霍利菲尔德放射性离子束设施的激光离子源开发。

Laser ion source development at Holifield Radioactive Ion Beam Facility.

作者信息

Liu Y, Gottwald T, Havener C C, Howe J Y, Kiggans J, Mattolat C, Vane C R, Wendt K, Beene J R

机构信息

Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

出版信息

Rev Sci Instrum. 2012 Feb;83(2):02A904. doi: 10.1063/1.3662476.

DOI:10.1063/1.3662476

PMID:22380245

Abstract

This report describes the efforts made to develop a resonant-ionization laser ion source based on tunable Ti:sapphire lasers for nuclear physics and astrophysics research at Holifield Radioactive Ion Beam Facility. Three Ti:sapphire lasers have been upgraded with individual pump lasers to eliminate laser power losses due to synchronization delays. Ionization schemes for 14 elements have been obtained. Off-line studies show that the overall efficiency of the laser ion source can be as high as 40%. TaC surface coatings have been investigated for minimizing surface and bulk trapping of the atoms of interest.

摘要

本报告描述了为在霍利菲尔德放射性离子束设施开展核物理和天体物理研究，基于可调谐钛宝石激光器开发共振电离激光离子源所做的努力。三台钛宝石激光器已通过单独的泵浦激光器进行了升级，以消除由于同步延迟导致的激光功率损失。已获得14种元素的电离方案。离线研究表明，激光离子源的整体效率可高达40%。已对碳化钽表面涂层进行了研究，以尽量减少感兴趣原子在表面和体内的捕获。