【摘要】 探测慢中子常用的三氟化硼（BF₃）正比计数管,其主要缺点是:脉冲幅度较低,应用温度范围较窄,抗γ本底辐射能力低（γ辐射最大本底一般不超过100R/hr）。自L.Colli与U.Facchini在1952年指出可以在电晕放电的本底上记录强电离粒子以来,数种电晕放电慢中子计数管已投入了应用。我厂也研制成功J701Z型电晕放电慢中子计数管（简称“电晕管”）。电晕管具有脉冲幅度高（可达数百mV）,坪区范围宽（大于2kV）,寿命长（几乎无限）,热稳定性高（玻壳管可达200℃,金属陶瓷管可达300℃）,在强γ本底辐射下工作稳定等优点。可应用于反应堆工程、石油勘探中的中子测井及中子测水分等慢中子测量仪器中。更多还原

【Abstract】 The principle, structure and characteristic of a thermal neutron counter working in the corona discharge region are described. The influence of technology and operating conditions on the characteristics of the counter has been experimentally studied-The counter possesses such interesting advantages as lower operating voltage, wider length of plateau, higher pulse amplitude, the stability of heat, the applicability under strong radioactive y background and a longer life.更多还原