丰中子超重核研究原理性谱仪气体单元低温纯化系统的研制
Development of Gas Cell Cryogenic Purification System Operating at Prototype Spectrometer for Neutron-rich Superheavy Nuclei
李金海 1侯东升 1朱浩钒 1范锐 1徐新星 2周小红 2刘忠 1李朋杰 3王凯龙 3刘嘉健 3黄燃 3简豪 1高雨枫 1戴凡超 1查思贤 1常志芳 1覃淑炼 1孔成 1阎赫轩 1徐浩维 1尹国庆 4王沛 4张军辉 2何源 2王猛 2孙志宇 2胡正国 2徐瑚珊2
作者信息
- 1. 中国科学院近代物理研究所,兰州 730000;中国科学院大学核科学与技术学院,北京 100049
- 2. 中国科学院近代物理研究所,兰州 730000;中国科学院大学核科学与技术学院,北京 100049;先进能源科学与技术广东省实验室,广东惠州 516003
- 3. 中国科学院近代物理研究所,兰州 730000
- 4. 安徽万瑞冷电科技有限公司,合肥 230000
- 折叠
摘要
重锕系核弹靶组合的多核子转移反应可能是产生丰中子超重核的重要突破口,因此设计建造适用于多核子转移反应的丰中子超重核研究的原理性谱仪不仅可以为探索超重核稳定岛奠定技术、方法和装置基础,而且对研究多核子转移反应机制有重要意义.丰中子超重核研究原理性谱仪中的气体单元需要持续不断的高纯度氦气,以停阻多核子转移反应产物并将降能后的离子引出到后续的实验装置.主要介绍新研制的丰中子超重核研究原理性谱仪气体单元低温纯化系统,此系统主要为气体单元提供可循环的高纯度氦气.经实验测定,低温纯化系统可以将99％的氦气纯化到99.999％以上,结合化学纯化单元,纯化后的氦气满足气体单元对高纯度氦气的需求.
Abstract
Multinucleon transfer reactions involving heavy actinide projectile and target nuclei hold significant potential as a groundbreaking method to synthesize neutron-rich superheavy nuclei.Constructing a Prototype Spectrometer for Neutron-rich Superheavy Nuclei is highly desirable to establish the technical,methodological,and device foundation to explore the stability island in superheavy nuclei and to study the mechanism of multinucleon transfer reactions.The gas cell of the Prototype Spec-trometer for Neutron-rich Superheavy Nuclei requires a continuous supply of high-purity helium gas to stop the energetic ra-dioactive reaction products and to extract the energy-reduced ions to the subsequent experimental setup.The paper focuses on a newly developed Gas Cell Cryogenic Purification System operating at Prototype Spectrometer for Neutron-rich Superheavy Nuclei.This system is designed to provide recyclable and high-purity helium for the gas cell.With a series of tests,the cryo-genic purification system has been proven to be able to purify the 99％helium gas to 99.999％or higher,fulfilling the require-ments of the gas cell when used in conjunction with the chemical purification system.
关键词
多核子转移反应/气体单元/低温纯化系统/高纯度氦气Key words
multinucleon transfer reaction/gas cell/cryogenic purification system/high-purity helium引用本文复制引用
基金项目
中国科学院战略性先导科技专项(XDB34010300)
中国科学院改善科研条件专项(GSZXKYZB20220190)
国家自然科学基金资助项目(12022501)
国家自然科学基金资助项目(12105329)
出版年
2024
NETL
NSTL
万方数据