【作者】 张明睿； 景士伟； 杨璐； 白金昌； 苏鸿彦； 乔双； 严长春；

【Author】 ZHANG Ming-ri~1,JING Shi-wei~1,YANG Lu~1,BAI Jin-chang~1,SU Hong-yan~2,QIAO Shuang~1, YAN Chang-chun~1 (1.Department of Physics,Northeast Normal University,Changchun,130024; 2.Department of Chemistry,Northeast Normal University,Changchun,130024)

【机构】 东北师范大学物理学院； 东北师范大学化学学院；

【摘要】 影响中子产额的因素有很多。由于制作工艺不能完全相同,即使是同一型号的两支中子管,在同样参数下工作时的中子产额往往也是有区别的。此外,中子管产额是通过中子监测仪来监测和表征,中子监测仪自身性能的改变也会影响到其表征的产额情况。本文以东北师范大学自主研制的自成靶陶瓷中子管和ZFD-1型中子发生器控制台为例,对中子的产生和接收装置(包括中子源,监测台和控制台)进行了简要说明,研究了在不同的加速高压下(D-D)型中子管产生的中子在中子管中心线上的轴向分布情况和影响~3He气体中子监测仪接收性能的一些主要因素。最后根据记录的实验数据,作出拟合图线并给出相应的拟合函数关系式。从而可以对(D-D)型中子管产生的中子数量在中心线轴向上的分布进行标定,以便于开展实际应用。更多还原

【Abstract】 Neutron yield is affected by many factors,and even two neutron tubes at the same type,which are working under the same parameters,often have different neutron yield because the production process can not be kept exactly the same. What’s more,the number of neutron yield are often monitored and characterized by neutron monitor,and the distribution of the number ot neutron yield will change if the performance of its monitor has changed.Take Model ZFD-1 Neutron Generator developed by Northeast Normal University as an example,a brief description of the neutron generation device and the receiving device.The distribution of neutrons in the neutron tube axial center line under several suitable accelerator voltages and the key factor that influnced the receiving performance of the ~3He gas-based neutron monitor were also studied in the experiment.Some fitting curves and its fitting function relationship were given by processing the experimental datas. So that we can calibrate the yield of this(D-D) reaction neutron tube in the neutron tube axial center line in order to carry out some practical applications more conveniently.更多还原