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Time‐of‐flight mass spectrometry with a compact two‐stage electrostatic mirror: Metastable‐ion studies with high mass resolution and ion emission from thick insulators
Author(s) -
Brunelle A.,
DellaNegra S.,
Depauw J.,
Joret H.,
Le Beyec Y.
Publication year - 1991
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/rcm.1290050112
Subject(s) - metastability , chemistry , ion , resistor , voltage , mass spectrometry , atomic physics , resolution (logic) , time of flight , analytical chemistry (journal) , physics , organic chemistry , chromatography , quantum mechanics , artificial intelligence , computer science
A compact two‐grids mirror is described. Although analytical calculations and computer simulations are useful it is found that experimental adjustments of the mirror voltage and of the bias divider resistors are needed to achieve the optimum performance. The experimental procedure is given. It is shown that a second‐order time‐focusing mirror is appropriate for metastable‐ion studies with high mass resolution. Large variations of sample voltage can be compensated by the mirror. Thick insulators can be analysed.