Spin Resonances in Nuclei

原子核中的自旋共振

基本信息

批准号：
07044085
负责人：
EJIRI Hiroyasu
金额：
$ 1.86万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044085/
关键词：
Solar Neutrino Gamma ray Gammow-Teller Resonance Giant Resonance Neclei Cyclotron Supernovae Double beta decay

项目摘要

The present project for the cooperative scientific ininvestigation of the spin-sisospin excitations in nuclei aims to study the "Spin Excitations in Nuelei" in both the cyclotron institutes at RCNP (Research Center for Nuclear Physics, Osaka University) and at KVI (Groningen, The Netherlands). This fiscal yaer, we have measured, for the first time, the gamma decay from the Gamow-Teller resonances via the ^<90>Zr (^3He, t)^<90>N band ^<71>Ga (^3He, t)^<71>Ge reactions at the ^3He bombarding energy of 450 MeV.These studies are important to give basic data for the solar neutrino detection as well as the basic understanding of the spin excitation in nuclei. The data are aslo important in uderstanding the double deta decay.The experimental program of investigation the isovector monopole giant resonaces are discussed in the AGOR cyclotron facility as well as in the RCNP facility. The AGRO cyclotron could accelerate the first beam in October 1995. The beam transport line has been established. The magnetic spectrometer is ready for the measurement of the (^3He, t) reactions in coincidence with decay neutrons and protons. We futhemore discuss the collaboration work accociated with the "EuroSuperNovae" project, in which the neutrino absorption cross-sections by nuclei are studied in order to understand the explosion mechanisms of typeII supermovae.The gamma emittion processes in the protonproton and proton-nucleus collisions are one of the syubjects to be studied in this project . Theoretical studies are in progress very much. The experimental setup for the detection of the high energy gamma rays are mostly finished at KVI.

目前对原子核中自旋-西索自旋激发的合作科学调查项目旨在研究 RCNP（大阪大学核物理研究中心）和 KVI（格罗宁根，荷兰）。本财年，我们首次通过 ^<90>Zr (^3He, t)^<90>N 带 ^<71>Ga (^3He, t)^<71>Ge在^3He轰击能量为450 MeV下的反应。这些研究对于提供太阳中微子探测的基础数据以及对太阳中微子的基本认识具有重要意义。原子核中的自旋激发。这些数据对于理解双 deta 衰减也很重要。在 AGOR 回旋加速器设施以及 RCNP 设施中讨论了研究等矢量单极巨共振的实验计划。 1995年10月，AGRO回旋加速器对第一束束流进行加速，束流传输线已建成。磁谱仪已准备好测量与衰变中子和质子同时发生的 (^3He, t) 反应。我们还讨论了与“EuroSuperNovae”项目相关的合作工作，其中研究了原子核的中微子吸收截面，以了解II型超动星的爆炸机制。质子-质子和质子-核碰撞中的伽马发射过程是本项目要研究的课题之一。理论研究正在取得很大进展。高能伽马射线探测的实验装置大部分在 KVI 完成。