ADOPTED LEVELS, GAMMAS for 201Fr
Author: F.G. Kondev | Citation: Nucl. Data Sheets 187, 355 (2023) | Cutoff date: 20-Sep-2022
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-8348 keV 22 | S(n)= 10620 keV 30 | S(p)= -300 keV 11 | Q(α)= 7519 keV 4 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 205Ac α decay | B | (HI,xnγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) |
| 0 | AB | 9/2- | 63 ms 4 % α ≈ 100 | |||
| 129 10 | B | 1/2+ | 37 ms +14-8 % α = 100 | |||
| 289.5 4 | B | 13/2+ | 720 ns 40 % IT = 100 | 289.5 4 | 100 | M2 |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 289.5 | 13/2+ | 720 ns 40 % IT = 100 | 289.5 4 | M2 | 2.60 | B(M2)(W.u.)=0.172 +11-9, α=2.60 4, α(K)=1.899 28, α(L)=0.524 8, α(M)=0.1321 20, α(N)=0.0350 5, α(O)=0.00779 12, α(P)=0.001223 18, α(Q)=6.33×10-5 9 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 9/2- | 63 ms 4 % α ≈ 100 | Eα1=7369 keV 5 (2014Ka23); Eα1=7369 keV 8, correlated with Eα2(197At)=6959 keV 6 (2005Uu02); Eα1=7379 keV 7 (2005De01); Eα1=7361 keV 7, correlated with Eα2(197At)=6956 keV 5 (1996En01); Eα1=7388 keV 15 (1980Ew03). |
| 129 | 1/2+ | 37 ms +14-8 % α = 100 | Eα1=7457 keV 9 (2020Au01); Eα1=7445 keV 8 correlated with Eα2(197At)=6698 keV 16 (2014Ka23); Eα1=7454 keV 8 (2005Uu02). |
| E(level) | E(gamma) | Comments |
| 289.5 | 289.5 | M(γ): From K/LMN+=3.0 9 in 2020Au01 |