[en] Aspects of direct laser desorption/ionisation have been studied for three molecules, aminotriazole (positive ion), dinoterb and ioxynil (negative ion). The samples are deposited on metallic substrates, and a nitrogen laser is used for desorption/ionisation; ion yields are measured with a time-of-flight mass spectrometer, Previous work had shown that ion yields can strongly vary from one substrate to another, and that this variation does not reflect the (calculated) metal surface temperatures. New results obtained in this work indicate that the desorption/ionisation mechanism is linked to the physical state of the substrate surface. Copyright (C) 1999 John Wiley & Sons, Ltd.
Disciplines :
Physics
Author, co-author :
Benazouz, M.
Hakim, B.
Debrun, J. L.
Strivay, David ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie - Centre européen en archéométrie
Weber, Georges ; Université de Liège - ULiège > Centre européen en archéométrie - Physique nucléaire, atomique et spectroscopie
Language :
English
Title :
Study of the mechanism of direct laser desorption/ionisation for some small organic molecules (M < 400 daltons)
Publication date :
1999
Journal title :
Rapid Communications in Mass Spectrometry
ISSN :
0951-4198
eISSN :
1097-0231
Publisher :
John Wiley & Sons, Inc, Chichester, United Kingdom
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Benazouz M, Hakim B, Debrun JL. Int. J. Mass Spectrom. 1998; 177: 217.
Benazouz M, Hakim B, Debrun JL. Rapid Commun. Mass Spectrom. 1998; 12: 1018.
Schueler B. Microsc. Microanal. Microstruct 1992; 3: 1.
Amsel G, Samuel D. Anal. Chem. 1967; 39: 1689.
Amsel G, David D. Revue de Physique Appliquée 1969; 4: 383.
Morin-Allory L. ICOA, Department of Theoretical Chemistry, unpublished results.
Sadeghi M, Vertes A. Appl. Surf. Sci. 1998; 127/129: 226.
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