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Thermoluminescence of forsterite and fused quartz as a candidate for the extended red emission
Author(s) -
KOIKE C.,
CHIHARA H.,
KOIKE K.,
NAKAGAWA M.,
OKADA M.,
TSUCHIYAMA A.,
AOKI M.,
AWATA T.,
ATOBE K.
Publication year - 2002
Publication title -
meteoritics and planetary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 100
eISSN - 1945-5100
pISSN - 1086-9379
DOI - 10.1111/j.1945-5100.2002.tb00813.x
Subject(s) - forsterite , thermoluminescence , enstatite , irradiation , quartz , materials science , mineralogy , olivine , luminescence , analytical chemistry (journal) , geology , chemistry , astrobiology , chondrite , physics , meteorite , metallurgy , optoelectronics , nuclear physics , chromatography
— We investigated thermoluminescence of silicates that are of interest in the interstellar and circumstellar medium after irradiation by γ‐rays and fast neutrons. The silicates are forsterite, orthoenstatite, olivine, quartz, and crystalline silicon. The irradiated enstatite shows weak and broad peaks at 545 and 760 nm. In contrast, irradiated bulk and powder samples of forsterite show strong and broad peaks at 640–660 nm. Although thermoluminescence of bulk forsterite is very similar to the extended red emission (ERE) of the Red Rectangle nebula, irradiated powdered forsterite did not reveal any sharp emission features over the broad band. Further, we investigated the possibility of thermoluminescence of crystalline silicon and found that luminescence scarcely appears. It is emphasized that the prominent carrier of ERE is forsterite and fused quartz.