<p>The particle-hole nuclei <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(^{134-136}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mn>134</mn> <mo>-</mo> <mn>136</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>Xe are studied using large-scale shell-model calculations with an extended pairing-plus-multipole interaction and monopole corrections. The negative-parity states <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(2^{-}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mn>2</mn> <mo>-</mo> </msup> </math></EquationSource> </InlineEquation> to <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(8^{-}\)</EquationSource> <EquationSource Format="MATHML"><math> <msup> <mn>8</mn> <mo>-</mo> </msup> </math></EquationSource> </InlineEquation> in <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(^{136}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>136</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Xe are predicted at 3.4–3.9 MeV. The quantitative analysis reveals that the monopole effects provide the dominant contribution to reproducing the spectroscopic structure of <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\(^{135}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>135</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Xe. The monopole effects between the <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(\pi g_{7/2}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>π</mi> <msub> <mi>g</mi> <mrow> <mn>7</mn> <mo stretchy="false">/</mo> <mn>2</mn> </mrow> </msub> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(\nu h_{11/2}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ν</mi> <msub> <mi>h</mi> <mrow> <mn>11</mn> <mo stretchy="false">/</mo> <mn>2</mn> </mrow> </msub> </mrow> </math></EquationSource> </InlineEquation> orbits substantially improve the shell-model precision in these particle-hole nuclei <InlineEquation ID="IEq10"> <EquationSource Format="TEX">\(^{134-136}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mrow> <mn>134</mn> <mo>-</mo> <mn>136</mn> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>Xe near the doubly magic nucleus <InlineEquation ID="IEq11"> <EquationSource Format="TEX">\(^{132}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mrow /> <mn>132</mn> </mmultiscripts> </math></EquationSource> </InlineEquation>Sn.</p>

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Monopole effects and cross-shell excitations in particle-hole systems 134–136Xe

  • Yu-Le Sun,
  • Xin-Yu Zhang,
  • Bin-Ran Tan,
  • Han-Kui Wang,
  • Saumi Dutta,
  • You-Bao Wang

摘要

The particle-hole nuclei \(^{134-136}\) 134 - 136 Xe are studied using large-scale shell-model calculations with an extended pairing-plus-multipole interaction and monopole corrections. The negative-parity states \(2^{-}\) 2 - to \(8^{-}\) 8 - in \(^{136}\) 136 Xe are predicted at 3.4–3.9 MeV. The quantitative analysis reveals that the monopole effects provide the dominant contribution to reproducing the spectroscopic structure of \(^{135}\) 135 Xe. The monopole effects between the \(\pi g_{7/2}\) π g 7 / 2 and \(\nu h_{11/2}\) ν h 11 / 2 orbits substantially improve the shell-model precision in these particle-hole nuclei \(^{134-136}\) 134 - 136 Xe near the doubly magic nucleus \(^{132}\) 132 Sn.