OPTICAL MODEL. Page: 1 of 56
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To be presented at the Conference on Nuclear Structure Study with Neutrons, Budapest,
Hungary, July - August 5, 1972)
THE OPTICAL MODEL N O T I C E
This report was prepared as an account of work
sponsored by the United States Government Neither
the United States nor the United States Atomic Energy
G. R. Satchler and F. G. Perey commission, nor any of their employees, nor any of
their contractors, subcontractors, or their employees,
Oak Ridge National Laboratory makes any warranty, express or implied, or assumes any
Oak Ridge, Tennessee, U.S.A. legal liability or responsibility for the accuracy, com-
pleteness or usefulness of any information, apparatus,
product or process disclosed, or represents that its use
would not infringe privately owned rights.
1. Introduction
Aside from its intrinsic interest, the optical model of the scat-
tering of neutrons from nuclei has a number of practical uses. It allows
one to correlate large amounts of data on elastic scattering, absorption.
and total cross sections and hence to predict by extrapolation the cross
sections for targets or energies as yet unmeasured. Through the intro-
duction of the Hauser-Feshbach and/or direct interaction formalisms, this
predictive power may be extended to inelastic scattering and some other
reactions.
There are several theoretical ways of viewing the optical potential
U. A simple physical picture is given by the expression
U(r) = p(ri) v(r,r) dr + exchange terms
2(1)
+ terms of order v and higher,
where v(r,ri) is an effective interaction between the projectile nucleon
at r and a target nucleon at r , while p(r ) is the density distribution
of the target nucleons. This v is essentially the Brueckner-Bethe
Research sponsored by the U. S. Atomic Enercy Commission under contract
with Union Carbide Corporation.
DISTRIBUTION Of TIIS DOCUMENT IS tUlLIMITED
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Satchler, G.R. & Perey, F.G. OPTICAL MODEL., report, October 31, 1972; Oak Ridge, Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1028217/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.