ADOPTED LEVELS for 229Np
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 109, 2657 (2008) | Cutoff date: 1-Jun-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3.61×103 keV 10 | S(n)= 7.89×103 keV 10 | S(p)= 2.73×103 keV 9 | Q(α)= 7.01×103 keV 5 | ||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0.0 | 4.0 m 2 % ε = 32 11 % α = 68 11 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 4.0 m 2 % ε = 32 11 % α = 68 11 | %α from α-α following α from 229Np and α from 225Th which results from 229U decay following 229Np(ε) decay (2004Sa05); 70% 10 (2000Sa52). %α/%ε>1 was deduced by 1968Ha14 from absence of 229U α groups in measured spectrum. E(level): %α from α-α following α from 229Np and α from 225Th which results from 229U decay following 229Np(ε) decay (2004Sa05); 70% 10 (2000Sa52). %α/%ε>1 was deduced by 1968Ha14 from absence of 229U α groups in measured spectrum. |
Assignment: 233U(41.6 MeV (p,5n)) recoil, parent 221Ac(7630α); parent 217Fr(8310α); parent 213At(9060α) 1968Ha14.
Q-value: Note: Current evaluation has used the following Q record -3620 1079900 SY2730 907010 50 2003Au03
Q-value: ΔS(n)=210 syst (2003Au03)