ADOPTED LEVELS for 241Cf
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 130, 183 (2015) | Cutoff date: 30-Sep-2015
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-4540 keV SY | S(n)= 6740 keV SY | S(p)= 3630 keV SY | Q(α)= 7660 keV SY | ||
Reference: 2012WA38 |
E(level) (keV) | Jπ(level) | T1/2(level) |
0.0 | (7/2-) | 3.78 m 70 % ε ≈ 75 % α ≈ 25 |
≈155 | (1/2+) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (7/2-) | 3.78 m 70 % ε ≈ 75 % α ≈ 25 | The electron-capture branch has not been observed. The 7342α from 241Cf is assumed by the evaluator to be a favored transition with HF=2.0. This gives %α≈25 and thus %ε+%β+≈75. |
Experimental Studies:
2010AsZX: Determined t1/2 of 241Cf from decay curve analysis
1970Si19: 241Cf identified through 234U,(12C,5n). Alpha spectrum was measured with a Si(Au) detector.
1967Nu01: Studied α decay of 245Fm
Theoretical/Systematical Studies:
2013Is13: Prediction of spins from systematic studies of preformation probability for α decay and the neutron number of parent
Q-value: Δ(Q(β-))=280, Δ(S(n))=170, Δ(S(p))=220 and Δ(Q(α))=150 (syst, 2012Wa38)