Example of a Well Compared to a Probe for Counting Efficiency
If we assume the following parameters:
Isotope: Cs-137
D.E. Probe: 9.86%
D.E. Well: 13.47%
G.E. Well: 96.816% for a source placed 2.54 cm deep in the well
G.E. Probe: 0.278% for a source placed 21 cm in front of the probe
Probe: D.E.
∗
G.E. = 9.86%
∗
0.278% = .02741%
Well: D.E.
∗
G.E. = 13.47%
∗
96.816% = 13.04%
A.) If the detector counts 54 cpm that is equivalent to the following dpm for the parameters
listed above.
Probe: 54 cpm/.02741% = 197,008 dpm
Well: 54 cpm/13.04% = 414 dpm
To Next Page
Loading...
