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Abstract <p>The <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(E1\)</EquationSource> <!--NuclPhys2560224Arsenyev-m3--> </InlineEquation> strength distributions of <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\({}^{130,132}\)</EquationSource> <!--NuclPhys2560224Arsenyev-m4--> </InlineEquation>Sn are studied. The coupling between one- and two-phonon terms in the wave functions of <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(1^{-}\)</EquationSource> <!--NuclPhys2560224Arsenyev-m5--> </InlineEquation> states is taken into account within the quasiparticle–phonon model based on the Skyrme energy density functional. The new calculation is extended by enlarging the variational space for the <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(1^{-}\)</EquationSource> <!--NuclPhys2560224Arsenyev-m6--> </InlineEquation> states. We found a reasonable agreement between the <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(E1\)</EquationSource> <!--NuclPhys2560224Arsenyev-m7--> </InlineEquation> strength distribution, obtained within the model and the experimental data. It is shown that the inclusion of two-phonon configurations gives a considerable contribution to the low-energy <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(1^{-}\)</EquationSource> <!--NuclPhys2560224Arsenyev-m8--> </InlineEquation> spectrum.</p>

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The Photoabsorption Cross Sections for \({}^{{130,132}}\)Sn

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • N. N. Arsenyev,
  • A. P. Severyukhin

摘要

Abstract

The \(E1\) strength distributions of \({}^{130,132}\) Sn are studied. The coupling between one- and two-phonon terms in the wave functions of \(1^{-}\) states is taken into account within the quasiparticle–phonon model based on the Skyrme energy density functional. The new calculation is extended by enlarging the variational space for the \(1^{-}\) states. We found a reasonable agreement between the \(E1\) strength distribution, obtained within the model and the experimental data. It is shown that the inclusion of two-phonon configurations gives a considerable contribution to the low-energy \(1^{-}\) spectrum.