Letter: The formation of ion packages with ultrashort duration in a laser ion source

被引：3
|
作者：
Sysoev, Alexander A. [1 ]
Karpov, Alexander V. [1 ]
Gracheva, Oksana I. [1 ]
机构：
[1] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
来源：
EUROPEAN JOURNAL OF MASS SPECTROMETRY | 2015年 / 21卷 / 02期
关键词：
laser ion source; TOF mass spectrometer; electrostatic analyzer; ion optics; reflector; time aberrations; aberration correction; resolution; laser plasma; FLIGHT MASS-SPECTROMETER; ELEMENTAL ANALYSIS; SOLIDS;
D O I：
10.1255/ejms.1372
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 new approach to the formation of ultrashort laser ion packages in the ion source of a time-of-flight (TOF) mass spectrometer for elemental analysis is described. This is achieved by installing a wedge-shaped reflector with special correcting plates. The reflector provides time and space focusing of the ion packages. Such time focusing allows the reduction of the ion package duration up to ins. The proposed approach allows more than an order of magnitude increase in the resolution of the laser TOF mass spectrometer with an axially symmetric electrostatic analyzer to 10,000-13,000. In this Letter the theoretical calculations justifying the proposed method are presented.
引用
收藏
页码：103 / 107
页数：5
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