - " - Æ 0 & - .
0 & - .
"
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0 &S ! G - . " 0 ' 0 - 0 " #
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0 A
0
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"
& 0Æ A
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! " " > . 0
! !. LM 1 0 2 " 6 ! 04+3 F / ( . 1 0 & 4 0 ! / ! " 0 . (3F 1 > ! & !. & B 2 " 0 ! & B " & & - " = " > . 0 0 - 3 . 0 & . !. = .
O .
- / B . Æ 55 0 B
* ,
- .
5* &S "
0 - A & 0/ / - 1 & 0 " & . " & 0 0 G
3 . - =
0 Æ !& . 0 - 0 " & ! . 4
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1
/ & ! ) & 0 !A
& . .
. 0 ! " 0 " & & B )* 78 "
& )5G
& # & " 5#G L)5M 0Æ H
1 3 1 B & . . , 0Æ " - 0 & 0 . 2 & 0 & 78 )5* 78 . 0 " 2 - " 0 " '
> . 0 5 > - .
#" " - !A
& "
2 - . 0 - B ! 0 / . &B
. ! ! 5G & 0 !& 0 1
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60
50
40
30
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2
3
4
5
6
7
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0 & S . & 8 / . - . 0Æ 0 &
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I
;
0
/ 0 - # ' > . 0
/ > = # '
$
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0 " 0 - - J " I
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. 0 " " ! " . . " 1 / ! . " 0 5 + 0 " " 0 0 " . " - 5)G @ && 0" 0 . .
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" Æ " E" E & 0 > & .
1 > A
0 - #)* 8 0 % . " 0 - & 1 " E E 0 A
0 & , > 0 - 0 % &
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& )5 78 N 2 & =& $
% % " 0 . " Z O 0 & 5' # 8 " & ! 1 & & 0 . I
;
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0 " *
0 " " - B & 0 & 5' # 8
, 0
+ - - " 2 )' ! = 0 ,0
2 " - # % - < 0 O & 5' 8 " - B 70
70
Coups
Coups
@ > & . " - , - )' ! ! "
=& 5
60
60
50
50
46.66 h
40
30
30
20
20
10
10
0
0
1
2
3
4
0
5
Energie (MeV)
5I , 232 h
40
6
0
1
2
3
4
5
Energie (MeV)
7 )D ;%; " - /
" / ;G " 5** ! - & 0 & 5' # 8 - G & ##5 78 0 G & 1 Z 5' # 8
@ " B - - "
- ! 2 " - 2 0 " & 0 B . . 1 =& 2 0 "
5) 8 & F Æ 5 5 - & . . 0 & - +
! 55 5*) " +
0.975
Ed=0.77 MeV
-0.192 MeV
7
Li+d-p
1
2
8
+
+
16.63
2
3.04 MeV
Γ=1.5MeV
2
+
0
+
Li
β
-
8
Be
I , - 0.09 MeV
4
4
He+ He
? "? #%:& ? ?P . P . 7 7 ? )5
2 & 5 ! 5' 8 # 8 . - ! - B - = " - 5G & % 1 & 0 5 * 8
. 5' 8 # 8 & ! & + - - " ! , " > "
" ? L)M " 0 & 0 > 2 " - 0 &
& & V ? 1
& " 0 & "
- - B 0 0 & - 2 & . > =& & & V . )
Coups
Coups
Ecm=0.878 MeV
60
40
40
20
20
0
0
2
Ecm=1.395 MeV
60
0
4
0
2
Ecm=0.448 MeV
60
Eα(MeV)
Coups
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Eα(MeV)
40
20
20
0
2
Ecm=1.092 MeV
60
40
0
0
4
0
2
Ecm=0.350 MeV
40
4
Eα(MeV)
Coups
Coups
Eα(MeV)
50
4
40
Ecm=0.491 MeV
30
30
20
20
10
10
0
0
2
0
4
Eα(MeV)
0
2
4
Eα(MeV)
I , " ? 6 <= < )
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B " - - L)M
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555
5#*5
5)*5
, & 78
5
55
5
55
5
5
)5
5
#5
" &
5)
#
5'
5*
5*
5#
*
)#
5
I '6 <= 6
>6 #);& ? < ! & . " " ! . - L)M 0 & && & - 0
1 " > " > 0 & & & " " 5
" & & 0 5
78 0 & ! 0 - B 0 F " =& . 0 > - - " 0
- 5G " " ;5# 55
)
Coups
Coups
70
Ecm=0.878 MeV
60
70
50
50
40
40
30
30
20
20
10
10
0
0
2
0
4
Ecm=1.395 MeV
60
0
2
4
Eα(MeV)
Eα(MeV)
I , " ? 6 <= & 8
555
'55
#5
5#)
5)55
5#*5
5)*5
I , & 78
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
55
5
5**
5#
55
5
5*'
5
5
5#
5*
5
5*
> & & ? " 0 & && & ))
"
$ A " & ! . & I
;
30
COUNTS
COUNTS
@ 0 "
" & ' # " =& )
& 0 ' " =& & 5' 8 . # 8 . - & 0 & 1 0 5 ' 55 #
, - & & ;'55
Ecm=0.878 MeV
25
100µm (1995)
20
70
Ecm=0.878 MeV
60
30µm (1996)
50
40
15
30
10
20
5
0
10
1
1.5
2
2.5
0
3
Eα(MeV)
1
2
3
Eα(MeV)
)I 5 " < 1!:! ( C 9 D ? 4 6 $
( +"
6 . 0 & & 0 & ! & " " 0 )#
0
/ E! & E " = / / - ! 0 . . 0 / ! & 0 0 ! & & & = / / 0 A
& 2 ! C ; K
J
& $ / 2 " " = . - & & 0 " 0 " I
;
K K " 0
C C ! & "
" ! & / & 5 "
Rapport des charges
)
" C C & ! =& # . #G
1.1
1.075
1.05
1.025
1
0.975
0.95
0.925
0.9
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Numéro de la mesure
#I 3 ;) " " - A
& G ! . & 0 " ! 0 > - 0 - G 0 . 0 2 - )'
0
/ ) 0 ! . ! . 0 " "
I
5!55
; 5!*
. = . 0 ! & & #G 1 " 0
" & $ /
$$
" - !
0 & 2 " 0 & - 0 " 0 & - " ! 0 " ; S7 7 & 0 1 2 = 0 " & $ F
% < & )5)' * 78 '' * 78 / 3 4 H )5G
Coups
C
0 A / . 2 6 ! - 6< & +4P
2 , " ! 0
/ =& ' *
6000
5000
4000
3000
2000
1000
0
200
300
400
500
600
700
800
Canal
'I B 3, 6 )
6 Coups
140
16
O(p1)
120
100
12
80
C
60
40
16
O(p0)
9
20
0
Be
0
100
200
300
400
500
600
700
800
Canal
I , 6 "
6 Coups
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
0
200
400
600
800
1000
Canal
*I , A 6 @AB
0 & 78 6< 0
/ 2 & V - A! 6< " "
)*
B . / Æ L))M 0 *55 78 I
V ;
V
K !
0 & @ V & B
- )
#
! . & ! +4P / & 1 F - " 2 Æ 2 1 1 F F 0 & ;'5 78 " " I # S S S " & #5Æ L)M % ! . 0Æ " 0 % ! & "/ " .
1 F " 0 0
/ +4P .
0 .
& =A
" . $ 1 0 X " =
Æ - !. " / @ & /& & B 0 0 / P
<
- B 0 0/& " ! " A
. 0 78 " 0 0 & *55 78
!
)
V "
78
5)
*
A
#
V #
78
A
5
V 78
5
55
A
5
+4P
V"
78
*
A
A
A
6<
V
78
#
5
5
5
I '6 7 6 " @AB 3,
? < / C )
!11 / C
, 2 "
- 0 ) 0 F . " 0 1 1 B B - ". /- & O . 3 0 .
- . !& Æ B: /
6< 0 & = " Æ 0 & 2 " 4 " 0 6< 0 &
" 1 F 1 % 0 6< *55 78 0 V " & . Æ " & 0 & B V V ;
> $
"
*55 " $
V $ *55
$
/ ; V #$ %
" 3 '
0 & 2 " ! . & " Æ A
V . . " 2 & A 1 !/ ! - " L)#M
0" 0 0" Æ I
; V K V K KL
M
Æ 0 & Æ 0 & AV % 0 & 2 "
" 0 & &
" ; & K &
% % "
/
#5
> *
$.
% /
- . 0 - 0 Æ - 0 !& 4 ! 0 0
1' , ! 0 - 0Æ - . 1 0 # 0 . ) -/
2
+ 0 0 - " .
