ADOPTED LEVELS for 89Se
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 30-Nov-2021
Author: Balraj Singh | Citation: Nucl. Data Sheets 114, 1 (2013) | Cutoff date: 20-Oct-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=9282 keV 5 | S(n)= 3180 keV 5 | S(p)= 15830 keV SY | Q(α)= -8294 keV 6 | ||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | (5/2+) | 0.43 s 5 % β- = 100 % β-n = 7.8 25 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
89Se identified by 1971To13 from delayed neutron emission in thermal fission of 235U. Others: 1980Al17, 1982Re08, 2008Ha23, 2008Su19. 89Se produced by 2008Ha23 through U(p,F) and U(d,F) reactions at 25 MeV. In 2008Su19, 89Se was produced in 9Be(238U,X) at E(238U)=411 MeV/nucleon.
2012Qu01: 136Xe primary beam, E=120 MeV/nucleon, impinged on a 235 mg/cm2 9Be target. Experiment performed at the NSCL Coupled Cyclotron Facility. Fragments were separated by the A1900 fragment separator using the Bρ-ΔE-Bρ technique. Beta decays measured in the NSCL Beta Counting System (BCS) consisting of four silicon PIN detectors, a double sided silicon strip detector (DSSD), and a single sided silicon strip detector (SSSD). Measured energy loss, total kinetic energy (TKE), time of flight, and half-life of 89Se g.s.
2019Pe09: 208Pb(238U,F),E=950 MeV/nucleon: measured production cross sections and yield
Mass measurements: 2008Ha23 (JYFLTRAP, Penning-trap method at IGISOL facility in Jyvaskyla), 2008Su19 (large-scale Isochronous Mass spectrometry at FRS-ESR facility in GSI, also 2009Su04, 2010Li02)
Theoretical calculations: consult NSR database at www.nndc.bnl.gov/nsr/ or additional document records in this dataset for four primary references, two each for structure and for half-life and β-n decay mode of 89Se.
Q-value: Estimated uncertainty=200 for S(p) (2021Wa16)
Q-value: Q(β-n)=3652 5, S(2n)=8709 4, S(2p)=29980 300 (syst) (2021Wa16)