From Leybold catalog, purchased from Klinger-Educational Products,112-19 14th Road,College Point, New York 11356, Ph718-461-1822
从Leybold目录购买，来自Klinger-Educational Products，地址：112-19 14街，College Point，纽约11356，电话：718-461-1822 |
When the accelerated electrons excite the electrons in neon to upper states, they de-excite in such a way as to produce a visible glow in the gas region in which the excitation is taking place. There are about ten excited levels in the range 18.3 to 19.5 eV. They de-excite by dropping to lower states at 16.57 and 16.79 eV. This energy difference gives light in the visible range. Since the accelerated electrons undergo inelastic collisions with the neon and are then accelerated again, they can undergo a series of such collisions if the accelerating voltage is high enough. Since the accelerating voltage from the Franck-Hertz console can reach about 80 volts, you can get up to four collisions. This can be seen under proper conditions as four bands of light from the de-excitation in the collison regions.
当加速的电子激发氖气中的电子跃迁到较高能级时，它们通过跃迁到较低能级的方式产生可见光 glow。在激发发生的过程中，气体区域中存在约十个能级，范围在18.3到19.5 eV之间。这些能级通过跃迁到16.57和16.79 eV的较低能级来退激发。这种能量差会产生可见光范围内的光。由于加速电子与氖气发生非弹性碰撞并再次被加速，如果加速电压足够高，它们可以发生一系列这样的碰撞。由于Franck-Hertz装置的加速电压可以达到约80伏，因此可以实现最多四次碰撞。在适当的条件下，这可以观察到四条来自碰撞区域退激发的光带。 |
