5 Some of the most important photon energies
Table 3: Photon energies for different isotopes |
| ||
|
|
|
|
Isotope |
| Energy (keV) | Branching ratio (%) |
|
|
|
|
Am241 | 432.2y | 26.34/59.54 | 2.4/36 |
|
|
|
|
Cd109 | 462.6d | 88.03 | 3.63 |
|
|
|
|
Bi214 | 19.9min, | 609.31 | 46.09 |
| daughter of |
|
|
| Ra226 |
|
|
|
|
|
|
Ce139 | 137.64d | 165.86 | 79.87 |
|
|
|
|
Co60 | 5.271y | 1173.23/1332.49 | 99.85/99.98 |
|
|
|
|
Co57 | 271.8d | 14.4/122.06/136.47 | 9.16/85.6/10.68 |
|
|
|
|
Cs137 | 30.07y | 661.66 | 85.1 |
|
|
|
|
Eu152 | 13.3.y | 121.77/344.28/778.91/ | 28.38/26.59/12.98/14.46/ |
|
| 964.11/1112.07/1408. | 13.57/20.85 |
|
| 00 |
|
|
|
|
|
Hg203 | 46.61d | 279.19 | 81.84 |
|
|
|
|
Mn54 | 312.2d | 834.82 | 99.98 |
|
|
|
|
Pb214 | 26.8min, | 241.91/295.09/351.86 | 7.46/19.17/37.06 |
| daughter of |
|
|
| Ra226 |
|
|
|
|
|
|
Ra226 | 1600y | 186.11 | 3.28 |
|
|
|
|
Sn113 | 115.09d | 391.7 | 64.89 |
|
|
|
|
Sr85 | 64.84d | 514.0 | 98.4 |
|
|
|
|
U235 | 7.04E8y | 143.78/163.37/185.73/ | 10.53/4.7/53.15/4.7 |
|
| 205.33 |
|
|
|
|
|
Y88 | 106.65 | 898.04 | 94 |
|
|
|
|
Pb fluorescence x- | - | 74.96/72.79/84.99/ |
|
rays |
| 87.34 |
|
|
|
|
|
15
