长寿命BF_3慢中子正比计数管

LONG LIVED BF_3 PROPORTIONAL COUNTER

摘要: <正> 一、引言目前,同中子有关的测量中,仍然普遍地采用BF_3正比计数管。上海型BF_3管具有坪长、坪斜小、分辨率好、n对γ的脉冲幅度比大、搁置稳定等特点。作为探测中子的基础元件,1969年以来,它已在国内广泛地应用于国防、科研、防护等各个领域。由于BF_3气体

Abstract: The characteristics of BF_3 tubes (Model Shanghai) are described briefly. Theresolution and the output pulse amplitude of the J 424 Z--1--C tubes remainunchanged for neutron fluence up to several 10~(12) n/cm~2.