ADOPTED LEVELS, GAMMAS for 213Th
Author: M. S. Basunia | Citation: Nucl. Data Sheets 181, 475 (2022) | Cutoff date: 1-Jan-2022
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-7530 keV 60 | S(n)= 8062 keV 14 | S(p)= 2468 keV 14 | Q(α)= 7837 keV 7 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 217U α decay | B | 164Dy(54Cr,5nγ) |
| C | 176Hf(40Ar,3nγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | ABC | 5/2- | 146 ms +22-19 % α ≈ 100 | |||||
| 799 1 | BC | (9/2-) | 799 1 | 100 | 0 | 5/2- | ||
| 1180 1 | BC | (13/2+) | 8.3 µs 8 | 381 1 | 100 | (M2) | 799 | (9/2-) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 1180 | (13/2+) | 8.3 µs 8 | 381 1 | (M2) | 1.331 | B(M2)(W.u.)=0.0056 +6-5, α=1.331 22, α(K)=0.981 16, α(L)=0.261 5, α(M)=0.0660 11, α(N)=0.0178 3, α(O)=0.00420 7, α(P)=0.000805 14, α(Q)=7.14×10-5 12 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 5/2- | 146 ms +22-19 % α ≈ 100 | Only α decay is reported. Branching for a possible (ε+β+) decay to 213Ac is estimated by the evaluator as ≈1.4% from T1/2(ε+β+)≈10 second, calculated by 1973Ta30 using β gross theory. Eα=7700 keV 30 (1997Mi03). E(level): Only α decay is reported. Branching for a possible (ε+β+) decay to 213Ac is estimated by the evaluator as ≈1.4% from T1/2(ε+β+)≈10 second, calculated by 1973Ta30 using β gross theory. Eα=7700 keV 30 (1997Mi03). |
| E(level) | E(gamma) | Comments |
| 1180 | 381 | M(γ): from α(exp)=0.77 29, deduced from intensity balance at 799 level (54Cr,5nγ) (2007Kh22). |
Assignment: 206Pb(16O,9N) excit (1968Va18), 177Hf(40Ar,4n) excit (1980Ve01).
2002Mi20: 154Sm(64Ni,5n), E=4-5 MeV/nucleon, measured evaporation residue cross section σ.
2002Sa22, 2003Ik01: 138Ba(82Se,7N), E(cm)=193-251 MeV and 134Ba(82Se,3n); measured evaporation residue cross section σ.
2007Ma57 and 2008La14: 2007Ma57 reported long-lived isomer (half-life |>1 × 108 year) for 213Th from mass measurement and abundances relative to 232Th in a study of naturally-occurring thorium using inductively coupled plasma-sector field mass spectrometry. Not confirmed by accelerator mass spectrometry (AMS) measurements (2008La14). An upperlimit of 1.2 × 1012 was determined for the detection of 213Th/232Th.