Optical characteristics of TlBr crystals grown in various ambient
Optical characteristics of TlBr crystals grown in various ambient
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DOI：
10.1016/j.nima.2008.03.060
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发表时间：
2008-06
影响因子：
1.4
通讯作者：
I. S. Lisitsky;M. Kuznetsov;Yu. Sultanova
中科院分区：
文献类型：
--
作者：
I. S. Lisitsky;M. Kuznetsov;Yu. Sultanova
目前的TlBr探测器晶体的生长技术不能提供所需的质量。它的进一步发展需要大量的晶体特性的研究，在各种条件下生长，包括光学方法。测量了在真空、氩气和空气中用布里奇曼技术生长的TlBr晶体的光学特性。生长气氛对短波边缘光谱透射率和0.63μm波长的光散射有很大影响。测量结果证明，最小的突变边界短波传输和最大的光传播的特点，已在真空中生长的晶体。在空气中接收的晶体具有最好的光学特性。本文提出了大气对晶体光学特性影响的模型。
The present growth technology of TlBr detector crystals cannot provide the required quality. Its further development requires considerable studies of characteristics of the crystals, grown in various conditions, including optical methods. Optical characteristics were measured for TlBr crystals grown by the Bridgman technique in various ambient atmospheres: vacuum, Ar and air. The growth atmosphere had a profound influence on short-wave edge spectral transmission and on light scattering at a wave length of 0.63μm. The measurements prove that the least abrupt border short-wave transmission and the greatest light dissemination are characteristic of crystals which have been grown in vacuum. Crystals received in air have the best optical characteristics. A model of the influence of the atmosphere on the optical characteristics of crystals is presented.