1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Franck hertz Experiment-Ionization vs Excitation

  1. May 22, 2012 #1
    Franck hertz Experiment--Ionization vs Excitation

    1. The problem statement, all variables and given/known data
    We performed the Franck-Hertz experiment with neon gas. As we raised the accelerating voltage, the electrons gained enough energy to raise the energy of the neon through inelastic collisions. Those electrons lose some energy and and can't reach the cathode due to the retarding voltage which in turn causing the voltage to drop. When the gas returns to a lower state, the collisions with the electrons are again elastic and the electrons reach the cathode, restoring the higher current. I understand that process, however, I have an analysis question that ask "Why doesn't the gas ionize when the accelerating voltage is raised beyond the ionizing potential of neon.


    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Franck hertz Experiment-Ionization vs Excitation
  1. Franck Hertz lab (Replies: 9)

Loading...