0 " %5 - < - 0 !& O 0 - 6 I
' %
&
;
&
& &-3/ 4
3 " 0 " %5 0 > & ; &5
- 5
2 0 " 2 0 N
& . " " 0 " . 0 > - =& #
Activité (mCi)
35
30
25
20
15
10
0
10
20
30
40
50
60
70
80
temps t (j)
C <
6 ? 6
<= 7
I
0
> ;5) " . 0 0/ 0 " 0 - 0 " . 0 " A " 0 " 0 " 0 > %5;'5# 1 C
" " N;#5' > . - " " L)5M . #55 >
50
5 4
3 " - 0 & ! & B
- / & " & ! " 0
0 ! & . - = B
! B <;5)55 2 0 2 4
@ ! & ! "
0 " - =& 5 0 " ! . 5# 5# " . . & 0 !& & - " > . 0 5G N - 5G 0 - 0
" . " - 0 - 0 !& 6 #
19
18
17
16
15
14
13
12
11
10
9
6
7
8
9
10
11
12
5I 5 13
14
15
16
Premier scan gamma 96
6 4 " DE / & O 0 - 0 " - ' #%($( )
; ' #%($( < < " - 0 - - - 0 !& ! . < A
. Æ - . - ! . - 2 & B " & & !. = ! . . "/ - F - 0 - F
> = 0 & ! 0 & 0 1 & - 6 ! . #
1 ! - B: O
- & - "
! . - / &
- 1 0
B 0 & " 0 = > " . - 0 !& ! . )
& 8
6
555
#5
'55
5#)
5)55
555
555
5#*5
5)*5
5
5
5
5
55
5)
5)
55
55
)I < 11 +Æ 0Æ / 0 % . B " B 0 - + 02 0Æ 0 " - " > 1 2
" && I 0 G . " 0 - / 2 Æ 55G
" 1 ' + ! R "
&! LM A
3 5 #)
. 0 " B - B
. F
> . A
B . " ! " =& & 3 " *55 78 1
Æ 0 & ) L*M
0 0Æ 3 ( ( ( *(
; 3 Z ( - 0 & 5' 8 1 . - 0 3 60 - 0 !& Æ 0 & 5' 8
1
& K (5
3 5 3 ( 5 0
( ; 5
- ( ( 5 *(
5 ;
& "
)
3 " 2 0 " 0
/ 0 - "
& 0 > & " C
Z ( " . B . & ! ) I > - ? L)M "
=& - 0 & - . 5# 8 & . ##
NOMBRE DE COUPS
6000
5000
4000
3000
2000
1000
0
0
1
2
3
4
5
6
Eα (MeV)
I , ? " ? ? 6 <= 6 >6 ? 4 2 ! &
=& - A& @
> . 0 0/ " . 0 ;5 0 = 0 % " 3 - 0 !A
& 60 . & ! )# .
- )
" 3 5 # 2 -A
- " /
# " 3 5 ( ! " ! )
*
/ I ) * ; !55!5* 0 #G Æ 1 A
0 0 ! 0! ! " & ! ) < =& # 2 #'
(N7Be(0)xε)7li/(N7Bexε)7Be
Yα/Nd (u.a)
140
120
100
80
1.5
1.4
1.3
1.2
1.1
1
60
0.9
40
0.8
0.7
20
0
0.6
0
0.2
0.4
0.6
0.8
0.5
1
0
20
40
-λt
1-e
60
80
temps (j)
I "C 6
? " ? 7 6" 3 - 1" " ( ? 6 < < "
Æ "
;
" 0 ) I
, ( -+
) ..¼ #
0 B 3 5 ! "
0 !& . - 6 60 . " - # " B & ! 0 " 0 !& 0 - 0 . " - . . . 6S60 0 & ! !)!#!
$0
.
0 " " ! "
Æ - ! #
" - "
I
&¼ ' ;
&¼ &¼ &¼ '
'0 0 - -
"
" =& 1 A 4 & B . " N
8 #)
- 5)
)
)
- 5
#I ' < $1
2
7 < % . 0 " > & 0 D! E
" / . " & 3 " A
+ ! . 0 Æ 0 & I
- ; K
K
K
K
K
+ 0 - !/. 0 & - & / 0 I . A
E "E 0 AA . " 0 0
. ! . D/ . E
. " B - J + - 0 !A
& " & " ! . - & #*
0 0Æ .
D/ . E 1 " D "E D/ . E 0 ! ! & / 0 B:
! ) 0 0 " < 5
1 + # , - 0 2 .
" " " I
K + ;
K
K
K + " Z ; - ; + " 0 && C
0 - & " 5 78 0 & & & ! ) 3 " - " 5G G 0 - L)M . ##G & ; #5 78 'G
0 & * 78
1 + )
1 . ! &
" 2 !
& ! ) #G 1 .
" "
& $ / & " & ! )
1 + 2
+ 0 - 0 !& " - " 0 - > & ! # ! . B " " " 6 , " B " 0
. 0 " - . / . ;#G
" # - A
" 0 " - ! . " . 0 - " & ! )#
1 + ) 0 & 0 0 " ;5 - #
I
&5 , + ; K
&5
-, +
0 0 " -%% 0 > - " 0 " G <& . 2 ! 0 G . 0 0Æ H )* 78 0 . & " . "
& & 0 ' . " 0 0 & 3 && 0 5G 0 - L)5M
C
0 - - 0 & & . . )G & 1 + Æ 0 2 " 2 " & ! )# G $1 + 0 - - 0 " 5#G . && "
" 2 0
B
1 " 0 & D/ . E
1 + 6 *
0 0 & 2 " 0 0 & " .
0 - !/. < Æ " - ! 0 - !/. 0 I
;
/
K /
/ K
'5
/ ;X X S 0 & H W = 0 / && 0 0 & 2 " 0 & - 0 & B 0 0 0 & - & 0 )) - 5G 78 8 0 0 & 0 0" 1 1 Æ 0Æ . . B! 2 .
" #G . #G = 0 0 " 5G " 6<
" " ' 0 & 2 " % & % 7$ 7
@ 2 " 0 2 ' - # ' , . E "E E/ . E
= & ! )
F " .
0 ' Æ & B 0 " ! .
&
# 0 " & #
!& 9: . '
F "
& ! "
. ! " 2 B & = .
0 . " 0B 4 B . = " & - !/. " & ! )
'
4 1 & 1
) + . # < - ' Æ % " # 4 !& 9: '
G
5) 78 '5 78 1
78 #5 78 1
) 78 )55 78 1
#G 5G ' 5G *
'G A ##G
)G
G
G
#G
)
#
G
5 78 ) 781 #G
)G A #G
)G
#G
'G
)G
'I 5
< D 9 6 " E F F 6 6" F F
$3
4 % " ! Æ A
" & 2 < =& 2 " Æ - 0 & 2 " & ! - 0Æ B G ! , 2 ' .
# & 0 &
5#5 8 ) 8 1 F " Æ .
0 & 0 0 - !/. < > ! I
; 1 A ) - 0 ! A
- & Æ =& - 0 & 2 " !/. '
Section efficace (nb)
1000
900
800
700
600
500
400
300
nos résultats (96)
nos résultats (95)
200
100
90
80
70
60
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Ecm (MeV)
I , Æ $ D $ 9 7
S (eV-b)
7 6 < P ? 50
nos données (96)
nos données (95)
45
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Ec.m. (MeV)
)I " 6 ? E '
@ 0 .
A
2 2 0 & ;5**5 8 N 0 ' . . 0 " A
- 2 0
0 # " 2 @ .
& - " ; B " & # ' 2 ;5) 8 N - = 0 " " . F . . 0 " 2 5# 8 5*# 8 O Æ " & Q ; 0 & 0 ;5 8 ;5'' 8 1 0 " 0
/ 0 - " A
" < & ;5)5
8 ;5**5 8 G G " " - L'M " - & 1 - L'M =& )
, 2 & 0 &
I . .
A
- !/. 0 & . = B ! ) Æ 0 A
O " Æ B
% * @ " . =& # - L'M
')
"
! S (eV-b)
50
Nos données (96)
Nos données (95)
Filippone et al.
Kavanagh et al.
Vaughn et al.
Parker et al.
45
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Ec.m. (MeV)
#I 5 7 " #;D& C #%1& 2 #; & / #;!& ? E F " . 8 &! L5M + 7 L*M
" $ L'M B " R " &! LM @ - " 0 & ! "
0
! . > . 0
! @ Æ 2 ? L)'M
" " Æ 2 0 B . 0 AA ! '#
& N ;5*) " . . X " Æ B %"
. Æ "
& .
