用于飞行时间二次离子质谱应用的C(60)等离子体离子源的研制。

Development of C(60) plasma ion source for time-of-flight secondary ion mass spectrometry applications.

作者信息

Ji Qing, Chen Ye, Ji Lili, Hahto Sami, Leung Ka-Ngo, Lee Tae Geol, Moon Dae Won

机构信息

Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA.

出版信息

Rev Sci Instrum. 2008 Feb;79(2 Pt 2):02B309. doi: 10.1063/1.2804912.

DOI:10.1063/1.2804912

PMID:18315175

Abstract

Initial data from a multicusp ion source developed for buckminsterfullerene (C(60)) cluster ion production are reported in this article. A C(60)(+) beam current of 425 nA and a C(60)(-) beam current of 200 nA are obtainable in continuous mode. Compared to prior work using electron impact ionization, the multicusp ion source provides at least two orders of magnitude increase in the extractable C(60)(+) beam current. Mass spectra for both positive and negative bismuth cluster ions generated by the multicusp ion source are also included.

摘要

本文报道了一种为生产巴克敏斯特富勒烯（C(60)）团簇离子而开发的多尖离子源的初始数据。在连续模式下可获得425 nA的C(60)(+)束流和200 nA的C(60)(-)束流。与先前使用电子碰撞电离的工作相比，多尖离子源可提取的C(60)(+)束流至少增加了两个数量级。文中还包括了由多尖离子源产生的正负铋团簇离子的质谱。