Tube Construction Quiz Flashcards
What’s the input phosphor made of?
Cesium iodide 7
What is the input phosphor bonded to?
curved surface of the tube itself
What is the photocathode made of?
Cesium and antimony compounds
What does the photocathode bond to?
input phosphor with a very thin adhesive layer
What does the photocathode emit?
electrons
What is the electrostatic focusing lens?
Negatively charged plates along the length of the image intensifier tube
What is the electrostatic focusing lenses function?
It repels the electron stream focusing it on the small output phosphor
What is the accelerating anode function?
To set the electron stream in motion at a constant velocity
Where is the accelerating anode located?
The neck of the image intensifier near the output phosphor
What does the accelerating anode maintain?
Constant potential of approximately 25 kV
What does the accelerating anode do to electrons?
Sets the electron stream in motion
What is the output phosphor made of?
Silver-activated zinc cadmium sulfide
What does the output phosphor layer do?
Absorbs electrons and emits light in response
