磁控管测量比荷公式的证法探讨

The Probe on the Proof About the Formula of e/m_e with Magnetic Control Tube

比荷e/me是电子的一个重要参数,磁控管法是测量电子比荷的一种经典方法。文献[1]中用“二分之三次方定律”证明比荷公式有些欠妥。本文给出电子比荷公式的一种严格证明和一种非严格证法,并分析“二分之三次方定律”不能适用的原因。

e/me is an important electrical premature. The use of magnetic control tube is a classical way to measure electrical e/me, The proof is not very good which is about the formula of e/me with the law of the three-second power in No. 1 document. This essay providea a strict proof and a simplified one,and also presents a detailed analysis of the reason why the law of the three-second power is not suitable.