Resonance and ionisation potentials for electrons in cadmium vapor

J. Tate, P. D. Foote
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引用次数: 1

Abstract

The phenomena connected with the passage of electrons through mercury vapor have been fairly completely investigated. Franck and Hertz ^ have shown that when the velocity of the electrons is less than that attained in falling through 4.9 volts there is no loss of energy at impact with a mercury atom. After falling through a difference in potential of 4.9 volts, however, the electrons are capable of transferring all of their kinetic energy to the mercury atom. The energy absorbed by the atom under these conditions is emitted as radiant energy of the single wave length, X = 2536.72A. It was at first thought that this radiation of light was the result of a recombination with the atom of an electron which had been removed from it by the energy of impact. That
镉蒸气中电子的共振和电离电位
与电子通过汞蒸气有关的现象已经得到了相当彻底的研究。弗兰克和赫兹已经证明,当电子的速度小于以4.9伏特的速度下落时,与汞原子碰撞时没有能量损失。然而,在通过4.9伏特的电位差后,电子能够将其所有的动能传递给汞原子。在这些条件下,原子所吸收的能量以单个波长X = 2536.72A的辐射能发射出去。起初,人们认为这种光的辐射是由于原子被撞击的能量带走的电子与原子重新结合的结果。那
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