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<p>The giant and pygmy dipole resonances in <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(^{13}\textrm{C}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mmultiscripts> <mrow /> <mrow /> <mn>13</mn> </mmultiscripts> <mtext>C</mtext> </mrow> </math></EquationSource> </InlineEquation> are studied within the extended quantum molecular dynamics (EQMD) model. Calculations for a non-clustered, spherical configuration fail to reproduce the measured spectrum. In contrast, a triangular <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(3\alpha + \text {n}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>3</mn> <mi>α</mi> <mo>+</mo> <mtext>n</mtext> </mrow> </math></EquationSource> </InlineEquation> cluster structure successfully reproduces the main peaks of the giant dipole resonance and the low-energy peak of the pygmy dipole resonance spectrum when oscillations along different axes are treated separately.</p>

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The triangular 3α + n cluster structure in 13C

  • 期刊论文

  • 发表日期：

    2026年7月24日

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  • Xuan-Ping Di,
  • De-Qing Fang,
  • Wan-Bing He,
  • Yu-Gang Ma

摘要

The giant and pygmy dipole resonances in \(^{13}\textrm{C}\) 13 C are studied within the extended quantum molecular dynamics (EQMD) model. Calculations for a non-clustered, spherical configuration fail to reproduce the measured spectrum. In contrast, a triangular \(3\alpha + \text {n}\) 3 α + n cluster structure successfully reproduces the main peaks of the giant dipole resonance and the low-energy peak of the pygmy dipole resonance spectrum when oscillations along different axes are treated separately.