The effect of crystal fragmentation on the luminescence from pulse-irradiated H2O ice

Autor: D.F. Sangster, Colin G. Freeman, C.F. Vernon, M. G. Bakker, T. I. Quickenden
Rok vydání: 1988
Předmět:
Zdroj: International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry. 32:767-772
ISSN: 1359-0197
DOI: 10.1016/1359-0197(88)90166-x
Popis: The extent of crystal fragmentation in electron pulse-irradiated H2O ice does not affect the spectral distribution of the luminescence emitted by the ice, except in the case of the Balmer α-emission at 656 nm, which is reduced in intensity when the extent of ice fragmentation is increased. The luminescence intensity at 400 nm is sufficiently high for luminescence decay half-lives to be measured and these do not change with ice fragmentation. The effect of fragmentation on the Balmer α-intensity is explained by the trapping at dislocations of either exciton or electron precursors to the luminescence.
Databáze: OpenAIRE