0 & 1 " . 0 / ! 2 / 0! 1 . & Æ ? - . . B ! 2 ! " / 0
. Æ /
X " X;* 4 . 0 " && " Æ .
- + ) + 3 " 2 .
" 2 & B A
& + " " " N64 N64 J X& L)M
0 . " " / . " 2 &
0 / . 0
- " 0 &
& 2 4 . 2 ! - 0 @ " 2 " N64 0 . & B " 0 1 ! 0 & - 2 ! * - 0 &
2 " - ''
3Æ )
#
'
*
5
I '
8
3 G '
5*
5
)
5))'
5'5
5#5
5*)
5*)
5)
5
*#
'5
#'
5
5
5#
5#
55
55
D < 3
)
" 8
3 G #
5*
5)
)#
)
)5
5
'[email protected](
*I @ 6 ;: 9
1 0 . " Æ ! 0
/ 0 . - !/. I
; 00 G
)
; 00 G
1 " . =& '
- & 0 ' . B 1 0" B . " B 2 1 . ! B
- " - &
O . ! < . " '
55\
& '55 \
& !& " -
& 0
/ 8 , H 2 0 F . . - 0 # . ' B & # . ' 1 " . 2 2 ! - S(eV-b)
$ " & . " " 0 =& ' " &
50
Données (96+95) avant correction
45
Données (96+95) après correction
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
ECM (MeV)
'I 5
<
" - !
2 B & " I - ;5# .
5** 8
* 0 . A
. 0 0 02 " "
& ! )# ! % 02
0! "
. 0 - 0 0! & 3 " '*
- B . 0 A
Æ " ! 3 6 . . " 0 0 & - & ( 3 " " N64 - / 2 ( G I
( G ;
!
( ( .
(
(
#$ %
.
-( ( ( ;
(
( " Æ 2 - L)M
< > " 2 ( " N64 . 2 " & ! )#
3 )
#
I '
( G
#
#
)5
)5
? F " . " - B
. ! 3 " . " 3 5 . 2 " & ! )# !
" " A 2 . #G / 3 5 ! ! I
) * ; !5''5!5*
5555* ) * ! 3 5 B 02 2 4 . " Æ 02 2 - . . 0 " " & '
02 0! ! B: " 1 B A
& B . " 2 " " A
2 " N64 < 0 . 02 0 . 0 2 . 0 = . 0 " - L)'M L)*M
.
- - 02 2 2 - 0A
" 2 . 0 - Æ 0" " 02 2 ! N - 0 /
. . !/ ! . A
" & 2 8 1 93:
0 8 &! )55&S 0
- 5 . ' 3 " . B S . B 0 )'G 0 F *G 1 *G 1 *G K + - 2 ! " && 5G . . 0 & 3 " > - > . 0 B *G B . & 02 2 " && G
1 . 0 & = " B . 8 &! & (; 1 9<:
B . 8 &! . .
2 " 0 78 0 & ))5 78
+ " > .
" - - J > "
78 0 & ))5 78 ,0 2 " G *#G .
-
5
C
/ 2 A G & / & 2 $ > G " - - Æ +
;
00G
(
00 G
*#G
5 . Æ 'G
1 0 0 + 7 L*M
B 78 0 ))5 78 " ! > 0 @ B 2 B! < . 0 - J
0 ' 78 > %" - 2 > 0 - > - F & 2 " =& - L*M
/ " > 0
B
N . . Æ + 7 .
B " B G 1 0!/ ! " B - "
B: & . 0 " B 0 5G
=* 1 97:
02 2 ! Æ 0 0 - 3 2 " 2 !/ ! . 0
- . 0 " B . '5 0 A
A '* 78 8 1 & 0 . " 0 # !/ ! . 0 B B . # 'G 0 F *5G K ))G 1 #G 1 %"
- 2 ! 0 " N64 / 5#G C
- 2 A " 0 & && - & - & & "
" 2 - 0 & A
- - - . 10
"
fcorr
N8Bperdus(%)
' . a)
9
1
=& b)
0.98
8
7
0.96
6
0.94
5
4
0.92
3
2
0.9
1
0
0
0.5
1
1.5
Ec.m. (MeV)
I " C 7 7 B
0.88
0
0.5
1
1.5
Ec.m. (MeV)
7 < ( C 6" C 7 7 ! 1 9$:
, 0 $ 0 . 0 " ' &S G F 0/ & "
X / - 5 3 " - . $ " B . ' 1 " Æ / 3 ! " - 2 ! . 0 . Æ A
=& * - 0 & 2 "
C
G - - . ' . . 0 . Æ Æ =& *
1 02 2 " Æ 0
& ( B) fcorr
1.05
fcorr
2 & = - !/. 'G G & 0 & A '55
78 - G & A *55 78 4 ) * . 55 ) * 5'5 - " a)
8
1.04
b)
0.98
1.03
0.96
1.02
1.01
0.94
1
0.92
0.99
0.98
0.9
0.97
0.96
1
0
0.5
1
1.5
0.88
0
0.5
1
Ec.m. (MeV)
1.5
Ec.m. (MeV)
*I "C 7 7 <
Æ ? 7 < 6" C 7 7 < Æ ? " ? 7 < 7 % 6
, 6
2 !/ ! A
" . 0 "
. 02 2 . " & B
N64 "
=& N - & . !/ ! . - " . . B S(eV-b)
50
nos données (96)
nos données (95)
Filippone et al.(83)
Kavanagh(69)
Vaughn et al.(70)
Parker(68)
45
40
35
30
25
20
15
10
5
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Ec.m. (MeV)
I 5 ?
<
F . =& . R " &! LM A #55 78 . "
" B $ ! . . . 2 B " ! 2 . 0 " 6 . > . 0 0
)
, ! > 0 . & A )5 78 Q - > ! 0
/
3 " "
! . Æ B:
.
0 & "
- 55 78 5 $ A 55 78 " B A
- . ! . &
B - ! & " . 0 " - +
- & = " " !
- 9: & I 1 9: - 0 & &
1 ! . &
+ 0Æ " = " I
A 9: 2 9: ! - A
! N 9: H B - ! & . " 0 "
& & ! " . " 0 & " @ Æ 9: B - ,0
Æ &
. 0
- #
& " ! A
- #5 % & . " 51
+
0 " 9: E<F3FE
" 04+3 0F / L#5M 3 0 " 0 A
!/. E+%+%+E 1<3< 0F / J / 0 1 )5 78 . " - "
> . 0 % L#M
C
& . 9: & B 2 0 163 H%3N L#M Æ - @ ! . > 9: =& x
z
y
I , 6 < 0BG-'
7
,J?B-J = <
Q H%3N . '
&
Bz (Teslas)
" & L#M 4 " > ! & . 9: . / " 0 ! & . <F3F - H%3N 0 + L#)M @ ! 0 <F3F =& 3.5
r=0
3
2.5
2
1.5
Centre de Soleno
1
0.5
-40
-30
-20
-10
0
10
20
30
40
Z (Axe de Soleno) (cm)
I ,J?B-J ( 0 - 0 ! A
02 2 , " ! & . 0
" =& B! 2 " F
& A
- ! 5) 8 & 0" & " ! ! I )' 8 " =& A
& O 1 9: " " 5)
8 B . & " H%3N . B - " " . " ! ! I
!
! A A
/
0 > " =& Coups
, 9: " "
. "
1 . - 100
90
β du B
80
e -e (γ1 de 14.6 MeV)
+
-
8
+
70
60
50
40
30
20
10
0
0
2
4
6
8
10
12
14
16
Eβ MeV
I 5 " 6 0BG-'
$)D ( C C
- " & " "
. - " - & "
1
! ! & . 2 - &
2 . " 0 " 0 0
> - "
0 " "
" 2 & "
+ " 9: " .
1 0 0
- & " "
Æ & 78 0Æ *
" " * " & . 0 ! & <
" 5 1 . " 0 0 B . & ! 3 " 2 B
/ / 6< +4P . ! + - " B . = " - 0 2 !. . 2 0 0" .
0 - " #
" # < & - +%+%+ " " . " =& ) I
A H & 5** 5 - & . A 0 & - & " ! . . " " - ! & " ! O A
" " "
# 1
! & - H - " " - / 0 +
" ! & ! " . F . =& ) . & )Æ ! O " 0B! !/ & 0 " - * F " & 2 78 B
"
B B &B
Æ " 0 & 3 " " & O I
A @ & .
