-
Regulated Heating of the cathode causes it
to emit electrons that are focused onto the anode.
-
Electrons accelerated by the high voltage
strike the anode and produce a calibrated x-ray beam.
-
Some x-rays are stopped by the product
being measured.
-
X-rays that do strike the sodium iodide
crystal cause it to emit light in proportion to product changes in
thickness.
-
Light striking the photo cathode causes it
to emit electrons.
-
Electrodes focus the electrons onto the
first dynode.
-
The dynode chain multiplies the electrons.
-
A useable signal is now sent to the
pre-amplifier.
-
The deviation signal is sent to the
computer.
