Complete sets of polarization transfer observables for the Pb-208 ($\vec{p}, \vec{n}$) reaction at 296 MeV and Gamow-Teller and spin-dipole strengths for Pb-208
Complete sets of polarization transfer observables for the Pb-208 ($\vec{p}, \vec{n}$) reaction at 296 MeV and Gamow-Teller and spin-dipole strengths for Pb-208
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DOI：
10.1103/physrevc.85.064606
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发表时间：
2012-06
影响因子：
3.1
通讯作者：
T. Wakasa;M. Okamoto;M. Dozono;K. Hatanaka;M. Ichimura;S. Kuroita;Y. Maeda;H. Miyasako;T. Noro;T. Saito;Y. Sakemi;T. Yabe;K. Yako
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文献类型：
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作者：
T. Wakasa;M. Okamoto;M. Dozono;K. Hatanaka;M. Ichimura;S. Kuroita;Y. Maeda;H. Miyasako;T. Noro;T. Saito;Y. Sakemi;T. Yabe;K. Yako
我们报道了MeV轰击能量下的反应截面的测量和对反应角的分析，以及全套极化转移观测和诱导极化。采用多极分解技术从连续介质中提取Gamow-Teller(GT)和自旋偶极(SD)分量。还首次使用极化观测数据将SD分量分离为不同的自旋宇称转移(、和)贡献。在GT巨共振以外的连续体中发现了一个显著的强度，这是由于组态混合效应和向量自旋单极子(IVSM)的贡献。SD强度分布明显依赖于，这是由Hartree-Fock(HF)加随机位相近似(RPA)计算合理地再现的，其中包括Skyrme与张量分量[Phys]的相互作用。C 83版，054316(2011)PRVCAN0556-281310.1103/PhysRevC.83.054316].
We report measurements of cross sections and analyzing powers for reaction angles of–and complete sets of polarization transfer observables and induced polarizations at–for thereaction at a bombarding energy ofMeV. A multipole decomposition technique was applied to the data to extract the Gamow-Teller (GT) and spin-dipole (SD) components from the continuum. The polarization observables were also used, for the first time, to separate the SD components into different spin-parity transfer (,, and) contributions. A significant strength withis identified in the continuum beyond the GT giant resonance, which is due to configuration mixing effects and the isovector spin monopole (IVSM) contribution. The SD strength distributions were clearly dependent on, which is reasonably reproduced by Hartree-Fock (HF) plus random phase approximation (RPA) calculations that include the Skyrme interaction with tensor components [Phys. Rev. C 83, 054316 (2011)PRVCAN0556-281310.1103/PhysRevC.83.054316].