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Laser ablation of ternary As‐S‐Se glasses and time‐of‐flight mass spectrometric study
Author(s) -
Pangavhane Sachinkumar Dagurao,
Houška Jan,
Wágner Tomáš,
Pavlišta Martin,
Janča Jan,
Havel Josef
Publication year - 2009
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.4362
Subject(s) - chemistry , ternary operation , chalcogenide , stoichiometry , chalcogen , analytical chemistry (journal) , laser ablation , laser , mass spectrometry , time of flight mass spectrometry , mass spectrum , ion , pulsed laser deposition , plasma , ionization , crystallography , optics , physics , organic chemistry , chromatography , quantum mechanics , computer science , programming language
Ternary chalcogenide As‐S‐Se glasses, important for optics, computers, material science and technological applications, are often made by pulsed laser deposition (PLD) technology but the plasma composition formed during the process is mostly unknown. Therefore, the formation of clusters in a plasma plume from different glasses was followed by laser desorption ionization (LDI) or laser ablation (LA) time‐of‐flight mass spectrometry (TOF MS) in positive and negative ion modes. The LA of glasses of different composition leads to the formation of a number of binary As p S q , As p Se r and ternary As p S q Se r singly charged clusters. Series of clusters with the ratio As:chalcogen = 3:3 (As 3 S 3 + , As 3 S 2 Se + , As 3 SSe 2 + ), 3:4 (As 3 S 4 + , As 3 S 3 Se + , As 3 S 2 Se 2 + , As 3 SSe 3 + , As 3 Se 4 + ), 3:1 (As 3 S + , As 3 Se + ), and 3:2 (As 3 S 2 + , As 3 SSe + , As 3 Se 2 + ), formed from both bulk and PLD‐deposited nano‐layer glass, were detected. The stoichiometry of the As p S q Se r clusters was determined via isotopic envelope analysis and computer modeling. The structure of the clusters is discussed. Copyright © 2009 John Wiley & Sons, Ltd.