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Alpha-irradiation effects in SiO (sub 2)

Robert Krickl, Lutz Nasdala, Jens Goetze, Dieter Grambole and Richard Wirth
Alpha-irradiation effects in SiO (sub 2)
European Journal of Mineralogy (August 2008) 20 (4): 517-522

Abstract

Natural and synthetic crystalline alpha -quartz, as well as synthetic SiO (sub 2) glass, were irradiated with different doses of 8.8 MeV He (super 2+) ions. The irradiation-induced alteration was characterised using Raman and cathodoluminescence (CL) spectroscopy, optical microscopy, transmission electron microscopy (TEM) and CL and electron microscope imaging. The initially dull bluish-violet CL colour of the two alpha -quartz samples was found to be transformed to bright yellow in the irradiated areas. The emission maximum was observed 45 mu m below the surface, which corresponds well with correlated helium trajectory lengths and defect density distribution. Both, total intensity and radial intensity distribution of the CL emission change with the irradiation dose. Observations suggest a nonlinear, approximately logarithmic increase of the CL intensity depending on the alpha dose. Significant broadening of Raman bands is only observed near the far end of helium trajectories. This broadening is not only caused by the structural radiation damage but also by strain between strongly and lowly damaged areas.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 20
Serial Issue: 4
Title: Alpha-irradiation effects in SiO (sub 2)
Affiliation: Universitaet Wien, Institut fuer Mineralogie und Kristallographie, Vienna, Australia
Pages: 517-522
Published: 200808
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 28
Accession Number: 2008-114900
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Technische Universitaet Bergakademie Freiberg, DEU, Federal Republic of GermanyForschungszentrum Dresden-Rossendorf, DEU, Federal Republic of GermanyGeoForschungsZentrum Potsdam, DEU, Federal Republic of Germany
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200843
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