Ionization chamber and GM tube

karen0215

1. The problem statement, all variables and given/known data

What are the difference between ionization chamber and GM tube in structure which make them have different functions?


3. The attempt at a solution

Higher voltage is applied to GM tube so that electron avalanche can occur.
Then I wonder that
if higher voltage is applied to ionization chamber, it can function as a GM tube.

ehild

In principle, you are right, but read this:

http://en.wikipedia.org/wiki/Ionization_chamber.

ehild

karen0215

The difference is...
ionization chamber is connected to galvanometer and operate at normal gas pressure
while GM tube is connected to a counter and operate at low pressure

Is it?