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

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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.

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Authors and Affiliations

  1. Yerevan State University, Alek Manukyan Str. 1, Yerevan, 0025, Republic of Armenia

    A. S. Danagulyan, G. H. Hovhannisyan, T. M. Bakhshiyan & G. V. Martirosyan

Authors
  1. A. S. Danagulyan
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  2. G. H. Hovhannisyan
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  3. T. M. Bakhshiyan
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  4. G. V. Martirosyan
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Corresponding author

Correspondence to G. H. Hovhannisyan.

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Original Russian Text © A.S. Danagulyan, G.H. Hovhannisyan, T.M. Bakhshiyan, G.V. Martirosyan, 2016, published in Yadernaya Fizika, 2016, Vol. 79, No. 3, pp. 220–228.

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Danagulyan, A.S., Hovhannisyan, G.H., Bakhshiyan, T.M. et al. Special features of isomeric ratios in nuclear reactions induced by various projectile particles. Phys. Atom. Nuclei 79, 326–334 (2016). https://doi.org/10.1134/S1063778816020058

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  • DOI: https://doi.org/10.1134/S1063778816020058

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