Numerical simulations of kinetic ion temperature in a cryogenic linear multipole trap

被引：64

作者：

Asvany, Oskar ^{[1
]}

Schlemmer, Stephan ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2009年 / 279卷 / 2-3期

关键词：

Multipole ion trap; 22-Pole trap; Numerical simulation; Ion temperature; Buffer gas cooling; SPECTROSCOPY; COLLISIONS; H-3(+); CLOUD;

D O I：

10.1016/j.ijms.2008.10.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

This work presents numerical simulations of the kinetic temperature of ions stored in a linear multipole RF trap (22-pole trap) under the influence of elastic collisions with buffer gas. Small distortions, as for example those caused by the trapping endelectrodes, space charges, or noise on the RF signal, can be included into the model. The dependence of the resultant ion temperature on all storage parameters is systematically investigated. In particular, it is found that an unfavourable ion-to-neutral mass ratio and high trapping endelectrode voltages can lead to ion heating far above the trap temperature. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：147 / 155

页数：9

共 31 条

[1] BUFFER GAS-COOLING OF IONS STORED IN AN RF TRAP - COMPUTED PROPERTIES OF THE IONIC CLOUD [J].