Authors

Citation

S. Chiba et al., MEASUREMENT AND THEORETICAL-ANALYSIS OF NEUTRON ELASTIC-SCATTERING AND INELASTIC REACTIONS LEADING TO A 3-BODY FINAL-STATE FOR LI-6 AT 10 TO 20 MEV, Physical review. C. Nuclear physics, 58(4), 1998, pp. 2205-2216

Citations number

66

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics, Nuclear

Journal title

ISSN journal

0556-2813

Volume

58

Issue

4

Year of publication

1998

Pages

2205 - 2216

Database

ISI

SICI code

0556-2813(1998)58:4<2205:MATONE>2.0.ZU;2-F

Abstract

The neutron elastic and inelastic scattering double-differential cross
sections of Li-6 were measured at incident neutron energies of 11.5,
14.1, and 18.0 MeV. A phenomenological neutron optical model potential
of Li-6 was constructed to describe the total and elastic scattering
cross sections from 5 MeV to several tens MeV, based on the present da
ta together with information from other works. This potential was foun
d to describe the inelastic scattering to the first excited state (E-x
=2.186 MeV) well via the distorted-wave Born approximation (DWBA) calc
ulation with the macroscopic vibrational model. The continuum neutron
energy spectra and angular distributions were then analyzed by the the
ory of final-state interaction extended to the DWBA form, with an assu
mption that the d-alpha interaction is dominant in the three-body fina
l state consisting of n, d, and alpha particles. Such a calculation wa
s found to be successful in explaining the major part of the low-excit
ation neutron spectra and angular distribution down to the Q-value reg
ion of - 9 MeV, except for the Q-value range where the n-alpha quasifr
ee scattering will give a non-negligible contribution at forward angle
s. [S0556-2813(98)04810-9].