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- W2034153729 abstract "New emissions in some thermoluminescing natural quartz are observed. It is found that short bursts of a few seconds of purple and violet lights are produced following the ususal greenish–blue upon quenching the quartz crystals and irradiating with relatively light doses of γ-rays. Quenching is done from 400°C to water at room temperature. The new emissions are emitted at 112 and 120°C and seem to be due to release of electrons trapped in extended defects (shown up by ESR) caused by quenching. Due to low enough energy of activation of trapped electrons (0.0332 and 0.0338 eV) causing these emissions, the latter are not produced if such crystals are stored for some time (≈ one month). On re-irradiation of the samples, the emissions can be reobtained.In einigen thermolumineszierenden naturlichen Quarzen werden neue Emissionen beobachtet. Es wird gefunden, das kurze Stosimpulse mit einigen Sekunden Dauer von purpurfarbigem und violettem Licht erzeugt werden, die dem gewohnlichen grunlich–blauem Licht nach Abschrecken der Quarzkristalle und Bestrahlung mit relativ schwachen Dosen von γ-Strahlung folgen. Das Abschrecken wird von 400°C in Wasser auf Zimmertemperatur durchgefuhrt. Die neuen Emissionen werden bei 112 und 120°C emittiert und scheinen durch die Befreiung von getrappten Elektronen in ausgedehnten durch die Abschreckung verursachten Defekten (nachgewiesen durch ESR) herzuruhren. Infolge der ausreichend niedrigen Aktivierungsenergie der getrappten Elektronen (0,0332 und 0,0338 eV), die diese Emissionen verursachen, werden die letzteren nicht erzeugt, wenn die Kristalle einige Zeit (≈ einen Monat) gelagert werden. Nach Bestrahlung der Proben lassen sich die Emissionen erneut beobachten." @default.
- W2034153729 created "2016-06-24" @default.
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- W2034153729 date "1985-09-16" @default.
- W2034153729 modified "2023-10-03" @default.
- W2034153729 title "On the Purple and Violet Light Emissions in Thermoluminescing Quartz" @default.
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