|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|1881345||1533452||2006||4 صفحه PDF||سفارش دهید||دانلود رایگان|
In growth zones of synthetic quartz samples, BTL (blue-thermoluminescence) intensities were found to gradually decrease with Al-impurity concentrations beyond 13 ppm, except for -X-X zones. This tendency suggests the relevance of other impurities, which were identified by infrared (IR) spectrometry. In the IR spectrum, +X+X zones indicated a negative relationship between BTL and Al–OH absorbance, whereas the -X-X zones showed extremely weak BTL and high Al–OH absorbance. On the basis of low-temperature measurements we suggest that hydrogen radicals and other radicals due to OH or water molecule impurities cause the elimination of BTL-centers and that the BTL sensitivity of quartz at environmental temperature is influenced not only by Al-impurities, but also by OH groups and other types of center.
Journal: Radiation Measurements - Volume 41, Issues 7–8, August–September 2006, Pages 809–812