How many free electrons are released during thermionic emission?

Subject: How many free electrons are released during thermionic emission?

Date: Sat Nov 18 02:51:05 2000
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Area of science: Physics
ID: 974533865.Ph

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How can I calculate the number of free electrons that are released from a 
metal cathode during thermionic emission? 

Tungsten, for example, will emit a certain amount of free electrons when 
heated. I'm assuming that the number of electrons released is 
proportionate to the amount of heat applied. How can I determine how many 
free electrons are generated at any given temperature?

Re: How many free electrons are released during thermionic emission?

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