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Title: Special features of isomeric ratios in nuclear reactions induced by various projectile particles

Abstract

Calculations for (p, n) and (α, p3n) reactions were performed with the aid of the TALYS-1.4 code. Reactions in which the mass numbers of target and product nuclei were identical were examined in the range of A = 44–124. Excitation functions were obtained for product nuclei in ground and isomeric states, and isomeric ratios were calculated. The calculated data reflect well the dependence of the isomeric ratios on the projectile type. A comparison of the calculated and experimental data reveals, that, for some nuclei in a high-spin state, the calculated data fall greatly short of their experimental counterparts. These discrepancies may be due to the presence of high-spin yrast states and rotational bands in these nuclei. Calculations involving various level-density models included in the TALYS-1.4 code with allowance for the enhancement of collective effects do not remove the discrepancies in the majority of cases.

Authors:
; ;  [1]
  1. Yerevan State University (Armenia)
Publication Date:
OSTI Identifier:
22612670
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 79; Journal Issue: 3; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ENERGY-LEVEL DENSITY; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; HIGH SPIN STATES; ISOMER RATIO; NUCLEAR REACTIONS; NUCLEI; ROTATIONAL STATES; T CODES; YRAST STATES

Citation Formats

Danagulyan, A. S., Hovhannisyan, G. H., E-mail: hov-gohar@ysu.am, Bakhshiyan, T. M., and Martirosyan, G. V. Special features of isomeric ratios in nuclear reactions induced by various projectile particles. United States: N. p., 2016. Web. doi:10.1134/S1063778816020058.
Danagulyan, A. S., Hovhannisyan, G. H., E-mail: hov-gohar@ysu.am, Bakhshiyan, T. M., & Martirosyan, G. V. Special features of isomeric ratios in nuclear reactions induced by various projectile particles. United States. https://doi.org/10.1134/S1063778816020058
Danagulyan, A. S., Hovhannisyan, G. H., E-mail: hov-gohar@ysu.am, Bakhshiyan, T. M., and Martirosyan, G. V. 2016. "Special features of isomeric ratios in nuclear reactions induced by various projectile particles". United States. https://doi.org/10.1134/S1063778816020058.
@article{osti_22612670,
title = {Special features of isomeric ratios in nuclear reactions induced by various projectile particles},
author = {Danagulyan, A. S. and Hovhannisyan, G. H., E-mail: hov-gohar@ysu.am and Bakhshiyan, T. M. and Martirosyan, G. V.},
abstractNote = {Calculations for (p, n) and (α, p3n) reactions were performed with the aid of the TALYS-1.4 code. Reactions in which the mass numbers of target and product nuclei were identical were examined in the range of A = 44–124. Excitation functions were obtained for product nuclei in ground and isomeric states, and isomeric ratios were calculated. The calculated data reflect well the dependence of the isomeric ratios on the projectile type. A comparison of the calculated and experimental data reveals, that, for some nuclei in a high-spin state, the calculated data fall greatly short of their experimental counterparts. These discrepancies may be due to the presence of high-spin yrast states and rotational bands in these nuclei. Calculations involving various level-density models included in the TALYS-1.4 code with allowance for the enhancement of collective effects do not remove the discrepancies in the majority of cases.},
doi = {10.1134/S1063778816020058},
url = {https://www.osti.gov/biblio/22612670}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 3,
volume = 79,
place = {United States},
year = {Sun May 15 00:00:00 EDT 2016},
month = {Sun May 15 00:00:00 EDT 2016}
}