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Electric field assisted thermal desorption ionization using an infrared laser
Author(s) -
Matsushita Fumiko,
Fukasawa Hiroko,
Sato Tetsuya,
Kudaka Ichiro,
Hiraoka Kenzo
Publication year - 1999
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19991215)13:23<2428::aid-rcm793>3.0.co;2-u
Subject(s) - chemistry , ion , tungsten , electric field , field desorption , ionization , soft laser desorption , thermal ionization , analytical chemistry (journal) , laser , infrared , ion source , irradiation , atomic physics , desorption , electron ionization , optics , matrix assisted laser desorption/ionization , adsorption , physics , organic chemistry , quantum mechanics , chromatography , nuclear physics
A new technique has been developed for the formation of gas‐phase electrons and ions by electric field assisted thermal desorption ionization at atmospheric pressure. Experiments were carried out using a sharp tungsten wire tip coated with a thin solid sample film which was irradiated by a 10.6 µm infrared laser. By applying a strong electric field on the laser‐irradiated tungsten wire tip, abundant ions such as alkali ions, halide ions, and also multiply charged negative ions S 2 O 6 2− and S 2 O 8 2− , were formed. Copyright © 1999 John Wiley & Sons, Ltd.