ADOPTED LEVELS, GAMMAS for 50Ar
Authors: Jun Chen and Balraj Singh | Citation: Nucl. Data Sheets 157, 1 (2019) | Cutoff date: 15-Apr-2019
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=12400 keV SY | S(n)= 4210 keV SY | S(p)= 21560 keV SY | Q(α)= 16100 keV SY | ||
| Reference: 2017WA10 |
| References: | |||
| A | 9Be(HI,50ArG) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0.0 | A | 0+ | 106 ms 6 % β- = 100 % β-2n = ? % β-n = 37 7 | |||
| 1178 18 | A | (2+) | 1178 18 | 0.0 | 0+ | |
| 2760 42 ? | A | (4+) | 1582 38 ? | 1178 | (2+) | |
E(level): From Eγ values
Jπ(level): From systematics of even-even nuclei and shell-model predictions in (2015St10)
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 106 ms 6 % β- = 100 % β-2n = ? % β-n = 37 7 | Theoretical T1/2=55.2 ms, %β-n=4.0, %β-2n=0.5 (2016Ma12). |
1988GuZV: 181Ta(48Ca,X),E=2.64 GeV. Observed projectile-like fragments (29|<A|<51) at 0|’; magnetic spectrograph, ΔE-E telescope (Si,Si(Li)), time-of-flight. Atomic number Z identified by telescope, and mass number α by total energy, time-of-flight and magnetic rigidity.
2012We08, 2003We09: U(p,X) E=1.4 GeV. Ionized neutron-rich noble-gas isotopes were extracted and mass separated at ISOLDE-CERN facility using FEBIAD plasma ion source. Measured β- and neutron spectra, nβ- coincidences. Deduced T1/2, %β-n. In 2012We08, β- decay of 50Ar to 50K was investigated
Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 14 references for structure calculations.
Q-value: Estimated uncertainties (2017Wa10): ΔQ(β-)=500, ΔS(n)=640, ΔS(p)=780, ΔQ(α)=710
Q-value: Q(β-n)=8210 500, S(2n)=7190 590, S(2p)=40670 780 (syst, 2017Wa10)