ADOPTED LEVELS for 138Tb
Author: Jun Chen | Citation: Nucl. Data Sheets 146, 1 (2017) | Cutoff date: 30-Sep-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-8740 keV SY | S(n)= 10770 keV SY | S(p)= -260 keV SY | Q(α)= 3840 keV SY | ||
| Reference: 2017WA10 |
| E(level) (keV) | T1/2(level) |
| X | ≥ 200 ns % ε = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| X | ≥ 200 ns % ε = 100 | No evidence for direct proton radioactivity was observed (1993Li40 and 1983La27). |
First identification of 138Tb nuclide by 2000So11 via 90Zr(197Au,X)
2000So11: 90Zr(197Au,X), E=30 MeV/nucleon. Identification using A1200 mass separator at Michigan State University
1993Li40: 102Pd(40Ca,p3n), E=185-204 MeV, proton radioactivity was searched for but not found.
1983La27: 92Mo(58Ni,X), E=5 MeV/nucleon. Measured Ep, Ip, β+p-coin. Deduced no evidence for direct proton decay.
Theoretical calculations:
2014Ag01: calculated position of proton drip line, S(p), β and γ deformation parameters.
Q-value: ΔQ(β-)=590, ΔS(n)=500, ΔS(p)=ΔQ(α)=420 (syst,2017Wa10)
Q-value: S(2n)=23680 580, S(2p)=2000 360, Q(εp)=9190 300, Q(β+)=12130 360 (syst,2017Wa10)