MadSci Network: Engineering

Subject: How does an electron gun work

Date: Fri Jan 22 11:26:26 1999
Posted by james Altizer
Grade level: undergrad
School: DeAnza
City: Cupertino State/Province: CA
Country: USA
Area of science: Engineering
ID: 917025986.Eg

The electrons are accelerated by repulsion from the cathode
and attraction to the anode. In class we are told that the final electron 
beam velocity is a function of the difference between the Cathode and the 
Anode voltages. Why aren't the electrons simply reattracted to the anode 
upon passing. So that the net accel is due only to the Cathode voltage?

Re: How does an electron gun work

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