Nuclear Physics Study of Impurities in Condensed System

凝聚体系中杂质的核物理研究

• 批准号: 09044082
• 负责人: TAKAHASHI Noriaki
• 金额: $ 5.44万
• 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: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09044082/
• 关键词: Radioactive Nuclear Beam; Short-Lived Nuclei; Nuclear Polarization; Superfluid helium; Impurity Ions; Snowballs; Radiation Detection Methods; 放射線検出法; スノ-ボール

This research encompasses the fields of nuclear physics and condensed matter physics. Based on the initiatives of the group at the Osaka University, to invent and develop the detection methods of impurities in liquid helium, the project aimed at the investigation of ions and atoms in superfluid helium. The newly developed alpha- and beta radiation methods increased the sensitivity of detection by many orders of magnitude compared with the traditional electric current methods.The wide range of unstable nuclei obtained at the accelerators of GSI offers good possibility to develop the field to the large scheme of the research. The cooperation was obtained as well from CERN (Switzerland), GANIL (France) and the Weizmann Institute of Science (Israel). Implantation and asymmetry measurements were carried out at Osaka University, RIKEN and GSI.Measured quantities are transport velocity, production rate, various velocity components and drift velocities.The obtained data were analyzed and discussed with the members of GSI, Dresden Technical University, Marburg University, Weizmann Institute of Science, Tokyo Institute of Technology and Osaka University.

这项研究包括核物理和凝聚态物理领域。基于大坂大学小组的倡议，发明和开发液氦中杂质的检测方法，该项目旨在研究超流氦中的离子和原子。新发展的α和β辐射方法使探测灵敏度比传统的电流方法提高了许多个数量级，在GSI加速器上获得的宽范围的不稳定核为该领域的大规模研究提供了很好的可能性。合作也得到了CERN（瑞士）、GANIL（法国）和魏茨曼科学研究所（以色列）的支持。在大坂大学、RIKEN和GSI进行了注入和非对称性测量，测量了输运速度、生产率、各种速度分量和漂移速度，并与GSI、德累斯顿工业大学、马尔堡大学、魏茨曼科学研究所、东京工业大学和大坂大学的成员进行了分析和讨论。