ADOPTED LEVELS for 142Ho

Authors: T.D. Johnson, D. Symochko, M. Fadil, and J.K. Tuli |  Citation: Nucl. Data Sheets 112, 1949 (2011) |  Cutoff date: 1-Jun-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-9.4×103 keV SYS(n)= 1.10×104 keV SYS(p)= -8.E2 keV SYQ(α)= 4.0×103 keV SY
Reference: 2012WA38

General Comments:

Experimental works:

2001Xu02: 106Cd(40Ca,p3n) E=242 MeV, measured proton-γγ coincidence, He-jet plus tape transport system. 142Ho identified following coincidences between protons and 141Tb γ rays. This work was then compared with statistical model calculations in 2002Xu11 and reviewed and discussed in 2005Xu04 with experimental results for other isotopes

2000So11: 90Zr(197Au,x), E=30 MeV/α. Identification using A1200 mass separator at Michigan State University

1993Li40: 106Cd(40Ca,p3n), E=198 MeV, measured proton spectra following evaporation residue Mass/Charge separation. No evidence for direct proton radioactivity found.

2003Au03 value: S(n)=1.12×104 syst, S(p)=-600 syst, Q(α)=3.7×103 syst

Q-value: Note: Current evaluation has used the following Q record

Q-value: Uncertainties associated with these Q values are: ΔQ(β-)=7, ΔS(n)=7, ΔS(p)=6, ΔQ(α)=6

Q-value: Q(εp)=1.00×104 5 (syst.) 2011AuZZ

Q-value: Values in 2003Au03: S(n)=1.12×104 7 (syst.), S(p)=-6.×102 6 (syst.), Q(α)=3.7×103 6 (syst.), Q(εp)=9.8e+3×103 5 (syst.)





E(level)
(keV)
Jπ(level) T1/2(level)
  0.0 (7-,8+) 0.4 s 1 
% ε ≈ 100
% p ≈ 0
% εp > 0

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0(7-,8+) 0.4 s 1 
% ε ≈ 100
% p ≈ 0
% εp > 0
Direct proton radioactivity from 142Ho was searched for but not found (1993Li40), which is explained because of the small value of the proton separation energy. As a consequence, we adopt %p≈0.

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