Difference between revisions of "CH HPGe Efficiency"
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<math> (line\ intensity)\ (incident\ thermal\ neutrons\ per\ second)\ (\sigma_{total})\ (MCNP\ fudge\ factor\ from\ Paul\ approx\ 4)\ =\ Theoretical\ Rate </math> | <math> (line\ intensity)\ (incident\ thermal\ neutrons\ per\ second)\ (\sigma_{total})\ (MCNP\ fudge\ factor\ from\ Paul\ approx\ 4)\ =\ Theoretical\ Rate </math> | ||
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| + | Note: the ''fudge factor'' comes from the nucleus being excited and then de-exciting from the neutron absorption and emits on average, 4 photons per neutron capture | ||
Then find detected rate using HPGe | Then find detected rate using HPGe | ||
Revision as of 20:56, 28 September 2021
Eu152 Calibration
- HPGe calibrated using Eu152 source
As of 9/28/21
The calibration used to map from ADC channel number to KeV is:
Where x = channel 9 of the ADC and is input as PADC.PADC785N[9].
Total Efficiency
This is total efficiency using the Gadolinium foil as the source.
Note: the fudge factor comes from the nucleus being excited and then de-exciting from the neutron absorption and emits on average, 4 photons per neutron capture
Then find detected rate using HPGe
Divide (detected rate) by (theoretical rate) for total detector efficiency