Difference between revisions of "Feb 2017 Energy Efficiency Calculations"
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Below are the theoretical calculations for the theoretical decay frequencies | Below are the theoretical calculations for the theoretical decay frequencies | ||
| − | Na-22, 10.19 uCi on July 15, 2013, half life 2.602 +/- 0.002 years, 99.937% for 1274.52 and 178.8 for 511 line , activity in Feb 4, 2017 = | + | Na-22, 10.19 uCi on July 15, 2013, half life 2.602 +/- 0.002 years, 99.937% for 1274.52 and 178.8 for 511 line , activity in Feb 4, 2017 = 3.947 uCi |
:= <math>\left (0.99937 \right )\left ( 1.196 \times 10^{-6} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 44,224 Hz </math> for the 1274 line | := <math>\left (0.99937 \right )\left ( 1.196 \times 10^{-6} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 44,224 Hz </math> for the 1274 line | ||
Revision as of 19:10, 16 February 2017
Below are the theoretical calculations for the theoretical decay frequencies
Na-22, 10.19 uCi on July 15, 2013, half life 2.602 +/- 0.002 years, 99.937% for 1274.52 and 178.8 for 511 line , activity in Feb 4, 2017 = 3.947 uCi
- = for the 1274 line
- = for the 511 line
Cs-137, 661.660 line, 85.21% * 1.066micro Ci on July 1, 2008, half life 30.0 +/- 0.2 yrs, March 31, 2016 activity = 0.891micro Ci expected rate for 661 line
- =
Mn-54, 11.77 microCi on July 1, 2008, half life =312.20 +/- 0.07 days, 99.975% intensity on 834.826 , March 31, 2016 activity =0.02328micro Ci
- = for the 834 line
Co-60, 10.42micro Ci July 1, 2008, half life 5.271 +/- 0.001 years, 99.0 % for 1173.237 and 99.9824 % for 1332.501, March 31, 2016 activity=3.759micro Ci
- = for the 1173 line
- = for the 1332 line
Below is a table where the actual efficiency will be calculated for position R (farthest position).
| Run | Source | Energy (keV) | Expected Rate (Hz) | HpGe Rate (Hz) | HpGe Det D Efficiency (%) |
| Eff_003 | Na-22 | 511 | 79122.6 | (506:516) (4.309-0.065=4.244) | 0.005 |
| Eff_005 | Cs-137 | 661.657 | 28091.2 | (657:666)(1.105-0.02281=1.0821) | 0.004 |
| Eff_006 | Mn-54 | 834.848 | 861.1 | (830:839)(0.04037-0.009123=0.031247) | 0.004 |
| Eff_007 | Co-60 | 1173.228 | 137692 | (1164:1182)(3.686-0.01939=3.67) | 0.003 |
| Eff_003 | Na-22 | 1274.537 | 44224 | (1270:1279) (1.073-0.0057=1.0673) | 0.002 |
| Eff_007 | Co-60 | 1332.492 | 139058.52 | (1328:1337)(3.283-0.05702=3.22598) | 0.002 |