ZnWO4和掺杂ZnWO4光谱及衰减时间的研究
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O734

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STUDY ON SCINTILLATION DECAY TIME AND SPECTRA OF PURE AND DOPED ZnWO_4 CRYSTALS
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    摘要:

    采用阴极射线激发和紫外激发研究了ZnWO_4和各种不同掺杂ZnWO_4晶体常温下的激发谱和发射谱,并用单光子计数法测量其衰减时间。得到的激发谱存在4个峰值,计算机解谱得到发射谱主要包含3个发射带。这表明纯ZnWO_4和各种掺杂ZnWO_4晶体有类似的激发谱和发射谱,掺杂只改变峰值位置及各峰的相对强度,还可能增加衰减时间中的快成分。

    Abstract:

    Using excitations by cathode-ray and ultraviolet radiation, the excitation and emission spectra of pure and doped ZnWO_4 with various dopants at room temperature are studied. The scintillation decay times are also measured for the above crystals using the single photon counting technique. It can be seen that there are four peaks in the excitation spectra, and the emission spectra contain three emission bands, known by spectra decomposition. The results show that the excitationand emission spectra of pure and doped ZnWO_4 are similar, Doping only changes the positions and relative intensities of the peaks. Analysis also shows that there are four decay times in pure and doped ZnWO_4 crystals. It seems thai the fast component may be increased by doping.

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金译宸 李成基. ZnWO4和掺杂ZnWO4光谱及衰减时间的研究[J].红外与毫米波学报,1991,10(1):73~79]. JIN ZECHEN, ZHOU YADONG, CHEN GANG, ZHANG YONGHONG, YIN RUIHUA, ZENG CHUNGUANG. STUDY ON SCINTILLATION DECAY TIME AND SPECTRA OF PURE AND DOPED ZnWO_4 CRYSTALS[J]. J. Infrared Millim. Waves,1991,10(1):73~79.]

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