" - " ! I 0 0 0
<F3F . /& . <F3F & A ! - 9:
A @ & O & " " "
! "
0 <F3F 1 & . " & - &
> . 0 <F3F " =& '
" 0 /. 5 & ) 5 ! @ / " " "
1 / "
. - . . " & B! 0! - = 0" B
& O "
0 <F3F " " " - . & O &
5> +)> - /
<F3F 9: - = - 0! . 0 A
- / . - ! / * & #5 @ . ! & . / / . 0 0 + <F3F & " 04+3 0F /
" ! $ 9:J %O B:O L##M ! . 0 A
" N
# % , " '5% . ! 5) N
- & & . / ; 0 12 & ) 8 A . " B ! <F3F "
#G
, ! 5) N ! " 0 & ' 8 & 5 8
3 . & & <F3F ! - && 4 - & &
" A . ! " & ! "
*5
)I C < GG *
,J?B-J
0 ? / . A - 2 = - J & > B =&
" B Æ 0 & - 0 / " " I
- > 0 <F3F " - ! & . I " & 0 & <F3F =& #
#I '= 7 0BG-'
,J?B-J " . 0 & 0
0 "
& - . "
. 0 & 0 - 9: "
" & "
, - B - 5# 0 & 0 - 0 #5 % A ! 0 - ! 2 & B > "
*
N . 0 ] "
0 - 0 N 0
<F3F " B & B / " "
<F3F
! & . + " - " 2 & 2 2 " ! =& + ! " = . /
35% " - )* 78 < H%3N " - / . 0 - = & / )* 78 "
& Æ & " * * * 5 4 0
0
@ " 3 " &
3 3 L#'M
, > " & #55 78 ! 0 % 0 & . 0 !& ! <F3F N ) N )5 " =& 0 2 0Æ . ! & <F3F =& ' ! " 0 - 0 5# 0 1 ! ! . . 0Æ &
, ! " & " & #5 4
0
& 5 & "
0 " - B .
O
1 & ! + / P+* 1 #5 <F3F / . # 0 A "
2 ! - 9: & & - B .
O 0 & + 0
& . N / K& K+ 0 ! <F3F AB 0 / . & + 0 = 0
" *
9: . @ - . )* 78 0 2 ! . 1 + 02 " #55 %" B ! A > 0 & " ,0
" . 0
55
0 0 - && . !
55 0 - . . - . - " ! " <F3F " I =&
0 0!/ & 2 & O ) - " )# 5 0 55
4 - 1 4 - ! & ) & 5 0 . - - ' < - "
* - 0
5 / / 0 " =& ' 1 . " H%3N
B! 2 " . 0 A 0Æ - & 0 !& ! ? " 55 0 - 0 &
. 5# 0 . ! . 0 A
A . . & > & 0 0 /. " *)
! @ Æ & - ! N "
. / A O I Æ - 9: 0 & . - 0 & . <F3F
3 " J
/ . - - & - 1 / 0 . " = . @ . " 0 <F3F ! & " - 0
" "
- A + & & = 0 - & 0 H / A
<F3F & & ! & . ! O " - - " ! & "
0 <F3F 0 &
I '5 5 78 @ & A . . <F3F =& '
'I C < *#
,J?B-J
0 #
A A A A A - & 0 " I
= !
= ! " - 0 & " 9: " 2 + - " ! B: " > A . @ !
! B: =& + # -* @ 1/
) " & " = = " &. . ! ' " & 1 1% %1 - . " . 1<3< = = A
! <F3F &
= "/ " = " - - 1% %1 & & " 9: - " & N,1 !
E E " E E &
"
+ # -* @ 1/
! . ! + "/ 0 B
" " 0 " &. & 1% %1 " =A
0
" - ! "
F 1$*555 " = & & 55 78
" 0 & '55 78
&
" "/ " N,1 *
" ! E E " &
! " 1 N,1 " ! " " ! & . ! " 0" *'
det 1
α
det 24
Pre-
Amplis
Ampli
rapides
FCC
1
FCC
2
OU α
CADC1
α
Amplis
lents
CADC2
α +β
Start
TDC
αβ
Stop 1
Stop 6
Amplis
lents
β
PM 1
PM 6
PreAmpli
OU β
Amplis
rapides
CF8000
Start TDC
Stop 1
β
Stop 6
I , HI < %& - AB * # /
+ & 2 &
&. & ! B: . ! = " " - / 9: " &. 1%4 04+3 0F /
L#M ! / 2 & E E " & " &
&. =
0 - "/ 1%4
- A ! % ! / 1%4 0 > 0" E9: E A E E E E - " . 0 = A
*
& % "
0 & & 0" .
- "
" 0 & & B " 0 - 55 555 @ / ! & " E E E2E ! . A .
A J B - J . 0 O &
&. - - . 0 "
" + & 0 0 B ! B: " 1%4 0
! &
& # "
. " " - & / 8 0
0 / - . @34P 0 0
! " " . / - 7 8 & 5) C
/ . - 0
/ " " 8 & B . & - <@3 A
& F%<4< 4+3 F / L#*M " & " = 0 ' ! & + . - 0 . 0 - 0! 0
. A 0 - . " 1 & ! & . <F3F . & ! & . B! 0 & & . . 08 0 0 " 0 ! - 0 I
& 55 8 / ) 5 N B / AB + > - " 55 8 0 & 55 8 0 & ! 0 <F3F ! . 55 8 < 02 ! "/
**
" I 2 & 0 !
. A 0 0 " 02 ! . , 0 ! & " = ! & ! $
& . Æ ! & % + " ) ( ! & / "
I
3 " & 0 " Æ 0 & 78 & B
- & & 0 0 - = )' 0Æ 1
! Æ I
;
)
1 - 0" " )) & 78 3 " Æ & '5 78 5 78 Æ 78 - & "
& 9: " , 0 2 ! & & - 2 3 " - "
. 0 Æ L#M " "
2 & '5 5 78 B: " Æ 78 0 B
> - . - / . +
. " / 0 - . 2 " & = " 5 78 0 & 0 B 1 " = / "
0 2 ! 0 0 !& *
$
5 & - & " / " 0 > & 2 & B A
" " =& * & " 0 - " - " 0
- ! & . <F3F 0 & . " H%3N & 0 A
2 % 0
> " =& 0 & & ! . ! . & Coups
> & 0 & " " - J & )5 78 700
Ep=217 keV
600
500
9
6
2.5
3
Be(p,α) Li
9
Be(p,d)8Be
α
d
400
6
300
Li
200
100
0
0
0.5
1
1.5
2
3.5
4
Eα MeV
*I , ? " ?
" < 6 ?< < 6 < 5
E (MeV)
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
100
200
300
400
500
600
700
800
Canal
I B $
6 < 1 67
1+ ;8
+ 78 " ! - "
" . 0 . ! 0 " - . - " ,
2 " - - "
% A ' 8 . % & " - " =& 5
"
! A / )* 78 + - = - " ! & . 5) N <F3F - - - B 0 - 0 . 78 4 =& 5 B . 0 > ! - A ' 8 ! & 10 . & " - "
@ - " - " & 2 " = 0Æ & - 0 !/ & " - Coups
120
100
80
60
40
20
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Energie (MeV)
5I , 6 7 < ;$: / C ? 6 <= 6 $D ( C
Coups
2 0 & 78 "
- =& 6 . 0 - . 0 . 0
- 80
Ep=217 keV
70
60
50
40
30
20
10
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Eα MeV
I , 6
"
" 7 " 6 7
18
Coups
Coups
1 - 0 && & " " = . 0
B: 3 " 9: " 9: " - 0 " 1 =& @ - O > 9: " ! =& 0 = ;
5# " & & O - O ! E= E 0 / - 9: ! 9: E= E - 9: Spectre α coincidence
Ep=217 keV
16
14
80
Spectre α direct
70
Ep=217 keV
60
12
50
10
40
8
30
6
4
20
2
10
0
0
1
2
3
4
5
Eα (MeV)
0
0
1
2
3
4
5
Eα(MeV)
I " , QI 6" , ? 6 E <= 7 N QI 6 - ! 0 . "
0 78 0" Z - - 8 ' 8 3 0 " " A 0 8 . - & 0 > . 0 & " =& ! & ! ' 8 A " O - " ! & ! & 1 " 0 - 1 & ' 8
0 &
0 . 0!
0 G
0 &
& / 1 - 3 0 " & '5 5 78 B
- "
& S - " 1 +Æ , - . " Æ 0Æ " B B & 0 & 2 0Æ - 0 & " 0 & - & & . /
& 0Æ 0 ! & 3 = 0 Æ & 0 10 0Æ . " 0
/ 9: 0 . - =& , 0
/ =& "
8 . 0 A
& ' 8 - - "
; 1 - &
9: O 0 B 8A' 8 9: " " ;5#55# & 0 & 8 ' 8 6 + .
