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VI Reunião de Trabalho Física Nuclear.pdf - Sociedade Brasileira ...

VI Reunião de Trabalho Física Nuclear.pdf - Sociedade Brasileira ...

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B(M1,w) com f o .<br />

Os elementos <strong>de</strong> matriz B(AL,w) estio relacionados coin a<br />

seccSo <strong>de</strong> choque <strong>de</strong> fotoabsorcao atraves <strong>de</strong>:<br />

I u AL oodw (L+1)<br />

Para o caso particular <strong>de</strong> AL = MI temos:<br />

w 2L-1<br />

2 B(AL,w) (11)<br />

L[(2L+1)::]<br />

0 111 ( , )dw . 80 2<br />

jfic ./ 03 B(Ml,w) (12)<br />

Como é usual fornecer B(Ml,w) em unida<strong>de</strong>s <strong>de</strong><br />

crever (12):<br />

j<br />

y<br />

1 8a 3 2 e+i<br />

(w)dw =<br />

2 B(Ml,w)<br />

N (713-2) 2<br />

u<br />

o<br />

4n 3 tic 2 B(M1 w)<br />

- 9aw (--_7 )<br />

pc<br />

Utilizando-se:<br />

obtem-se<br />

0 = (137,035982) -1<br />

tic = 197432858 MeV-fM<br />

? c 2 = 938,2796 MeV<br />

o<br />

2 '<br />

tl YMl<br />

(w-,dw = 4,4478.x 10 -2 we 12±rilLIL "i MeVmb .<br />

50<br />

2 -I<br />

u<br />

po<strong>de</strong>mos rees-<br />

(1 3)<br />

(14)

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