Data Set Details
2025 Annual INMM Graph and Tables for High Purity Germanium Detector Normalization Presentation
Total Size: 102 KB
The data set includes gamma spectroscopy peak data for measurements taken with two different high purity germanium detectors using a mixed nuclide source and a U-235 fuel rod. There are a total of 5 specific energy peaks that were analyzed for the mixed nuclide source stemming from Am-241, Cd-109, Cs-137, and Co-60. There are a total of 3 specific energy peaks that were analyzed for the U-235 fuel rod. The data set includes the calculations and results from using a linear correction factor, absolute efficiency curve, and relative efficiency curve to compare the net peaks counts from two different detectors.
Contributors
Data Files
- 2025 INMM Data and Graphs for High Purity Germanium Detector Normalization Presentation.xlsx (102 KB)
Source
10.2172/3403493
Fields
There are 9 total tabs included in the data set. The first tab is a combination of the graphs and data set overviews showcasing the final results from comparing the data of the two detectors using a linear correction factor, absolute efficiency curve, and relative efficiency curve. The remaining 8 tabs all relate to the individual data associated with the energy peaks that were used in the calculations.
Sample Data Set
Relative Efficiency
Centroid (keV)
Canberra Peak (CPS)
ORTEC Peak (CPS)
Relative Efficiency (ORTEC/Canberra)
Peak 1
59.54
505.98
55.59
0.1099
Peak 2
88.03
15.68
5.59
0.3567
Peak 3
661.66
90.27
69.92
0.7746
Peak 4
1173.23
44.04
36.29
0.8241
Peak 5
1332.49
38.84
32.84
0.8455
% Difference of Canberra/Ortec
Centroid (keV)
Net Area (Counts)
Peaks (CPS)
FWHM (keV)
RIO Counts
Peak 1
0.203%
89.013%
89.013%
70.057%
86.748%
Peak 2
0.023%
64.327%
64.326%
65.201%
24.989%
Peak 3
0.004%
22.541%
22.541%
32.103%
21.135%
Peak 4
0.025%
17.590%
17.591%
22.782%
17.397%
Peak 5
0.006%
15.450%
15.450%
23.404%
16.796%
Peak 6
0.100%
15.040%
15.042%
49.197%
86.902%
Peak 7
0.000%
32.613%
32.615%
48.893%
52.340%
Peak 8
0.034%
31.831%
31.830%
44.274%
59.565%
Absolute Efficiency
Nuclide
Centroid (keV)
Half-Life (days)
Intial Activity (cps)
Current Activity (cps)
Aegis Efficiency
ORTEC Efficiency
% Difference
Peak 1
Am-241
59.54
158000
4.02E+03
3.97E+03
12.74%
1.40%
89.01%
Peak 2
Cd-109
88.03
461.4
5.69E+03
1.23E+02
12.72%
4.54%
64.33%
Peak 3
Cs-137
661.66
10990
3.90E+03
3.32E+03
2.72%
2.11%
22.54%
Peak 4
Co-60
1173.23
1925
7.33E+03
2.93E+03
1.51%
1.24%
17.59%
Peak 5
Co-60
1332.49
1925
7.34E+03
2.93E+03
1.33%
1.12%
15.45%
Supplemental Information
The data is limited in that only 30 measurements were taken for each detector at each peak associated with the mixed nuclide source peaks. Only 20 measurements were taken for each detector at each peak associated with the U-235 fuel rod. Overall the data sets are fairly small and the data was primarily used to check for viability of which of the three options would work best to compare the detectors. This allowed the group to focus on the best option with additional data going forward.
Software Needed
Microsoft Excel
Coverage
Spatial Coverage
Albuquerque, NM
Temporal Coverage
gamma spectroscopy measurements were conducted between June 2021 through July 2021