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

AE
with t 71F
T n
(see Refs. 13 and 14).
in the other extreme of scattering of spherical nuclei
where Coulomb excitation of low-lying states is negligible, the
virtual excitation of giant resonances come into 'play. Here t
the adiabatic liMit gives a purely real i-independent polarization
potential which has the following form for the giant quadrupole
case
( 1.)
V Cr) = "
0J. put
g (E2.)t
p a- --T----
25- 4 T(21
2-7. 4 el 8p (r)1i ir 6
E ' 21
P
where AE is the excitation energy of GQR (AE (2) . - MeV)
A10
and B(E21 is the corresponding reduced excitation probability.
When used in Eqs. (6) and (6) , - we Obtainthe following
0 15)
expression fort R
0-
A gi t
= — 0 da/ IF
gEd 6 A;.. ---15-
_ cdt 46.
0: Ta z
{-- 3 / r t -I- 4-2.0 5f., 4.i.zet — /20 t A...... 4 ek .
.1. 2 1 5-c,, i, A,,., : — Ad 42c-47, 40 4;4. 3A. 7,- i co-7 # 44..
. 5 1
0 .
+ 4_1 AL 0 40
.
;4. lb
.
— (4-$ o 4)
0
AL-3 1,
.
c‘n ci.
.
— pg- - A.;-.1. I,
-1- 5 613 .1,...4 - 4, — kr-g -i-;-. 4* .1 .
Though quite small, the deviation from unity of
127
(24)
(25)
.