Hi,
I am working with the system which included PMT, scintillation detector, Pre-amp, amp, and MCA. I get the gamma spectrum from MAESTRO software but i don't know how to analyze and calculate the efficiency of the detector. If you have any paper or references about this, Please send to me. Thank you so much.
example: Cs-137
This depends on the efficiency you're trying to calculate, i.e. are you trying to calculate the intrinsic stopping efficiency of the detector, the geometric efficiency or the total efficiency which would be a product of the these two quantitites? Or are you perhaps interested in calculating the photopeak efficiency? In any case, you will need to know the activity of your source at the time you performed your measurements. Thus, it might be a better idea to perform such measurements with calibrated sources.
Best,
Ilker.
Here is a document with efficiency charts for various crystal sizes.
Steven Sesselmann
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You must useing a standard source which contain some isotopes for different gamma energies for same time of measurment and have a same geometric to your samples.
below I attach you an explanation about how to measure the efficiency and the Efficiency calibration curve .
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