Positive and negative ion emission from perfluorinated poly-ethers

Authors
Lourenco, JMC Carrapa, RT Teodoro, OMN Moutinho, AMC Gleeson, MA Los, J Kleyn, AW
Citation
Jmc. Lourenco et al., Positive and negative ion emission from perfluorinated poly-ethers, CHEM P LETT, 336(5-6), 2001, pp. 431-438
Citations number
33
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
336
Issue
5-6
Year of publication
2001
Pages
431 - 438
Database
ISI
SICI code
0009-2614(20010323)336:5-6<431:PANIEF>2.0.ZU;2-Y
Abstract
Positive and negative ion ejection in the mass range below 200 Dalton is ob served for perfluorinated poly-ether surfaces subjected to electron- and io n-beam irradiation. The exciting projectiles are Ar+ ions of 300 and 4000 e V and electrons of 3000 eV. The main positive ions found are fragments of C F: ions. Larger ions are found with lower probability. The main negative io n observed is F. The results show that the liquid-vacuum interface is forme d by CB groups from the polymer. (C) 2001 Elsevier Science B.V. All rights reserved.