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

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1016/J.ADT.2012.10.003· OSTI ID:22237255

Diakonie-Klinikum, D-74523 Schwäbisch Hall ^[1]; Kiss, G. G.; Fülöp, Zs. ^[2]; Galaviz, D. ^[3]; Gyürky, Gy.; Somorjai, E. ^[2]

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1. Germany
2. Institute of Nuclear Research (ATOMKI), H-4001 Debrecen (Hungary)
3. Centro de Física Nuclear, University of Lisbon, P-1649-003 Lisbon (Portugal)

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.

• OSTI ID: 22237255
• Journal Information: Atomic Data and Nuclear Data Tables, Vol. 99, 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); ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

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