ADOPTED LEVELS for 244Np
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 146, 387 (2017) | Cutoff date: 31-Aug-2017
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=3.4×103 keV SY | S(n)= 4.75×103 keV SY | S(p)= 6.45×103 keV SY | Q(α)= 3.870×103 keV SY | ||
Reference: 2017WA10 |
E(level) (keV) | Jπ(level) | T1/2(level) |
0.0 | (7-) | 2.29 m 16 % β- = 100 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (7-) | 2.29 m 16 % β- = 100 | Only β- decay has been observed. E(level): Only β- decay has been observed. |
Identification:
1987Mo29: 244Np produced from 244Pu(136Xe,X) reaction with E(136Xe)=835 MeV followed by chemical separation at the UNILAC accelerator at GSI, Darmstadt. Cross section for the production of 244Np is 1.4 mb
Theoretical calculations:
2015GoZV: Energy levels <190 keV calculated using the 3-step Two Quasiparticle-Rotor-Model (TQRM).
2009Mo18: Calculated fission barrier heights
1995Mo29: Calculated deformation parameters
Q-value: ΔQ-=300, ΔSN=300, ΔSP=420, ΔQA=360 (syst, 2017Wa10)
Q-value: S(2n)=10360 syst 360 (2017Wa10).