Isospin-spin responses in charge-exchange exothermic reactions

电荷交换放热反应中的同位自旋反应

• 批准号: 17002003
• 负责人: SAKAI Hideyuki
• 金额: $ 369.74万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Specially Promoted Research
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17002003/
• 关键词: スピン・アイソスピン応答; 発熱型荷電交換反応; 磁気分析器; 時間領域; 不安定核; 高分解能; 磁気スペクトロメータ; 二重ベータ崩壊; 分散整合; スピン単極巨大共鳴; 二重べータ崩壊; (p, n)反応; (p,n)反応; スピン・アイソスピン応答; 発熱型荷電交換反応; 磁気分析器; 時間領域; 不安定核; 高分解能; 磁気スペクトロメータ; 二重ベータ崩壊; 分散整合; スピン単極巨大共鳴; 二重べータ崩壊; (p, n)反応; (p,n)反応

Spin-isospin responses in highly excited state of nucleus are studied by the exothermic charge-exchange(CE) reaction with unstable beam in the time-like region. To realize the study the high resolution magnetic spectrometer SHARAQ was designed and constructed. The SHARAQ was installed in the RIBF of RIKEN Nishina Center. A search for a new spin mode was made and theβ+ isovector spin monopole resonance was found. The nuclear matrix elements(NME) for the 2v2βdecay, ^<48>Ca and ^<116>Cd, were studied by the (p,n) and (n,p) reactions. Obtained NMEs will play a decisive role in the determination of neutrino mass once 0v2β decay were found.

在类似时间样区域的放热电荷 - 交换反应（CE）反应，研究了高度令人兴奋的核us状态下的自旋 - 异种反应。为了实现这项研究，设计和构建了高分辨率磁光谱仪。 Sharaq安装在Riken Nishina Center的Ribf中。搜索了新的自旋模式，并发现了β+同源器旋转单极共振。 2v2βDecay， ^<48> ca和 ^<116> cd的核基质元件（NME）由（p，n）和（n，p）反应研究。一旦发现0V2β衰减，获得的NME将在确定神经元质量中起决定性作用。