Complementary optical-potential analysis of {alpha}-particle elastic scattering and induced reactions at low energies

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1016/j.adt.2009.02.001· OSTI ID:21274227

Obreja, A C; Roman, F L; Avrigeanu, V ^[1]; Oertzen, W von ^[2]

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1. 'Horia Hulubei' National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, 76900 Bucharest (Romania)
2. Freie Universitaet Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin (Germany)

A previously derived semi-microscopic analysis based on the Double Folding Model, for {alpha}-particle elastic scattering on A{approx}100 nuclei at energies below 32 MeV, is extended to medium mass A{approx}50-120 nuclei and energies from {approx}13 to 50 MeV. The energy-dependent phenomenological imaginary part for this semi-microscopic optical model potential was obtained including the dispersive correction to the microscopic real potential, and used within a concurrent phenomenological analysis of the same data basis. A regional parameter set for low-energy {alpha}-particles entirely based on elastic scattering data analysis was also obtained for nuclei within the above mentioned mass and energy ranges. Then, an ultimate assessment of ({alpha},{gamma}), ({alpha},n), and ({alpha},p) reaction cross sections considered target nuclei from {sup 45}Sc to {sup 118}Sn and incident energies below {approx}12 MeV. The former diffuseness of the real part of optical potential as well as the surface imaginary potential depth have been found to be responsible for the actual difficulties in the description of these data, and modified in order to obtain an optical potential which describes equally well both the low-energy elastic scattering and induced reaction data for {alpha}-particles.

• OSTI ID: 21274227
• Journal Information: Atomic Data and Nuclear Data Tables, Vol. 95, Issue 4; Other Information: DOI: 10.1016/j.adt.2009.02.001; PII: S0092-640X(09)00003-5; Copyright (c) 2009 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
ALPHA PARTICLES
ALPHA REACTIONS
CADMIUM 106
CHROMIUM 50
CHROMIUM 52
CHROMIUM 53
COBALT 59
COPPER 63
COPPER 65
CROSS SECTIONS
DATA ANALYSIS
ELASTIC SCATTERING
ENERGY DEPENDENCE
FOLDING MODEL
GERMANIUM 70
IRON 54
IRON 56
IRON 58
MANGANESE 56
MASS
MEV RANGE 10-100
MOLYBDENUM 92
MOLYBDENUM 94
NICKEL 58
NICKEL 60
NICKEL 62
NICKEL 64
OPTICAL MODELS
RUTHENIUM 96
RUTHENIUM 98
SCANDIUM 45
SILVER 107
TIN 112
TIN 112 TARGET
TIN 116
TIN 118
TIN 118 TARGET
TIN 122
TIN 124
TITANIUM 46
TITANIUM 48
TITANIUM 50
TITANIUM-ALPHA
VANADIUM 51
YTTRIUM 89
ZIRCONIUM 90
ZIRCONIUM 91