LB April Efficiency Calculations
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The source information can be found on the page below.
Theoretical Activities
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 =3.945 uCi
- = for the 1274 line
| Run | Source | Energy (keV) | Position | Expected Rate (Hz) | ROOT Window | HpGe Rate (Hz) | Detector B Efficiency (%) |
| Ba133_3.9cm_detB | Ba-133 | 81 | 3.9cm | 8168.083 | [76:86] | 137.12 +/- 0.6266 | 1.68 |
| Ba133_3.9cm_detB | Ba-133 | 356 | 3.9cm | 15405.15 | [352:360] | 191.21 +/- 0.074 | 1.24 |
| Ba133_4.1cm_detB | Ba-133 | 81 | 4.1cm | 8168.083 | [76:86] | 137.5 +/- 0.6984 | 1.68 |
| Ba133_4.1cm_detB | Ba-33 | 356 | 4.1cm | 15405.15 | [352:360] | 190.44 +/- 0.08 | 1.24 |
| Ba133_7.9cm_detB | Ba-133 | 81 | 7.9cm | 62348.8887 | [76:86] | 345.36 +/- 1.32 | 0.55 |
| Ba133_7.9cm_detB | Ba-133 | 356 | 7.9cm | 117591.1412 | [352:360] | 494.24 +/- 0.0954 | 0.42 |
| Ba133_8.1cm_detB | Ba-133 | 81 | 8.1cm | 62348.8887 | [76:86] | 326.17 +/- 1.20 | 0.52 |
| Ba133_8.1cm_detB | Ba-133 | 356 | 8.1cm | 117591.1412 | [352:360] | 482.58 +/- 0.10 | 0.41 |
| Cs137_3.9cm_detB | Cs-137 | 661 | 3.9cm | 26079.7 | [658:666] | 182.33 +/- 0.05 | 0.70 |
| Cs137_4.1cm_detB | Cs-137 | 661 | 4.1cm | 26079.7 | [658:666] | 175.26 +/- 0.04 | 0.67 |
| Cs137_7.9cm_detB | Cs-137 | 661 | 7.9cm | 26079.7 | [658:666] | 64.28 +/- 0.04 | 0.25 |
| Cs137_8.1cm_detB | Cs-137 | 661 | 8.1cm | 26079.7 | [658:666] | 65.14 +/- 0.04 | 0.25 |
| Mn54_3.9cm_detB | Mn-54 | 834 | 3.9cm | 8986.976 | [830:838] | 54.75 +/- 0.02 | 0.61 |
| Mn54_4.1cm_detB | Mn-54 | 834 | 4.1cm | 8986.976 | [830:838] | 52.55 +/- 0.02 | 0.58 |
| Mn54_7.9cm_detB | Mn-54 | 834 | 7.9cm | 8986.976 | [830:838] | 18.62 +/- 0.02 | 0.21 |
| Mn54_8.1cm_detB | Mn-54 | 834 | 8.1cm | 8986.976 | [830:838] | 17.98 +/- 0.01 | 0.20 |
| Na22_3.9cm_detB | Na-22 | 511 | 3.9cm | 7541.784 | [504:516] | 81.74 +/- 0.09 | 1.08 |
| Na22_3.9cm_detB | Na-22 | 1274 | 3.9cm | 4215.35 | [1270:1280] | 24.18 +/- 0 | 0.57 |
| Na22_4.1cm_detB | Na-22 | 511 | 4.1cm | 7541.784 | [504:516] | 74.71 +/- 0.09 | 0.99 |
| Na22_4.1cm_detB | Na-22 | 1274 | 4.1cm | 4215.35 | [1270:1280] | 22.90 +/- 0 | 0.54 |
| Na22_7.9cm_detB | Na-22 | 511 | 7.9cm | 7541.784 | [504:516] | 25.55 +/- 0.05 | 0.34 |
| Na22_7.9cm_detB | Na-22 | 1274 | 7.9cm | 4215.35 | [1270:1280] | 7.70 +/- 0 | 0.18 |
| Na22_8.1cm_detB | Na-22 | 511 | 8.1cm | 7541.784 | [504:516] | 24.88 +/- 0.06 | 0.33 |
| Na22_8.1cm_detB | Na-22 | 1274 | 8.1cm | 4215.35 | [1270:1280] | 7.11 +/- 0 | 0.17 |