ADOPTED LEVELS for 239Pa
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 122, 293 (2014) | Cutoff date: 30-Jun-2013
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2760 keV SY | S(n)= 5630 keV SY | S(p)= 6580 keV SY | Q(α)= 3560 keV SY | ||
| Reference: 2012Wa38 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (3/2) | 1.8 h 5 % β- = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
239Pa activity was produced by bombarding a uranium target with 900-MeV 18O projectiles. Protactinium was chemically separated and its genetic relation to its daughter nuclide 239U was established. The half-life of 239Pa was measured by following the growth and subsequent decay of the known 74.6-keV γ ray from 239U β- decay (1995Yu01,1996Yu06).
Q-value: ΔQ(β-)=200, ΔS(n)=200, ΔS(p)=340, ΔQ(α)=200.