文章信息/Info

Title:

Melt Method and Its Characteristics for the Growth of Organic Crystal Scintillator

作者:

 劉秀華; 譚昭怡; 袁永剛; 藺金賢

中國工程物理研究院核物理與化學研究所

Author(s):

 LIU Xiuhua;  TAN Zhaoyi;  YUAN Yonggang;  LIN Jinxian

Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics

關鍵詞:

閃爍體; 有機晶體; 熔體法; 生長; 布里奇曼技術; 恰克拉斯基技術

Keywords:

scintillator;  organic crystal;  melt method;  growth;  Bridgman technique;  Czochralski technique

DOI:

10.7502/j.issn.1674-3962.2017.09.10

文獻標志碼:

A

摘要:

閃爍體探測器是最常用的輻射探測器之一，閃爍體是閃爍體探測器的核心探測材料。有機晶體閃爍體具有較高的發光效率，是閃爍體中最有優勢的輻射探測材料，但是由于有機材料在熔點溫度下具有較高的蒸汽壓、熱不穩定性和較差的熱導率，導致有機晶體閃爍體的制備條件非�？量�。有機晶體的制備方法主要是熔體法和溶液法，對使用最廣泛的熔體法進行了綜述，總結了熔體法中布里奇曼技術和恰克拉斯基技術的特點、所用的典型的結晶器結構，分析了各方法中影響有機晶體閃爍體生長的影響因素。

Abstract:

Scintillator detector is a kind of the radiation detector in common use, and scintillator is the core part in scintillator detector. Organic crystal scintillator is the most preponderant radiation detecting material for its high irradiance efficiency. But because of the high vapor pressure, thermal instability and poor thermal conductivity of organic materials at melting temperature, the preparation conditions of organic crystal scintillator are very rigorous. The main preparation methods of organic crystal are melt methods and solution methods. The most frequently used melt methods include Bridgman technique and Czochralski technique. In this paper, the characteristics, configurations of typical crystal growth equipments and factors influencing the growing of organic crystal scintillator of the two techniques are summarized.