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 SYS(n)= 10770 keV SYS(p)= -260 keV SYQ(α)= 3840 keV SY
Reference: 2017WA10

General Comments:

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)

  X ≥ 200 ns
% ε = 100

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Additional Level Data and Comments:

  X ≥ 200 ns
% ε = 100
No evidence for direct proton radioactivity was observed (1993Li40 and 1983La27).

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