探究多丝正比计数器工作气体压强变化对α、β表面粒子发射率测量的影响

Probe into the influence of working gas pressure change on multi wire proportional counterα、βInfluence of surface particle emissivity measurement

讨论工作气压改变对α、β表面粒子发射率测量情况形成的影响,具体操作是在发射率装置上调整多丝正比计数器工作气压,测量α、β这两类粒子的实际发射率,基于阈值外推修正漏计数率。统计发现,工作气压50~180kP范围变动时,即便是在实验不确定度范畴中,差异化气压条件下α、β表面粒子的发射率测量值维持一致,建模的仿真模拟结果和试验最后所得结果相吻合。

Discuss the effect of working air pressure change onα、βThe specific operation is to adjust the working pressure of multi wire proportional counter on the emissivity device to measure the influence of surface particle emissivity measurementα、βThe actual emissivity of these two kinds of particles is modified by threshold extrapolation.Statistics show that when the working pressure changes in the range of 50~180kp,even in the range of experimental uncertainty,under the condition of differential pressureα、βThe measured emissivity of surface particles is consistent,and the modeling simulation results are consistent with the final experimental results.