ADOPTED LEVELS for 234Np
Author: S. Ota | Citation: Nucl. Data Sheets 207, 351 (2026) | Cutoff date: 1-Dec-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-395 keV 11 | S(n)= 6.07×103 keV 5 | S(p)= 4253 keV 9 | Q(α)= 5356 keV 9 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 238Am α decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0.0 | A | (0+) | 4.4 d 1 % ε = 100 |
| 0.0+X | A |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (0+) | 4.4 d 1 % ε = 100 | %α<0.01: not observed (no 4.4-d α activity and no 230Pa growth in 234Np was observed (1949Hy04)). E(level): %α<0.01: not observed (no 4.4-d α activity and no 230Pa growth in 234Np was observed (1949Hy04)). |
| 0.0+X | Possible configuration is Jπ=1-: π5/2[523], ν3/2[631] (or π5/2[642], ν3/2[631]) based on deduction from the 238Am α decay. E(level): Possible configuration is Jπ=1-: π5/2[523], ν3/2[631] (or π5/2[642], ν3/2[631]) based on deduction from the 238Am α decay. |
235U(3He,p3n) E=20-42 MeV. Measured cross sections (2015Aa02).
233U(p,3n) E=17-40 MeV. Measured cross sections (2005Aa02).
238U(p,5n), 232Th(7Li,5n) E=30-46 MeV. Measured fission excitation functions, fission fragment mass yields (1999Zh41).
Levels: See also 234Pu ε decay and 238Am α decay for comments on levels populated in those decays.
Q-value: S(2n)=13547 syst 100, S(2p)=10570 11 (2021Wa16)