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 SY | S(n)= 1.10×104 keV SY | S(p)= -8.E2 keV SY | Q(α)= 4.0×103 keV SY | ||
| Reference: 2012WA38 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (7-,8+) | 0.4 s 1 % ε ≈ 100 % p ≈ 0 % εp > 0 |
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. |
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 -9.2×103 SY1.11×104 syst-700 SY3.8×103 syst 2011AuZZ
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.)