The effect of water vapor and bulk temperature on positive ion emission from wide bandgap single crystals during exposure to 248 nm excimer laser radiation

We investigate the effect of low partial pressures of water vapor and bulk temperature on laser-induced positive ion emission from cleaved, single-crystal sodium nitrate and sodium chloride. Both materials yield more intense Na + emission in the presence of water vapor (P H 2 O ∼1×10 −5 Pa) than sam...

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Bibliographic Details
Published in:Applied surface science 2002, Vol.197, p.83-89
Main Authors: Nwe, K.H, Langford, S.C, Dickinson, J.T
Format: Article
Language:English
Subjects:
Ion emission
Sodium chloride
Sodium nitrate
Water vapor
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Summary:We investigate the effect of low partial pressures of water vapor and bulk temperature on laser-induced positive ion emission from cleaved, single-crystal sodium nitrate and sodium chloride. Both materials yield more intense Na + emission in the presence of water vapor (P H 2 O ∼1×10 −5 Pa) than samples irradiated under UHV conditions ( P total
ISSN:0169-4332
1873-5584
DOI:10.1016/S0169-4332(02)00308-2