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国产的一种典型的SZJ—2A型BF_3慢中子正比计数管,允许γ场强为2×10~4μR/s。我们改进了测试方法,使该管抗γ性能提高到6.5×10~4μR/s,并延长了计数管的使用寿命。
Domestic a typical SZJ-2A type BF_3 slow neutron proportional counter tube, allowing γ field strength of 2 × 10 ~ 4μR / s. We have improved the test method to improve the γ-performance of the tube to 6.5 × 10 ~ 4μR / s, and extend the life of the counter tube.