" B - "
<F3F & . Q0 . - B . " ! =& . )# 8
A . & "
9: " 4 0Æ / 9: 0" + " - . A
0" "
)5 8 I 2 A . 9: )
. 0 " & 78 B 1 G 0 - L'5M " H%3N . -A
= A )# 8 )5 8 B 0G 0Æ I
,
;
, 0 ¼
5!'*
500
a)
spectre β direct
450
400
350
Coups
coups
@ /. 9: =& F " . - && A 8 < =& ) 9: 100
70
bdf
60
250
50
200
40
150
30
100
20
50
10
0
spectre β coincidence
80
300
0
b)
90
5
10
0
15
Energie (MeV)
0
5
10
15
Energie(MeV)
I , = < ? " " 6 7 6 6 7 6"
QI #
Coups
350
300
250
200
150
100
50
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Eα(MeV)
)I , ? " QI N - B . 0Æ B: 2 0 B . 0 0 1 - 0 & & 2 0 & " 9:
# 78 " 0
" 0 & - 1 Q - & A . " / & "
1A
" H%3N > - - L'M I
^ L
;
^ -( K %- M
-( " 7; 1 C 0 & ;5) 8 0 & 0 & 0 ^ ^ " & 0 & C ' 8 8 - / ?& 0 & 8 & _;#
8 . 5) 8 LM
" - - 5 0Æ ¼ & I ; S5 '
¼
0Æ &
3 " & & A A A " B 0Æ " && 0 . " 0 . 0 & - 5'5 8 " " F . . B 0 - 02 = . A 0 - 0 & & & A $ " Æ & ; 55 & & / 5# 8 ' 8
" =& )
+ 0Æ & 0 & 5 ' 8 . 0
/ - . & - 3 " - & 0 & 9: @ & & " . A . & " & 5#* " " ;5# !
9: 78
$ & 0 & 5 ' 8 0Æ " & 5# 1 0 # , 0 0 0 - 2 & B 0 " & - - 0 !& 0 - & * 4
2 0 " . " 2 . & ! =& # B . 0
> 0 . 7
Activité du Be
Ajustement avec les 2 premiers points
160
1
140
120
2
100
80
60
3
40
20
0
4
0
10
20
30
40
50
60
70
80
temps t (j)
#I C
<
6 7 ? 6 $ ; % )
;$: / C $D1 / C $%1 / C
@ . 0 - . 0 ! & 0 & 0 1 & = 78 " & 0 I & 0 'G '5 78 0 5G 5 78 1 & ! . E &E S E &E
" S 0 & O L'M N " " "
- 0
B > ! 0 & - 1 > " - . 0 & - && " & 0 . 5Æ . ! & . " =& #
1 0 >
0 " " 78 O > 1
- *
- " " " Æ . ')
50 4
+ - " B - J . 0 ! & - . 5)55
B - . " 0 0 ! . 2 4
1 " - 0 !& / & - - " & ! )# ! 1 - J - 2 1 2 & B . . 0 " B
0 & & 0 - & B 0 & " % ! & - - . " 0 - - 0 !& 78 5**55*
1 &" 0
/ ! & - 0 2 " B
& . 0 3 " ! & 0 ! & 0 0
& $ / ! & .
- "
0
! & EF3E ! & EF$$E "
- G 1 G 0 ! ! & 1 - ,/
2 - ' ! 0 0 . - " )' 55) 78 " $1 5 Æ 0 " # ;8
@ - Æ 0 & " ;') / - " - - 3 " "
& ) 8 " 8 B
;# " " 0Æ 55
@ ) 8 02 - &
" - " . - 0 " > / 0 " " =& " Æ G 02 0! ! 1 " N64 "
B . ! +
" - !/. 0 & 2 " 1 . 0 & - 0 0 & - & 2 0 +%+%+ L#M & 55 55# 78
C
0 0 ! & " & ! )) 0
/ A
" 6< +4P 2 0 1 . # ' & " " 8 H 2 2 "
0 & '5 78 = 0 % 0 " 0 - / ' 78
78 0 & 2 " " & ) 78 B - ! . 0 & ! )) , - 0 & = *#* 78
- !/. I <*#*; ' 8A
3 . " 0 " 1 ;8
Æ 78 B / . ! " & ! )
" . ! &
0Æ 0 !& 0 - 1 + #
0 & ! ) I
A
K + ;
K
K + " Z ;
"
- ; + Z - & 0 & L5 8 A
55
' 8M - 0 G
. && 0 . 1 + )
0 > G
1 + 2
B . 0
"
" . 0 0 - 0 !& ! " & ! ) / >
"
0 0
" 6 0 G
1 + ) C 1 ! 0 " 0 - 0 - )G C
0 0 " 0Æ 0
& !/ *5G 0 & )' 78 1 Æ 0 ! & 0Æ " " " 0Æ " 3 1 B & . . 0 0Æ 0 & )'
78 0 " 0 = 'G
)G 0 1 + Æ 0 0Æ 2 " . 0 " . & ! ) 1 0 - " I
!
0Æ ,
, K + + ;
K
K
K
K
, , K + +
-+ + - +
- 0
0
+
. 9: A
" 0 ! " 0 & '5
- L'5M -00 0 - - 5
-. 0 .
78 A
- . " - 0 - . 0Æ & 0 & 0 A
0 - " 0
. 9: < & . " " " 0 3 . 0 - - 4 -+ + - + - 0
+ 0 -.
-.0
0
- -*
*
#G
5'G
'G L'5M
5
*G
5G
I @ < < Æ
5G 0Æ 0 " S 3 2 ! - J 0 01 + 0 - . 0 - 0 " G & 78
1 + @ Æ ;8
2 . Æ .
0
. 78
!
. "
0B & G 1 B 5
4 -+
+
-. .
-) ) -*
*
-,
,
-)
)
G
G
)G
G
G
G
I @ Æ ;$: / C
1 + 0 " # ;8
0" 0 - !/. 0 0 & 2 " Æ " - & ! ) ! 0 A
0 & - && " L#M C
0 0 & 0 'G 0 6< 2 "
0 1 5) 78 0 & 2 "
*#* 78 1 0 & - !/. 0 & 78 = G I < ;*#* 78;' 8A
$% " &
Æ '()* +, '(* +,
1 ! " 9: A
" Æ & '5 78 5 78 " . " 0B 78 3 J 9: "
! .
% 89
- " I
"
5
9: - 0
C
- !
- 0" @ " & & A " - B " "
5 AB - /
@ =& ' < =& /
2 " 1 E
E N,1 [email protected] " E E &
2 !/. " & Coups
" H%3N F / " & ! & . <F3F ! " =& * =& > " 50
45
Ep=217 keV
40
TOF(αβ1)
35
30
25
20
15
10
5
0
0
20
40
60
80
100
120
140
160
180
200
∆tαβ (ns)
'I , QI 5)
coups
800
700
600
500
400
300
200
100
0
0
0.05
I , 0.1
0.15
0.2
Temps de vol des α(s)
0.25
0.3
-6
x 10
0BG-'
y
z
x
*I C ,J?B-J
= 5#
B . =& . " 0 & 0 0 & " F / " 0 & A ) 8 & ! & . <F3F
-6
x 10
0.35
TOF (s)
TOF (s)
x 10
(a
0.3
-6
0.35
0.3
0.25
0.25
0.2
0.2
0.15
0.15
0.1
0.1
0.05
0.05
100
120
140
160
(b
180
0
Θemission
2
3
4
5
Eα MeV
I , 6 < 6" 7
1
" 7
. 0 .
& " ! & & . 0 " - 5# G
=& ' 0 0" 1 0 . A " - ! . 9: , - . 55
> - 1
" / . - 2 !/. 2 " 3 " 2 *) " =& '
%" " " &
9: " 2 & 1 A
" =& 5
+ 0 5 78 " =& 5 A 2 5 1 A
5'
Ep=217 keV
15
Coups
Coups
" / . . ! 4 0 & = " . 0 & 0 0 . O > 0 AA & . 50
Ep=217 keV
TOF(αβ1)
40
30
10
20
5
0
1
2
3
Ep=160 keV
15
0
4
5
Eα(MeV)
Coups
Coups
0
10
0
100
200
300
∆tαβ (ns)
50
Ep=160 keV
TOF(αβ1)
40
30
10
20
5
0
1
2
3
Ep=130 keV
15
0
4
5
Eα(MeV)
Coups
Coups
0
10
0
100
200
300
∆tαβ (ns)
50
Ep=130 keV
TOF(αβ1)
40
30
10
20
5
0
10
0
1
2
3
4
5
Eα(MeV)
0
5I , 0
100
200
300
∆tαβ (ns)
QI $ QI 5
.
: 67
Æ ! " 0; 67 ;
1 ' Æ '5 5 78 "
78 0 2 I
3 " 0 9: 0" "
! . & I
;
, A
" 0 & 2 " - .
