ADOPTED LEVELS, GAMMAS for 87Se
Authors: T.D. Johnson and W.D. Kulp | Citation: Nucl. Data Sheets 129, 1 (2015) | Cutoff date: 27-Jul-2015
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=7466 keV 4 | S(n)= 3994 keV 3 | S(p)= 14753 keV 4 | Q(α)= -7875 keV 3 | ||
| Reference: 2012Wa38 |
| References: | |||
| A | 248Cm SF decay | B | 87As β- decay |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | AB | (3/2+) | 5.50 s 14 % β- = 100 % β-n = 0.36 8 | |||||
| 91.9 2 | AB | (5/2+) | 91.9 2 | 100 | M1+E2 | 0.0 | (3/2+) | |
| 836.5 3 | A | (7/2+) | 744.6 2 | 100 | 91.9 | (5/2+) | ||
| 978.1 3 | A | (9/2+) | 886.2 2 | 100 | 91.9 | (5/2+) | ||
Jπ(level): Suggested values from systematics and comparisons with shell model calculations presented in 2013Rz02
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| E(level) | E(gamma) | Comments |
Mass measurement: 2008Ha23 (Penning trap, JYFLTRAP at IGISOL), mass excess=-66426.1 22 keV
Identification and half-life of 87Se were established mainly via neutron activity of bromine daughter after chemical separation from other 235U fission products, 1993Ru01. Also see 2011So33 for production using 86Kr (15 MeV/nucleon) + 64Ni