Double Impacts by Electrons in Helium

IN a paper on the precise measurement of the critical potentials of gases (Proc. Roy. Soc., 107–291, 1925) Mr. E. G. Dymond finds that the difference between the first and second kink in the current potential curve in helium is 20.9 volts and not 20.55 volts as one would expect if the first kink corresponds to electrons which have caused the transition 1S… CONTINUE READING