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Title: Elastic alpha scattering experiments and the alpha-nucleus optical potential at low energies

High precision angular distribution data of (α,α) elastic scattering are presented for the nuclei {sup 89}Y, {sup 92}Mo, {sup 106,110,116}Cd, {sup 112,124}Sn, and {sup 144}Sm at energies around the Coulomb barrier. Such data with small experimental uncertainties over the full angular range (20–170°) are the indispensable prerequisite for the extraction of local optical potentials and for the determination of the total reaction cross section σ{sub reac}. A systematic fitting procedure was applied to the experimental scattering data presented to obtain comprehensive local potential parameter sets that are composed of a real folding potential and an imaginary potential of Woods–Saxon surface type. The potential parameters obtained were used in turn to construct a new systematic α-nucleus potential with very few parameters. Although this new potential cannot reproduce the angular distributions with the same small deviations as the local potential, the new potential is able to predict the total reaction cross sections for all cases under study.
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ; ;  [1]
  1. Institute of Nuclear Research (ATOMKI), H-4001 Debrecen (Hungary)
  2. (Germany)
  3. Centro de Física Nuclear, University of Lisbon, P-1649-003 Lisbon (Portugal)
Publication Date:
OSTI Identifier:
22237255
Resource Type:
Journal Article
Resource Relation:
Journal Name: Atomic Data and Nuclear Data Tables; Journal Volume: 99; Journal Issue: 6; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACCURACY; ANGULAR DISTRIBUTION; CADMIUM 106; CADMIUM 110; CADMIUM 116; COULOMB FIELD; CROSS SECTIONS; ELASTIC SCATTERING; MOLYBDENUM 92; POTENTIALS; SAMARIUM 144; TIN 112; TIN 124; YTTRIUM 89