, ;
Z , Z " " I
)
Æ , ; 3 )
3 , " A
Æ 0 0 0Æ 0Æ - 0 0 . - 0 & 3 .
? "
& 0 & Y 3 0 & . B
, ) - !/. Æ I
;
5*
#
"
;
3 ) , - !/. 5 78 78 I
;
" = . . ;
& '5 78
2 2
'
& " & 2 78 '5 78 5 78 &
2 ) 2 2 ) 2 2 3 2 2 , 3 2 , +
)
' = "
I
2 2 3 2 2 2 3 &
0 . Æ 0 . 0 0 0. 1 " 0 " = 0 . 0
" " B
" 1 !/ ! 0 B: & 2 " H%3N . 5
&
3F 2
2
& . <FA
&& 0Æ B 0 . - 02 2 . .
& Æ 02 & = - " " 0
!/ ! A ! . 0 0 - & I
) ; & ,
-
,
%-#
V / & 0 & 1
O ! - J
B
& 2 1 !/ ! " = = 2 0
/ / & 2 0 3 & " . " 0 2 0 !& " - 0 " 1 .
"
- . " 2 6 " - V 0
L#M - !/. < & 2 "
2 & / ? 1 6 # 2-+/ . 2-+2 / + " ! 9: & =& . 0 " 0 . =& *
-+ /
" - 0 , & 5 78 0 & & # " " & 5
5 -+ /
60
σ(mb)
S(E) (MeV-barn)
- !/. " X ! W L#M 1
Æ & 0 &
' 78 5 78 @
> 2 < & 2 "
@ X ! W Æ - !/. - 0 & 2 " =& & 0 & *5 )5 78 < " " . " a)
55
b)
50
10
45
40
35
1
30
25
20
100
150
200
250
10
energie lab(keV)
-1
100
150
200
250
energie lab(keV)
RS #9 & " ? 7 " Æ 6" 7
< 7 6 ? 6 = < 6
I
1 2
$ " .
"
A
" - !/. & '5 5 78
78
1
0 & 2 " & 78 )
78 " & ! " 0 > 1.25
1.225
rapport des S(E)
rapport des S(E)
X ! W - !/. & " ! - J 0" 0 0 & 2 " '5 5 78
2 I " . " & " - 3 " - !/. < & '5 #) 78
5 ) 78 Y '5 5 78 & AB Y #) )
78 - & 2 " . 0 '5 5 78 B . 78 0 " " 0 B & . - !/. & '5 5
78 - !/. ) 78 =& - 0 & 2 " S(E) 160 /S(E) 217
1.2
1.175
0.98
S(E) 130 /S(E) 217
0.96
0.94
0.92
1.15
1.125
0.9
1.1
0.88
1.075
0.86
1.05
150
155
160
165
120
Eeff lab(keV)
125
130
135
Eeff lab(keV)
I 3 7 B 8$D1 $%1 / C ;$: / C
" 1 =& . " < - 0 &
2 " - 0 " )G
& 1
& B " I
0 0 !& 0 - " )G & B . " & 2 " '5
5 78 - ! & - 1
)1 " 78 " Æ - L#M 3 " " '5 5 78 " )1 ; 55 5* " " )1 ;5*
5 78 0. ! " > ! 0 " & & )5G . ! !2 . 0 0 & 0 / & 0 - 3 " = " " 0 & 2 " & "
#)5 78 - !/. " 5 " =& $ I
<) 78; 8A
< 78;## 8A
& - 1 " & 02 0! ! . & G 0 . " 2 " N64 0" 0 & ! "
.
2 0; ; 67
! 0 & - !/. '5 5 78 0 " - " I
2
2 2
, , 2 2 2 4 2 ;
K
K
K
K
K
2
2 2
2
2 2 2
4 , , "
4 2 3 32 22 ;
K
K
K
K
K
K
4 2
3
32
22 "
" .
"
& 78 '5 78 5 78 A
"
I
A 0 - !/. - J
78 G . & ! ) 10
. " - J / . '5 5 78
A . 9: 78 ''G '5 78 '*G 5 78 )G A0 . & 78 '5 5 78 && A 0 " 5G 0 A
5G 0 - 2 & && A 0 & && & " 2 &
A = 0 - !/. 78 '5 5 78 @ B . . - !/. & 0 > X ! W L#M *5 78 )5
78 0 " G & @ = 2 L'M G G "
- !/. - L#M L'M & '5 5 78 3 " = " G -.' .'
) < =& > . ! & I - - !/. - 0 & - & E/ . E E "E
)
S (eV-b)
50
Données (98)
Données (96)
Données (95)
45
40
35
30
25
20
15
10
5
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Ec.m. (MeV)
I " 6 F
. =& . "
&
" ! & . A
.
0 = 0 2 0 . 0 & 2 "
- 2 ! . 2 / . 2 4 " . ! & ! " - J 0Æ #
! " , ! > 0 " 2 ! . & Q 2 &
- !/. Q - !/. 0 &
< 5 " ! . $ L'M 8 &! L5M
" - ./­ 0*
Æ " A
- !/. 0 & ;* 78 & . " ! 4 + " > A
. 0 0 & O 2 ! & ! . "
& , O 0 & . " A
I " ;
5' 8 " 0
;5 8 , " & " =& A
" I
A 0 " 0 " 0 0
/ 0 / A 0 / , O 0 & 2 L5A5#5*#A) 8M A
& Æ " - " B && & 0 & " - L'*M ÆA
" L')M I
'
" ;
' 4
3 5 K - K 6̀ 6̀%
25
76 K 8 3 9 :3 23
)
4 " / F 0 . ; " 0 4 ;" K5 8 0 & ! Q0 Q " 0
= 8 3 :3 25 - 0 "
"
0
- 2 K
N Æ " 0 "
- )
- 0 0
- - 0 "
2 K
6 . . 0
- ( ;5 8 - 0 8 3
& ! /
6 A - % & Æ 0 - 0 0
& / . - 0 1A &
0 & - ?! 7 " / . 1 I
8 3 ; < 32 ) % & 2 " - )
+ ! ! . 0 A
I / . 0 ! 6
! !
/ ! Q . ! ' " , " / L'' ' '* ' 5M
= / "
J
. ?A< 0 A " 0
- 0 / > = - . " 0
- " 0
- ! 0 . LM
- . L'M . 2 " / - > 0 & 0
- - N L''M 0 . . . 0 . 0 && I G 55 78 )*G 8
0 - L'#M + R L'M
R L'*M 7 L'M 3 L5M 3 02 - & " " " & - !/. 1 2
= " && , " ! . < 5 " L' '*M + 7 L'M . 0 = " - !/. "
- < - ' #
- 0 2 K 0
- - 0 * A
/ . /
(KK + Æ - " ! 6H & & ! R LM Q! LM 1 L')M 0
, " / L'#M ! & H1 R LM 0 . 0
- S =&
K I (KK 0 A - ( & W A3 & " ! . < 5 #) 8A
Q! LM - > . 0 )5 78 0 AA 0 & " . - " " S 0 " - " - 2 " ( & W A3 &
" < 5 " - !
" * 8A # 8A
, " , " / L'#M 0 =&
& " (KK S S K ( S #S S 2 " .
2 " 2 - 87" 8 8 8
8 - 87" > 0 & 0
- " & A *
. & " ;5'5 8 A
< 5 ! . " 5 8A
, 1 L')M ! 6H "
=&
& K - 2 " 2 ! A ! I - 2 0! & "
1 2 0 1
L')M " B && - 0 B A Æ " . 0 & & 1 "
& - !/. 3 . Æ "
O - 0 2 "
A - 0 N - 0 . - " < 5 " A ) 8A
& 2 7 L)M
Æ ! 6 ! A
. 6 " 0
/ 0
> L'M < 5 " 8A
' 6 LM - . . . 0 2 0
A
" B & / ! E A E 4 " & A 0 A ! E E & - 0 3 0 . 0
. 0 & 0 > " 1 0 " ! ! . " < 5 " # 8A
% 6 #
@ 2 < =& ) =& ) B ! . B " 0 & O & - !/. Descouvemont et al.
Barker et al.
Csoto et al.
Johnson et al.
Nunes et al.
Bennaceur et al.
J a)
b)
)I 5 6 7 " " 6" < B81
5
< =& ) O & " - !/. < =& ) . . 0 55 78 B & . . A 1 . ! . & ! . - 0 ! & A
" 2 "
B: A 1
L')M - !/. A 5 8 2 7 , " / - .
5G
. - < & 0 & > . 0
) 8
F . =& .
0 & " O 1 " - 1 .
