The Skyrme-TQRPA calculations of electron capture on hot nuclei in pre-supernova environment

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778816060077· OSTI ID:22612579

Dzhioev, Alan A., E-mail: [e-mail]; Vdovin, A. I., E-mail: [e-mail] ^[1]; Stoyanov, Ch., E-mail: [e-mail] ^[2]

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1. JINR, Bogoliubov Laboratory of Theoretical Physics (Russian Federation)
2. Bulgarian Academy of Sciences, Institute for Nuclear Research and Nuclear Energy (Bulgaria)

We combine the thermal QRPA approach with the Skyrme energy density functional theory (Skyrme–TQRPA) for modelling the process of electron capture on nuclei in supernova environment. For a sample nucleus, {sup 56}Fe, the Skyrme–TQRPA approach is applied to analyze thermal effects on the strength function of GT{sub +} transitions which dominate electron capture at E{sub e} ≤ 30 MeV. Several Skyrme interactions are used in order to verify the sensitivity of the obtained results to the Skyrme force parameters. Finite-temperature cross sections are calculated and the results are comparedwith those of the other model calculations.

• OSTI ID: 22612579
• Journal Information: Physics of Atomic Nuclei, Vol. 79, Issue 6; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CROSS SECTIONS
DENSITY FUNCTIONAL METHOD
ELECTRON CAPTURE
HOT NUCLEI
INTERACTIONS
IRON 56
MEV RANGE 10-100
SKYRME POTENTIAL
STRENGTH FUNCTIONS
SUPERNOVAE
TEMPERATURE DEPENDENCE