Title: Determination of the nuclear level densities and radiative strength function for 43 nuclei in the mass interval 28≤A≤200
Authors: KNEZEVIC D.JOVANCEVIC N.SUKHOVOJ ANATOLY M.MITSYNA LUDMILA V.KRMAR MIODRAGCONG VU D.HAMBSCH FRANZ-JOSEFOBERSTEDT STEPHANREVAY ZSOLTSTIEGHORST CHRISTIANDRAGIC ALEKSANDAR
Citation: EPJ Web of Conferences vol. 169 p. 00007
Publisher: EDP Sciences
Publication Year: 2018
JRC N°: JRC109156
ISSN: 2100 014X
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC109156
DOI: 10.1051/epjconf/201816900007
Type: Articles in periodicals and books
Abstract: The determination of nuclear level densities and radiative strength functions is one of the most important tasks in low-energy nuclear physics. Accurate experimental values of these parameters are critical for the study of the fundamental properties of nuclear structure. The step-like structure in the dependence of the level densities ρ on the excitation energy of nuclei Eex is observed in the two-step gamma cascade measurements for nuclei in the 28 ≤ А ≤ 200 mass region. This characteristic structure can be explained only if a co-existence of quasi-particles and phonons, as well as their interaction in a nucleus, are taken into account in the process of gamma-decay. Here we present a new improvement to the Dubna practical model for the determination of nuclear level densities and radiative strength functions. The new practical model guarantees a good description of the available intensities of the two step gamma cascades, comparable to the experimental data accuracy.
JRC Directorate:Nuclear Safety and Security

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