磁控法测定热发射电子的速率分布

Direct measurement on the speed distribution of thermoelectron using magnetron

利用磁控法直接测定了真空二极管中发射的热电子的速率分布,并证实了热电子的速率分布有别于麦克斯韦速率分布率.由于空间电荷效应的存在,在磁场较大的情况下数据与理论存在偏差.

We use magnetron to address the direct measurement on the speed distribution of the thermoelectron, and prove that the speed distribution of the thermoelectron does not obey the Maxwell law. However, due to the space charge effect, our data deviate from the theory in the large-magnetic-field regime.