X‐ray‐induced luminescence in crystalline SiO2 (original) (raw)
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Research Article| September 01 1983
Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078
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Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078
Search for other works by this author on:
Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078
Search for other works by this author on:
Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078
Search for other works by this author on:
J. Appl. Phys. 54, 5369–5375 (1983)
The x‐ray‐induced ‘‘blue’’ emission from commercially available, high‐quality synthetic quartz has been studied between 80 and 300 K. Three overlapping bands, each having a different quenching temperature, have been experimentally resolved in the as‐grown crystals. These bands peak at 440, 425, and 380 nm; their half‐widths are 0.64, 0.75, and 0.92 eV; and they thermally quench in the 120–160, 170–210, and 220–270 K regions, respectively. An intense electron irradiation at room temperature or an electrodiffusion (sweep) in a hydrogen atmosphere eliminates the band at 380 nm. Our results suggest that the 380‐nm band arises from recombination of an electron with a hole trapped adjacent to an alkali‐compensated aluminum ion (i.e., an Al–M+ center). The origins of the bands at 440 and 425 nm remain unknown. As an application of these results, a screening test is described which could assist quality control during selection of quartz bars for use in precision frequency control devices.
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© 1983 American Institute of Physics.
1983
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