摘要
双极晶体管经中子辐照后会引起直流增益退化,在109~1016cm-2的注量范围内,其直流增益倒数变化与辐照中子注量呈线性关系。对直流增益退化的双极晶体管进行高温退火,能使受到辐射损伤的双极晶体管性能恢复。鉴于此,将双极晶体管进行逆向工程应用,制作成中子注量探测器,经标定后,可实现对中子注量的监测。对探测器的装配结构进行设计后,依托中国工程物理研究院快中子脉冲堆(CFBR-Ⅱ),在1012~1013cm-2的注量范围对3DK2222A型探测器和在1013cm-2的注量范围对3DG121C型探测器进行标定。在得到探测器损伤常数K的分散性存在较小和较大的两种情况下,确定了分散性较小时的有效取值和应用方法,以及在分散性较大时,采取标定的损伤常数K只能应用在同只探测器上的方案,并通过高温退火实验证实了该方案的可行性。
The DC gain of bipolar transistor will degenerate after neutron irradiation. In the range of flux of 10^9-10^16; cm^-2 ,the reciprocal change of DC gain is linearly related to the neutron flux. The high temperature annealing of the bipolar transistor with DC gain degradation can restore the performance of the bipolar transistor which has been damaged by radiation. In view of this, the bipolar transistor was used in reverse engineering, and the neutron flux detector was fabricated. After calibration, the neutron flux could be monitored. After designing the assembly structure of the detector and relying on the CFBR Ⅱ reactor, the 3DK2222A detector was calibrated in the flux range of 10^12-10^13cm^-2. The 3DG121C detector is calibrated in the flux range of 1on method of 0^13 cm^-2. The dispersion of the damage constant K of the detector is obtained as smaller or larger, the effective value and appli catithe smaller dispersion are determined, and in cases of larger dispersion, the calibrated damage constant K can only be applied to the same detector, and the feasibility of the scheme is proved by high tempcerature annealing experiment.
作者
冯加明
邹德慧
范晓强
葛良全
吴琨霖
罗军益
孙文清
艾自辉
Feng Jiaming;Zou Dehui;Fan Xiaoqiang;Ge Liangquany;Wu Kunlin;Luo Juny;Sun Wenqing;Ai Zihui(Institute of Nuclear Physics and Chemistry,CAEP,Mianyang 621900,China;Institute of Nuclear Technology and Automation Engineering,Chengdu University of Technology Chengdu 610000,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2018年第9期154-159,共6页
High Power Laser and Particle Beams
基金
国家自然科学基金青年基金项目(11605169)
关键词
双极晶体管
中子注量探测器
损伤常数
高温退火
标定技术
bipolar transistor
neutron fluencc detector
damage constant
high temperature annealing
calibrationtechnique