0 & " O 0
" ! . < 5 2 B: ) 1 > . .
0 & < 3 " ! 0
< ! . .
< 5 > 2 & 0 & ) 78 , O B = . 02 " ) 78 - 0 . 02 - 0 " - ! "
, " L'#M
7 L)M
Q! LM
3 L5M
1 L')M
LM
< 5 8A
5 8
'5
* (3
# '5
#
#
C 6 , 1"
" ? 7 7 #D9 :%&
)I
'
$
1
+ 0 0 & O - & 2 ! & # ' & 1 A
- . / . ! 0 B 3 " 2 / " < 5 = + E! &E . 3 S - J 1 2
" Æ " " " / 5 L *M #5 L'M = ) / . L*M 1
" & 02 0! ! . & ! # ' 3 0 " & . 2 - 3 " > 2 & B ! . " - !/. 0 & O < 5 > . " 0 < 5 0 > . . "
/ . 0 AA . " B - J ! . - B I
V 5 V 57 ; K
5
5
, - -=- 0#(2, -
)
+ A 5#5 8 " / . = " ' + & 0 > " <;' 8A 78
'5 78 5 78 . . . Æ 0 & - !/. 78 8A E/ . E . 0 " B '5 5 78 > . . 0 = < =& ) > '
& 02 2 1 , "
/ " . 0 6 . 0 A
- 2 > - )) G & 2 " $ L'M
S (eV-b)
4 " LM . 0 > " B ) 78 A & "
. - " 0
S " ! && 3 " 2 0 > > . 0 ) 8
> A )5 78
45
Données (98)
Données (96)
Données (95)
40
35
30
25
20
15
10
5
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Ec.m. (MeV)
)I G= 6 #D9& ?<= D
$
5 !
- + '
< 5 0 > , " / ) . & 0 & L5A)5 8M L5A5) 8M
F . ) . < 5 . . & 0 & > > 2 " < 5 & 0 & 5A) 8
- " 5
" / < 5 5* 8A & 0 & > . 0 )
8 8A & A 5) 8 1 " ) " & - =& " & 02 0! ! F / " . - < 5 & < 5 &
0 > , " &
& " 2 )G 0 > 2 > . 0 0 & ) 8 . 5G .
5#
8 02 0! ! < 5 - '
#
*
< 5Æ < 5 8A
)
*)
*#)
5#
5
5*
5'
" G= < #1$)1 ( C&
6" G= < #11)% ( C&
)I C ,1"
<= 6 9 D !" < < )
! "
, "
L'#M
< 5Æ < 5
8A
< 5Æ < 5
8A
*)5*
*
5*
" G= < #1$) ( C&
6" G= < #11)% ( C&
)I C ,1"
<= 6
" "
3 . 0 < 5 ) ) 0 "
0 - & - !/. 1A Æ N - " > 2 ! . " " / < 5 " )) & 0 & , & " 0 , " /
! . , " / L'#M
7 L)M
Q! LM
3 L5M
1 L')M
LM
< 5Æ < 5 8A
& L5A) 8M
< 5Æ < 5 8A
& L5A5) 8M
5*
*5*
A
A
5
*#5
'
)
5#
))I C , 1" <= 6 < < ? 6 = 1$ ( C
F . . " < 5 > ! . L '# ) 5M .
0 > & - 5) 8 <& - . " " 1 5 8A 5#
#
&& " )G 'G > , " /
1 B
- . 0 & 55 78 0 1
2 " =& ) L'# ) M 0 > > . 0 ) 8 . " ;)# N -
" 0 O " " 1 S (eV-b)
45
Descouvemont et al.
Barker et al.
Csoto et al.
Bennaceur et al.
40
Données (98)
Données (96)
Données (95)
35
30
25
20
15
10
5
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Ecm (MeV)
)I G= 6 #D9& / #:)&
5 #D)& #::& ?<= D
3 " 0 "
" & " <5 > 2 < 0 <5 0 > A 5) 8 "
A / G . > - J . . E E 8A + 0 <5 > & 0 & 5 ) 8 " 0 > " 1 0 A / G . & * 8A
'
$
7 < :;
E0!& E 0 " 2 < 5 .
0 > & - 5)5 8 = " < 5 0 > , " / I
< 5; 8A 0 " . . 0 " )) 0 E ! . E G 1 " . " > " < L*M . 5
8A & ! " ". $$
! : " % " < 5 & ! & , " / " - / . < ; < 5 K A
" " - !/. > . 0 & 0 .
78 L#M 4 " I
< ; A## K#*' 8
% 0 & * 78 "
2
$
< ;** 8A
7"+
3 " . B 0 . !
$ L'M 8 &! L5M 1 0 " ! 44 02 2 ! " B - && " & ! . & ! #
3 . 0 - "
- 0 1A 2 " ! . , " / > . 0 & ) 8
2 " < 5 $ 8 &! 0 > > . 0 ) 8 )#
8 &! L5M
$ L'M < 5Æ < 5
) '
*')
5#
" < < < ;9; ;
)#I C , 1" <= C 6
+ 0 8 &! L5M / . "
0 -
& < 5 0 - Æ . #G ; ) 0 "
0 0 . " G
. $ L'M / . . >0 & ! )
4 . < 5 & $ 8 &! B B 02 2 " $ 8 &! . 0 " 0 & 3 - 0 0
/ & ! # " 02 0! . " )# 0B . / . B ! - . $
:;
, 2 67 / A
! LM , * <9 L) M Æ ! ! 0
/ + 1 + K + " " I ! 2 & & " ;#5 8S% #5 8S% / ! A
+ ! " . 1 & - & 1
" ! " Æ ! & > 9: - & & B
0 " " *
S (eV-b)
Æ " " 0 B !
- - ! " / ! =& )) " . " " =& " B H<4 45
Nos données (95+96+98)
Motobayashi et al. (98)
40
35
30
25
20
15
10
5
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Ecm (MeV)
))I 5 (6 H / ! LM . B 0 " , " L'#M " " < 5 ' 8A . " " $ 8 &! 2 , <9 L) M - " ! 5' 8A #55 78
$
7
:;
&
1 * 6 . 0 & 0 & A
Æ " "
& 5 - % ! & -A
- "
0 - ) 9: " 0 ! - L*5M C
- 0 0
- - ?! 7 / . " - ) , & "
0 & / . 1 L* *M " - !/. 0 & LM "
0 I
*
"
< 32 ) 9 :3 23 "
>
/ L* *)M 1 Æ 2 ! . - / 2 Æ 2 0 ,?% - )) L*#M 0 & O 0 = - 0 I
?
8% ;
?^
a0 a = 9 ! . a0
@ a
))
" - 0 2 0
- 0 Z - ! . F - 0 0
- ; 78 0 )) B ! & @ - ?! 7 / . = 0 > = & K
0
/
K " - L* *)M I
?
8% ; '
?^
a0 <522'
:.
;2
32
a
)#
;2
1522' / . ?2 - ?! A
7 < - > = ' - . ,
Æ 2 ÆA
2 0 )# " - !/. 0 & @ Æ - ! . 2 A 0 # 5
5G Æ ! . L*)M 1
Æ 2 . B
. & 9: " ! 0
Æ " 0 0 & & - )# " . 0 ! . ,0 7! O " L*)M A
& " " 5G
Æ
& - 5 ( 1 + 6 + 2 ! >0 > ! L#M 1
"
" < 5 ))) 8A - ( 0 & #* 8 1 "
- 1 . " 2 0 & 0 ! . . " 0 2 . A 0
0 & - . 2 . / / && 1 L'M 0 " " < 5 0
. 4
" " - < 5 1 & . I #' 8A
@ 1 - 2 %O! " < 5;** 8A
$$
L*'M " : :;
@ " < 5 2 ! " Æ - )'
,
+ > 0 . < 5 & 02 2 - . 2 B - 0 AA $ L'M 8 &! L5M + > . < 5
/ ! LM . = - L#M !/. &
L*'M
"
!
