Franck hertz Experiment-Ionization vs Excitation

  • Thread starter realgenob
  • Start date
  • #1
1
0
Franck hertz Experiment--Ionization vs Excitation

Homework Statement


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.


Homework Equations





The Attempt at a Solution

 

Answers and Replies

Related Threads on Franck hertz Experiment-Ionization vs Excitation

  • Last Post
Replies
5
Views
5K
Replies
1
Views
1K
Replies
1
Views
798
  • Last Post
Replies
5
Views
3K
Replies
1
Views
288
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
4
Views
5K
Replies
0
Views
3K
Replies
1
Views
4K
Replies
2
Views
2K
Top