论文标题
在Triumf离子指南激光离子源的干净稀有同位素束的生产
Production of clean rare isotope beams at TRIUMF Ion guide laser ion source
论文作者
论文摘要
热腔谐振电离激光离子源（RILIS）提供了具有高电离效率和元素选择性电离的众多放射性离子束。然而，在热腔中，从表面离子化物质中提取的束中仍存在等速污染。已经实施了一个离子指导激光离子源（IG-LIS），使热同位素生产区域与激光电离体积分解。已经进行了许多IG-LIS运行，以提供无等应的放射性离子束进行实验。与热腔rilis相比，Ig-lis的强度损失仍然损失了50-100倍。 IG-LIS的操作参数正在优化，并且正在将设计改进实施到原型中，以实现强大而有效的在线操作。提出了最近的模拟离子光学仿真结果和IG-LI的持续开发状态。
Hot cavity resonant ionization laser ion sources (RILIS) provide a multitude of radioactive ion beams with high ionization efficiency and element selective ionization. However, in hot cavity RILIS there still remains isobaric contaminations in the extracted beam from surface ionized species. An ion guide-laser ion source (IG-LIS) has been implemented that decouples the hot isotope production region from the laser ionization volume. A number of IG-LIS runs have been conducted to provide isobar free radioactive ion beams for experiments. Isobar suppression of up to 106 has been achieved, however, IG-LIS still suffers from an intensity loss of 50-100X as compared to hot cavity RILIS. Operating parameters for IG-LIS are being optimized and design improvements are being implemented into the prototype for robust and efficient on-line operation. Recent SIMION ion optics simulation results and the ongoing development status of the IG-LIS are presented.
