2009
DOI: 10.2465/jmps.090620a
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Effect of impurities on cathodoluminescence of tridymite and cristobalite

Abstract: Cristobalite and tridymite in andesite and obsidian exhibit bright blue emissions in color cathodoluminescence (CL) images. CL spectra of cristobalite and tridymite show emission bands at 400 and 430 nm, respectively. Their CL intensity decreases with an increase in the electron irradiation time, similar to the short -lived blue luminescence reported in hydrothermal quartz. The reduction rate of the CL intensity of hydrothermal quartz is small as compared to cristobalite and tridymite. The initial CL intensity… Show more

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Cited by 4 publications
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“…2b) revealed a broad peak at ~470 nm in the blue region, which is identical to the previously reported CL characteristic of cristobalite (Kayama et al, 2009). Pseudo-color imaging (Fig.…”
Section: A C C E P T E D I N J M P S P R E -P R O O Fsupporting
confidence: 87%
“…2b) revealed a broad peak at ~470 nm in the blue region, which is identical to the previously reported CL characteristic of cristobalite (Kayama et al, 2009). Pseudo-color imaging (Fig.…”
Section: A C C E P T E D I N J M P S P R E -P R O O Fsupporting
confidence: 87%