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Title: Microscopic study of {sup 6}He elastic scattering around the Coulomb barrier

Abstract

We investigate {sup 6}He scattering on {sup 27}Al, {sup 58}Ni, {sup 120}Sn, and {sup 208}Pb in a microscopic version of the Continuum Discretized Coupled Channel (CDCC) method. We essentially focus on energies around the Coulomb barrier. The {sup 6}He nucleus is described by an antisymmetric 6-nucleon wave function, defined in the Resonating Group Method. The {sup 6}He continuum is simulated by square-integrable positive-energy states. The model does not depend on any adjustable parameter as it is based only on well known nucleon-target potentials. We show that experimental elastic cross sections are fairly well reproduced. The calculation suggests that breakup effects increase for high target masses. For a light system such as {sup 6}He+{sup 27}Al, breakup effects are small, and a single-channel approximation provides fair results.

Authors:
 [1]
  1. Physique Nucléaire Théorique et Physique Mathématique, C.P. 229, Université Libre de Bruxelles (ULB), B 1050 Brussels (Belgium)
Publication Date:
OSTI Identifier:
22608493
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1753; Journal Issue: 1; Conference: Latin American symposium on nuclear physics and applications, Medellin (Colombia), 30 Nov - 4 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALUMINIUM 27 TARGET; APPROXIMATIONS; COULOMB FIELD; COUPLED CHANNEL THEORY; CROSS SECTIONS; ELASTIC SCATTERING; HELIUM 6; LEAD 208 TARGET; MASS; NICKEL 58 TARGET; NUCLEONS; RESONATING-GROUP METHOD; SIMULATION; TIN 120 TARGET; VISIBLE RADIATION; WAVE FUNCTIONS

Citation Formats

Descouvemont, P. Microscopic study of {sup 6}He elastic scattering around the Coulomb barrier. United States: N. p., 2016. Web. doi:10.1063/1.4955345.
Descouvemont, P. Microscopic study of {sup 6}He elastic scattering around the Coulomb barrier. United States. doi:10.1063/1.4955345.
Descouvemont, P. Thu . "Microscopic study of {sup 6}He elastic scattering around the Coulomb barrier". United States. doi:10.1063/1.4955345.
@article{osti_22608493,
title = {Microscopic study of {sup 6}He elastic scattering around the Coulomb barrier},
author = {Descouvemont, P.},
abstractNote = {We investigate {sup 6}He scattering on {sup 27}Al, {sup 58}Ni, {sup 120}Sn, and {sup 208}Pb in a microscopic version of the Continuum Discretized Coupled Channel (CDCC) method. We essentially focus on energies around the Coulomb barrier. The {sup 6}He nucleus is described by an antisymmetric 6-nucleon wave function, defined in the Resonating Group Method. The {sup 6}He continuum is simulated by square-integrable positive-energy states. The model does not depend on any adjustable parameter as it is based only on well known nucleon-target potentials. We show that experimental elastic cross sections are fairly well reproduced. The calculation suggests that breakup effects increase for high target masses. For a light system such as {sup 6}He+{sup 27}Al, breakup effects are small, and a single-channel approximation provides fair results.},
doi = {10.1063/1.4955345},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1753,
place = {United States},
year = {Thu Jul 07 00:00:00 EDT 2016},
month = {Thu Jul 07 00:00:00 EDT 2016}
}