Nuclear Optical Model Potential Proceedings of the Meeting Held in P
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55 Nuclear Optical Model Potential Proceedings of the Meeting Held in Pavia, April 8 and 9, 1976
Edited by S. Boffi and G. Passatore
Springer-Verlag Berlin-Heidelberg. New York 1976
Editors S, Boffi Istituto di Fisica Teorica Universit& di Pavia Via Bassi, 4 27100 Pavia/Italy G. Passatore Istituto di Scienze Fisiche Universit& di Genova Via Benedetto XV, 5 16132 Genova/Italy
ISBN 3-540-07864-9 Springer-Verlag Berlin Heidelberg New York ISBN 0-387-07864-9 Springer-Verlag New York Heidelberg Berlin This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. Under § 54 of the German Copyright Law where copies are made for other than private use, a fee is payable to the publisher, the amount of the fee to be determined by agreement with the publisher. © by Springer-Verlag Berlin • Heidelberg 1976 Printed in Germany Printing and binding: Beltz Offsetdruck, Hemsbach/Bergstr.
PREFACE
The i n t e r a c t i o n of a n u c l e o n of m o d e r a t e energy w i t h a nucleus an e x c e e d i n g l y c c m p l i c a t e d process. However, to elastic scattering,
the d i s c u s s i o n
it has long b e e n r e c o g n i z e d that an a d e q u a t e
d e s c r i p t i o n can be a c h i e v e d by m e a n s varying
confining
o f a single p a r t i c l e p o t e n t i a l
s m o o t h l y w i t h energy and nuclear size.
In principle,
tential should be n o n - l o c a l and energy dependent.
o r e t i c a l efforts have shown how to p a r s m e t r i z e simpler
of single p a r t i c l e states in nuclei.
this po-
E x p e r i m e n t a l and theforms of this
p o t e n t i a l in order to r e p r o d u c e positions, widths and w a v e
functions
This p h e n c m e n o l o g i c a l a p p r o a c h
has a l r e a d y g i v e n s a t i s f a c t o r y results. ding m o d e l
is
In particular,
the recent
fol-
c a l c u l a t i o n s of the optical p o t e n t i a l can be e x t e n d e d to
include scattering
of a l p h a - p a r t i c l e s and heavy ions p r o v i d e d a c c u r a t e
n u c l e a r d e n s i t y d i s t r i b u t i o n s are available. The p r o g r e s s both o f t h e o r e t i c a l i n v e s t i g a t i o n s and o f meastlrements of fine details in the cross section and the p o l a r i z a t i o n of n u c l e o n s m a k e s this the right m o m e n t to r e c o n s i d e r the w h o l e problem of the optical m o d e l p o t e n t i a l in a unified app~roach, including
also b o u n d sta-
tes. The very recent a p p l i c a t i o n s o f nuclear m a t t e r
t e c h n i q u e s to cal-
culate the m a s s o p e r a t o r in terms of r e a l i s t i c n u c l e o n - n u c l e o n actions, m a d e
in the last two years,
retical achievement.
inter-
c o n s t i t u t e a very i m p o r t a n t theo-
They provide a direct e v a l u a t i o n of the variou
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