| E(keV) | Intensity | Nuclide |
|---|---|---|
| 250.0 | 74.25 | Cf-252 (SF 2.645 Y) |
| 250.332 | 46.257 | Cl-39 (B- 55.6 M) |
| 250.4 | 14.25 | Cf-252 (SF 2.645 Y) |
| 250.5( 2) | 14.25 | Cm-248 (SF 3.48E+5 Y) |
| 251.05( 4) | 5.016 | Rn-208 (EC 24.35 M) |
| 251.1 | 58. | Cm-248 (SF 3.48E+5 Y) |
| 251.1( 2) | 1.701e-02 | Cf-252 (SF 2.645 Y) |
| 251.863(10) | 27.371 | Tb-151 (EC 17.609 H) |
| 252.4( 2) | 55. | Hg-191 (EC 49 M) |
| 252.4( 3) | 8.501 | Sb-127 (B- 3.85 D) |
| 252.6( 4) | 50.667 | Hg-191m (EC 50.8 M) |
| 252.7( 2) | 6.926 | Xe-121 (B+ 40.1 M) |
| 252.72( 7) | 6.1 | Am-245 (B- 2.05 H) |
| 252.80( 2) | 2.501 | Cf-249 (A 351 Y) |
| 252.845(10) | 10.678 | Re-184m (EC 169 D) |
| 252.845(10) | 3.011 | Re-184 (EC 38.0 D) |
| 252.85( 4) | 43.2 | Ta-184 (B- 8.7 H) |
| 252.85( 5) | 29.068 | Bk-245 (EC 4.94 D) |
| 252.963( 8) | 13.693 | Ho-159 (EC 33.05 M) |
| 253.1( 5) | 26.973 | Pb-196 (EC 37 M) |
| 253.5( 2) | 0.971 | Ac-226 (EC 29.37 H) |
| 253.678(10) | 98.703 | Sb-118m (EC 5.00 H) |
| 253.7( 2) | 35. | Cm-248 (SF 3.48E+5 Y) |
| 253.70( 7) | 0.602 | Se-73m (EC 39.8 M) |
| 253.729(10) | 1.111e-02 | Th-230 (A 7.538E+4 Y) |
| 253.8( 1) | 8.484e-04 | Th-230 (A 7.538E+4 Y) |
| 254.2( 3) | 1.756 | Rn-221 (A 25 M) |
| 254.2( 2) | 13.3 | Ir-185 (EC 14.4 H) |
| 254.259(17) | 8.555 | Dy-153 (EC 6.4 H) |
| 254.29( 5) | 11.038 | Ce-137m (IT 34.4 H) |
| 254.566(23) | 0.633 | Eu-149 (EC 93.1 D) |
| 255.10(15) | 51. | Pt-185m (EC 33.0 M) |
| 255.11( 2) | 0.216 | Pr-139 (EC 4.41 H) |
| 255.134(10) | 2.11 | Sn-113 (EC 115.09 D) |
| 255.40(10) | 9.074 | Tl-194m (EC 32.8 M) |
| 255.57( 4) | 6.263 | Au-193 (EC 17.65 H) |
| 255.87( 8) | 70.914 | Au-200m (B- 18.7 H) |