Excitation and High-Temperature Absorption of KCl: Tl
Excitation and High-Temperature Absorption of KCl: Tl
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KCl: Tl 的激发和高温吸收
DOI：
10.1103/physrev.119.962
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发表时间：
1960
期刊：
影响因子：
--
通讯作者：
D. A. Patterson
中科院分区：
文献类型：
--
作者：
D. A. Patterson
在铊浓度范围很广的KCl晶体上进行了光学测量。在560 ℃范围内进行了吸收测量，在液氮温度至100 ℃范围内测量了发光的激发光谱。这些测量，结合早期的工作，导致的结论是，在KCl：Tl至少有七个带：三个在”A”带区域和两个在”B”和”C”带区域。没有发现以前报道的高温下C带向B带的大位移。值得注意的是，添加少量的Sr到KCl移动的基本吸收边缘到短波长。
Optical measurements have been made on crystals of KCl with a wide range of thallium concentrations. Absorption measurements have been made up to 560 C and excitation spectra for luminescence have been measured from liquid nitrogen temperature to 100 C. These measurements, in conjunction with earlier work, lead to the conclusion that there are at least seven bands in KCl: Tl: three in the" A" band region and two each in the" B" and" C" band regions. The large shift from" C" band to" B" band at high temperatures which has been previously reported was not found here. It is noted that the addition of small amounts of Sr to KCl shifts the fundamental absorption edge to short wavelengths.