3 L#K' K*M
$ L'M
8 &! L5M
/ ! LM
L#M
%O! L*'M
, , , , N -
N -
, 1"
< 5Æ < 5 8A
*'
)
#
*
" < 6" 7 #%9& 7 #%D&
)'I C -
)
'
*
'
*
<
< F . " < 5 "
- L# 'M 0 " 8A 1 - 0 0 " " < 5 - L *M
6 . > " < L*M / . 2 "
A
+ . 5 . - $ 0 > & Q! LM & - )5 78 " 5 8A < 5 0 5
> " . " . " 0 " - L*M LM B
A " / @ " < 5; 8A A
3%16 / 3 % !/ LM 1 " " 0 > , " / L'#M "
/ " A #5 78
& 02 2 ! B 0 0 " S17(0) (eV-b)
1 " . Q! LM 1 &! $W L*M ** 1$** =& )#
Q! 0 / < 5 "
L* 5 'M " & 0 1$** 0 / - L*M LM & N L''M 6 . Æ A #5
. 0 "
" Q! ! & , > " ! 0 E E < 5 2 " 2 < 5 & 02 0! " < 5 & - L* M L5 'M
B & " 0 A
, " / . 0
0
! . #5' . . . " - L* M "
Æ = G % B . " 8 &! $ & ! " ; 5# . . " 34
7
8
Be(p,γ) B
32
30
28
26
CF88
Johnson92
Nacre97 Seattle97
24
22
Notre valeur
20
18
16
)#I C
4 " , 1" =& " " < 5
A +
! - / . . " 8A
" < 5
A . 2 B 0
0 "
> A
! " < 5; 8A 4 . . Æ B - - 02 0
& ! 1 2 0
& B 0 " A & / ,/A(9 7 + 2 L )M 2 " - "
0
- A
0 )G " B > 0 . !
< 5
6 . . 02 0
& B / B && 5* G & $.
:
+ " !
!
" < 8A
# 5 . ! LM L)M "
. " < ? 7! < L*M 8A
! " N - 0 < " & " 8A 8A 0 & 0 " . - 0 6 . 0 "
? 7! < . " < !! LM N 7A1!O LM 2 2 ! " " < Q! LM ) 8A
. N 7A1!O " " < Q! $ L'M # 8A
< " 0 "
0 < " < 5; 8A
)
A
3 " . 0 ! & . R 7 LM < AR 7 LM 1 Æ 0" = 0 I 0
/
" 0 "
0 & & 2 - " Æ 0 & * 78
, " 2 Æ & 0 & 5# ) 8
1 1 - 0> 0 ! "
Æ . " . 0 F B: 0 " - J 02 0! ! 1 2
" - , " Æ 0 +%+%+ *#* 78 ) 78 78 0 & > > " ! & < & " - . " - 2 1 = " " - !/. < 5 0 & 0 & - 5) 8 8A 0 A
< 5 E ! . E G 1A " < 5 > 2 ! . 3 " < 5 " - < 0 " < 5;
& = " .
. #
" 8A
0 0 " 3 . 02 0! && . - 0 0 " " < 5
,0
- -
" " 3 " F / 0 B
- . / . . 2 @ " A
1A B: 0 - !/. 0 & ! & " 0 . 0 " " - A
!/. < 5 '
# #
3 ! 4 55
8
5)
5**
<
8A
*
5*
*
V/ <
8A
*
%I 3 V <
8A
)
*
7 ? 7 7 < < ;9$" 6 ;):"
3 ! 4 55)
8
5#5
5'
5
5))'
5)
5**
5*)
5*)
5
#
<
8A
'
)
5
'
*
)
5
)
V/ <
8A
#
'
*
*
5
V <
8A
)
)
)
)
#
'
#
%I @ 6 G$
3 ! 4 556
8
5
5#
5*'
<
8A
#'
)
V/ <
8A
V <
8A
%I @ 6 G$
*
$ LM Q3 ! ( + LM < N 7A1!O
LM Q3 ! 6"W -
4 O % !/ Q
+!/ '#*
)5* )
% @ +!/ 6"W ,#' )5
L)M 6 , " ,< ( R1 (2
L#M H 1 +!/ 6"W 5'* 5#
+!/ )
L'M Q3 %
! " LM R< (
<%H 1 +!/ *) )
R 7 1 +!/ 6"W ,)) )
L*M 6 , " + & N%@+# 3 LM H 1 +!/ )*' *)
+!/ ))
L5M <6 + & N%@+# 3 LM Z $ 7 +!/ 6"W ' '*
LM Z $ 7 +!/ 6"W ** #*
LM Q3 ! < L)M %< < N 7A1!O
L#M Q3 ! ( + +
+!/ )*' 5
+!/ *
N! % !/ Q
#5'*
+!/ N / ) '5
& 4 - %" <
L'M Q3 ! % A # Q! 3 ! + @ " / + #
LM 3 (
+ & 7 +!/ 6"W ,#' '5
L*M 1 % & LM 1 % & 7/
LM <+ 7!/"
1 *' 6"W -
3%16 1 L5M < H !W 3 LM
! - / + Q ! + F 7 + I
+!/ 5* '#
3 +!/ +!/ ')5
+ " +!/ 6
)*#
Z < " <" Q
)*# 3 " 1 LM Q3 ! ! ISSWWW S > S<3"W& !S7 &&
L)M % , % % / ? < = ! "" <?
)
L#M 3 ( % = < & ) '
7
Q3 ! ? < A
L'M ? $ +!/ 6"W 1* * LM 6? R "
3 &! L*M +, + 7 LM 6? R "
+!/ #'5 )
+!/ 6"W #5'' *#
&! L5M $Q 8 &! - ! % +!/ < / )' 5
+!/ 6"W 1 5 '#
LM 1 ?O 7 X ! - -
+!/ %* LM N
/ ! +!/ 6"W ) '*5
LM N
/ ! L)M R <9 L#M ? % * 8*
+!/ 6"W ' '
L'M 1% H & +!/ 6"W *5* )
LM $ %>O &A<" L*M RR <7!
LM
+!/ Q
( 3 3 +!/ %)5 ** 4 L)5M 6 $ 8 ! ' #
B: / 8< <! / ?/ 3W Z 7 '
L)M 8 C )
3 L)M R ? +!/ 6"W 1 *' 5
L)M $1 7 % 4 Q
! +!/ 6 ! * +!/ ' L))M , [email protected] + @ 0 & *#
L)#M 1 6-
+ ?< 6 /
L)'M ?
3 N! @
" / - 1! &
+!/ %'5 * '*
L)M Q$ X& N64 ! ISSWWW !S S
8*
L)*M $ < L)M $ < X ! - -
L#5M Q+ <! L#M H & L#M 3 3 H%3N'
+!/ %## ' 5
4 4 ! ) *) ! * ) *
! 163 + &
L#M 1 0 Q 1 )
L#)M
/ FÆ O < 7 ! ""#$ %&'( ! % 3 / * 3W %[email protected]**A#
L##M $ %O O N! L#'M 1
! N! F / * @1 # )5
L#M Q + ! N! F / * L#*M F & 0 . 4+3 F /
L#M , X ! W X ! - -
+!/ %# L'5M , X ! W X ! - -
+!/ %# # ) * ) ) ,@3F, + ')
+ 6 ! ! < & A8 & L'M %
L'M
! WO
(& 3W Z 7 *
L'M %Q < 7
N% N 3 +!/ %5 )
L')M % 1
+!/ ) )
L'#M + , "
, / 3 L''M N% N 3 L'M $1 7 % L'*M R(R L'M ( R
+!/ '# Q
- +!/ *5 +!/ 6"W 1# * '
L5M $ 3
+!/ %#' ) )
%
+!/7 #*
3 +!/ %') * #
LM % W 3 !/ %#'''
LM R
R &
LM 1? Q! 7 +!/ ) ** '
N! % !/ Q
L)M $1 7 3 +!/ %#** # '
L#M + , " 3 L'M ? 4!- LM R Q
- +!/ H) * '
+!/ 6"W 1# # 5
LM $ N! , L*5M R Q
+!/ %)* ** )5
+!/ 6"W ) # 5
L*M % 1
5
& +!/ 6"W 1* * L*M 6$ 1! / 3 L*M 6, ? < R +!/ 6"W 1*
L*M ( [email protected] L*)M %
L*#M %
!
L*M H 1
+!/ 6"W *5 ) 5
7! O
L*'M % %O! &!
+!/ )'*
" . C
+!/ 6"W 1# # )
. N 4 44 ,
'#
+!/ 6"W * '5
?% $W % ,
)
3 ,
N )5 **
% & $ ( ! H & + %& 1 % & < ! Q$1! H 1 " % 1 ( Q Q R % -" Q3 <! Q+ N! 8 / 9:7
3W % / - ! 1 < +!/6" *5* *
$ ( ! H & + %& 1 % & < ! Q$1! H 1 " % 1 ( Q Q R % -" Q3 <! Q+ N! 8 / 9:7
3W % / - ! 1 < 3 ! 1 8 $- ! 4 </ F 3 % !/
8 H Q / 'A * I 3+
O < ( + I $ A
H & $ ( ! + %& 1 % & < ! Q$1! H 1 " % 1 ( Q Q R % -" Q3 <! Q+ N! 8 / 9:7
N! $ ! 4 < 3
1 - ( & H )
/ % *A 
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