EVOLUTION OF AN ION CLOUD IN A FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE MASS-SPECTROMETER DURING SIGNAL-DETECTION - ITS INFLUENCE ON SPECTRAL-LINE SHAPE AND POSITION

被引:26
作者
NIKOLAEV, EN
MILUCHIHIN, NV
INOUE, M
机构
[1] UNIV ELECTROCOMMUN,DEPT APPL PHYS & CHEM,CHOFU,TOKYO 182,JAPAN
[2] RUSSIAN ACAD SCI,INST ENERGY PROBLEMS CHEM PHYS,MOSCOW 117829,RUSSIA
来源
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1995年 / 148卷 / 03期
关键词
EFFECTIVE FREQUENCY; FOURIER TRANSFORM MASS SPECTROMETRY; FREQUENCY DRIFT; INHOMOGENEOUS ELECTRIC FIELD; ION CYCLOTRON RESONANCE;
D O I
10.1016/0168-1176(95)04233-B
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
The factors responsible for temporal variation of the detected frequency in an FT ion cyclotron resonance (ICR) spectrometer are analysed. The time-dependent frequency behaviour is believed to be caused by a change in ion cloud configuration, the number of detected ions, and the ion cloud position in the electric field of the ICR cell. The spectral peak shape is calculated for an ensemble of non-interacting ions distributed over amplitudes of axial oscillations. The influence of the Coulomb interaction on the signal and the spectral peak shape is studied by a computer simulation using a highly parallel computer.
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页码:145 / 157
页数:13
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