摘要
轨道中子管在工作过程中产生的次级电子在管内高压作用下形成电子逆流，导致中子管的功耗增加，中子产额降低，中子管整体性能明显下降。本文概述了抑制中子管内次级电子的方法，对利用永磁铁抑制中子管内次级电子进行实验研究，结果表明利用永磁铁能有效抑制中子管内产生的次级电子。
Secondary electron in neutron tube can affect the production of neutron very much. This paper summarize the means of disabl the secondary electron. We have studied the mean by experiments .In Orbital neutron tube ,The secondary electrons by high voltage formed electronic adverse current, lead to increased power consumption of neutron tube, the neutron yield decreases significantly decreased the overall performance of the neutron tube. This article summarizes the inhibition method of secondary electrons within the orbital neutron tube, and the inhibition method to secondary electrons use of permanent magnet in the neutron tube prove through the experiment, the results show that the use of permanent magnets can effectively inhibit secondary electrons.
基金
湘财教指（2004）50号（No.04c527）资助
关键词
电子
中子
离子
中子管
束流
Electron Neutron Ion Neutron tube Ion current
