Collection and Transport of Radioactive Ions in Superfluid Helium

超流氦中放射性离子的收集和传输

• 批准号: 08554004
• 负责人: TAKAHASHI Noriaki
• 金额: $ 6.78万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08554004/
• 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; 放射性ビーム

The objectives of this project are studies on particular behavior of ions and atoms in superfluid helium. A cryostat system was built. The new test apparatus enables us to introduce and transport fast ions into liquid helium. Application of NMR on the core ions of the formed snowballs and detection of nuclear radiation are carried out with this system.Through the eventual improvements in the system the temperature is lowered down to almost 1.1K.The stability in temperature and mechanical strength is the main factors to be assured. We are satisfied for the moment that such a system has been completed. The experiments being carried out are on the collection and trapping to make the final objectives of the spectroscopy available. The system is used at RCNP and RIKEN.The detector system has been tested at the Kyoto University Tandem Laboratory.The investigation has been introduced at the conferences and workshops at overseas and in Japan. The peculiar behaviors of the neutral components are to be solved, and the key to it, we think, is at our hands.The study will be further developed to the movement of atoms and ions in superfluid helium.

该项目的目标是研究超流氦中离子和原子的特殊行为。建立了低温恒温器系统。新的测试设备使我们能够将快离子引入并传输到液氦中。通过该系统对形成的雪球的核心离子进行核磁共振应用以及核辐射检测。通过系统的最终改进，温度降低到近1.1K。温度和机械强度的稳定性是主要的可以保证的因素。目前我们对这样一个系统的完成感到满意。正在进行的实验是关于收集和捕获，以实现光谱学的最终目标。该系统已在RCNP和RIKEN使用。探测器系统已在京都大学串联实验室进行了测试。该研究已在海外和日本的会议和研讨会上进行了介绍。中性成分的奇特行为有待解决，我们认为，关键就在我们手中。这项研究将进一步发展到超流氦中原子和离子的运动。

项目成果

N.Takahashi,et.al.: "Radioactive Core Ions of Microclusters, "Snowballs" in Superfluid Helium" Hyperfine Interactions. 103. 351-358 (1996)

N.Takahashi 等人：“微团簇的放射性核心离子，超流氦中的“雪球””超精细相互作用。

N.Takahashi et al.: "Radioactive Core Ions of Microclusters,"Snowballs"in Superfluid Helium" Hyperfine Interaction. 103. 351-358 (1996)

N.Takahashi 等人：“微团簇的放射性核心离子，超流氦中的“雪球””超精细相互作用。

N.Takahashi and T.Shimoda: "Physis of Snowball -Impurity Ions in Superfluid Helium-" in Nucleon Hadron Many Body System, Oxford Press. (To appear).

N.Takahashi 和 T.Shimoda：“雪球物理 - 超流氦中的杂质离子 -”，核子强子多体系统，牛津出版社。

N.Takahashi, T.Shimoda, Y.Fujita, H.Miyatake, Y.Mizoi, H.Kobayashi, M.Sasaki, T.Shirakura: "Radioactive Core Ions of Microclusters, "Snowballs" in Superfluid Helium" Hyperfine Interactions. 103. 351-358 (1996)

N.Takahashi、T.Shimoda、Y.Fujita、H.Miyatake、Y.Mizoi、H.Kobayashi、M.Sasaki、T.Shirakura：“微团簇的放射性核心离子，超流氦中的“雪球””超精细相互作用。

N.Takahashi et al.: "Physis of Snowball-Impurity Ions in Superfluid Helium-" Nucleon Hadron Many Body System,Oxford Press.

N.Takahashi 等人：“超流氦中的雪球杂质离子的物理学”核子强子多体系统，牛津出版社。