A PLASMA DESORPTION TIME-OF-FLIGHT MASS-SPECTROMETER WITH A SINGLE-STAGE ION MIRROR - IMPROVED RESOLUTION AND CALIBRATION PROCEDURE

被引：33

作者：

BRINKMALM, G ^{[1
]}

HAKANSSON, P ^{[1
]}

KJELLBERG, J ^{[1
]}

DEMIREV, P ^{[1
]}

SUNDQVIST, BUR ^{[1
]}

ENS, W ^{[1
]}

机构：

[1] UNIV MANITOBA,DEPT PHYS,WINNIPEG R3T 2N2,MANITOBA,CANADA

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1992年 / 114卷 / 03期

关键词：

PLASMA DESORPTION MASS SPECTROMETRY; ELECTROSTATIC ION MIRROR; MASS RESOLUTION; CALIBRATION PROCEDURE; METASTABLE DECAY;

D O I：

10.1016/0168-1176(92)80035-Y

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：

A first order electrostatic ion mirror has been constructed and mounted on a time-of-flight spectrometer coupled to the Uppsala EN-tandem accelerator at The Svedberg Laboratory. In electronic sputtering of CsBr with 72 MeV I-127 ions a highest mass resolution around 10 500 at a full-width at half maximum for the cluster ions (CsBr)2Cs+ has been obtained. The resolution for organic molecules is somewhat lower than this value but still significantly better than in a linear system. The mirror also provides great simplification of the calibration procedure and an improvement in mass accuracy compared with a linear spectrometer. For stable ions, and with the help of an einzel lens. the transmission approaches 100% in the mirror. The mirror is equipped with two stop detectors which make it possible to study the decay of metastable ions.

引用

页码：183 / 207

页数：25

共 23 条

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