\({}^{{8}}\)李氏低洼激发态研究

IF 0.3 4区物理与天体物理 Q4 PHYSICS, NUCLEAR

Physics of Atomic Nuclei Pub Date : 2025-05-21 DOI:10.1134/S1063778825700073

A. S. Demyanova, A. N. Danilov, S. A. Goncharov, N. T. Burtebayev, V. I. Starastsin, T. I. Leonova

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引用次数: 0

摘要

通过对\({}^{8}\textrm{Li}+{}^{2}\) H和\({}^{8}\textrm{Li}+{}^{12}\) C衍射散射的分析，实验推导出了\({}^{8}\) Li在短寿命激发态的均方根半径。用修正衍射模型（MDM）分析了弹性散射和非弹性散射的微分截面。第一激发态0.98 MeV 1 \({}^{+}\)未观察到明显的半径增强。同时，对于第二激发态2.26 MeV 3 \({}^{+}\)，估计有40 \(\%\)半径增强。这一结果为该态可能存在的光晕结构提供了依据。

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Study of the \({}^{{8}}\)Li Low-Lying Excited States

The root-mean-square radii of \({}^{8}\)Li in the short-lived excited states were experimentally deduced from the analysis of \({}^{8}\textrm{Li}+{}^{2}\)H and \({}^{8}\textrm{Li}+{}^{12}\)C diffraction scattering. Differential cross sections of the elastic and inelastic scattering were analyzed by the Modified diffraction model (MDM). No significant radius enhancement was observed for the first excited state 0.98 MeV 1\({}^{+}\). At the same time 40\(\%\) radius enhancement was estimated for the second excited state 2.26 MeV 3\({}^{+}\). This result is argument to possible halo structure of this state.

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来源期刊

Physics of Atomic Nuclei 物理-物理：核物理

CiteScore

0.60

自引率

25.00%

发文量

审稿时长

3-6 weeks

期刊介绍： Physics of Atomic Nuclei is a journal that covers experimental and theoretical studies of nuclear physics: nuclear structure, spectra, and properties; radiation, fission, and nuclear reactions induced by photons, leptons, hadrons, and nuclei; fundamental interactions and symmetries; hadrons (with light, strange, charm, and bottom quarks); particle collisions at high and superhigh energies; gauge and unified quantum field theories, quark models, supersymmetry and supergravity, astrophysics and cosmology.