ADOPTED LEVELS for 92Br
Author: Coral M. Baglin | Citation: Nucl. Data Sheets 113, 2187 (2012) | Cutoff date: 15-Sep-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=12537 keV 8 | S(n)= 3197 keV 8 | S(p)= 1.32×104 keV SY | Q(α)= -7.94×103 keV SY | ||
| Reference: 2012WA38 |
| References: | |||
| A | 92Br IT decay | ||
| E(level) (keV) | XREF | T1/2(level) |
| 0.0 | A | 0.314 s 16 % β- = 100 % β-n = 33.1 25 |
| 0.0+X | A | < 500 ns |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0.314 s 16 % β- = 100 % β-n = 33.1 25 | %β-n is weighted average of 32.0 45 (1988Kr10), 34.6 25 (1984Ew01) and 21 8 (1978Cr03), consistent with value recommended in 1993Ru01. Others: 1974Kr21, 1978Kr15. E(level): %β-n is weighted average of 32.0 45 (1988Kr10), 34.6 25 (1984Ew01) and 21 8 (1978Cr03), consistent with value recommended in 1993Ru01. Others: 1974Kr21, 1978Kr15. Jπ(level): Possibly (2-). Suggested configuration=((π f5/2)(ν s1/2)) (1989PfZZ); Jπ=2- for 84Br, (2-) for 86Br. However, among the β- decay branches to excited states of 92Kr, the one populating the first excited state (which probably has Jπ=2+) has the lowest log ft (5.9) so Jπ(92Br)=2- is highly tentative. |
Identification in 235U(n,f) or U(p,x) after chemical or mass separation, and based on delayed-neutron counting or growth in decay curves of known γ rays following β- decay of 92Kr daughter. 92Br also produced in 9Be(238U,X), E=80 MeV/nucleon (2009Fo05) and in 9Be(136Xe,X), E=120 MeV/nucleon (2012Qu01).
Q-value: Note: Current evaluation has used the following Q record 12537 7 3197 8 13.2×103 syst-7770 syst 2011AuZZ,2003Au03
Q-value: ΔS(p)=503, ΔQ(α)=400 (2011AuZZ).
Q-value: Q(β-n)=6670 7 (2011AuZZ).