Damping effects in Penning trap mass spectrometry

被引：16
|
作者：
George, S. [1 ,2 ]
Blaum, K. [2 ,3 ]
Block, M. [4 ]
Breitenfeldt, M. [5 ]
Dworschak, M. [1 ,4 ]
Herfurth, F. [4 ]
Herlert, A. [6 ]
Kowalska, M. [2 ,6 ]
Kretzschmar, M. [1 ]
Ramirez, E. Minaya [4 ]
Neidherr, D. [1 ]
Schwarz, S. [7 ]
Schweikhard, L. [5 ]
机构：
[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[3] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany
[4] GSI Helmholtzzentrum Schwerionenforsch Darmstadt, D-64291 Darmstadt, Germany
[5] Ernst Moritz Arndt Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany
[6] CERN, Dept Phys, CH-1211 Geneva 23, Switzerland
[7] Michigan State Univ, NSCL, E Lansing, MI 48824 USA
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2011年 / 299卷 / 2-3期
关键词：
Penning trap; Ion motion; Mass spectrometry; TRUE CYCLOTRON FREQUENCY; RAMSEY METHOD; ION MOTION; ACCURACY; ISOLTRAP; PHYSICS; EXCITATION; PARTICLES; RESONANCE; ELECTRON;
D O I：
10.1016/j.ijms.2010.09.030
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：
Collisions of ions with residual gas atoms in a Penning trap can have a strong influence on the trajectories of the ions, depending on the atom species and the gas pressure. We report on investigations of damping effects in time-of-flight ion-cyclotron resonance mass spectrometry with the Penning trap mass spectrometers ISOLTRAP at ISOLDE/CERN (Geneva, Switzerland) and SHIPTRAP at GSI (Darmstadt, Germany). The work focuses on the interconversion of the magnetron and cyclotron motional modes, in particular the modification of the resonance profiles for quadrupolar excitation due to the damping effect of the residual gas. Extensive experiments have been performed with standard and Ramsey excitation schemes. The results are in good agreement with predictions obtained by analytical continuation of the formulae for the undamped case. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：102 / 112
页数：11
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