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首页> 外文期刊>Indian Journal of Pure & Applied Physics >Thermoluminescence of X-ray irradiated pure and doped alumina powders
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Thermoluminescence of X-ray irradiated pure and doped alumina powders

机译：X射线辐照的纯铝和掺杂铝粉的热致发光

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摘要

Thermoluminescence (TL) and TL spectra of α-Al_2O_3 powders both pure as well as doped with transition metal ion impurities have been studied by X-ray irradiation at room temperature (27℃). With the incorporation of the impurities the TL outputs vary but no change in glow peak positions is noticed. While the TL emission for undoped α-Al_2O_3 powder occurred mainly in two wavelength regions 350 to 490 nm (Ⅰ) and 600 to 650 nm (Ⅲ), three broad emission bands have been observed for doped samples which contained in addition to the regions Ⅰ and Ⅲ an intermediate region Ⅱ extending from 500 to 610 nm. TL phenomena in α-Al_2O_3 are predominantly controlled by trace impurities and the glow peaks are associated with a distribution of trapped holes (0~-, 0°).
机译：在室温（27℃）下通过X射线研究了纯的和掺杂有过渡金属离子杂质的α-Al_2O_3粉末的热致发光（TL）和TL光谱。通过掺入杂质，TL输出会发生变化，但是辉光峰的位置没有变化。尽管未掺杂的α-Al_2O_3粉末的TL发射主要发生在350至490 nm（Ⅰ）和600至650 nm（Ⅲ）的两个波长区域，但除Ⅰ区外，掺杂样品还观察到了三个较宽的发射带。 Ⅲ是中间区Ⅱ，其波长范围为500至610nm。 α-Al_2O_3中的TL现象主要受痕量杂质控制，辉光峰与捕获空穴的分布（0〜-，0°）有关。

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