ADOPTED LEVELS, GAMMAS for 200At
Author: F.G. Kondev | Citation: Nucl. Data Sheets 192, 1 (2023) | Cutoff date: 1-Aug-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4987 keV 25 | S(n)= 8236 keV 25 | S(p)= 1.038 keV 25 | Q(α)= 6596.2 keV 13 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 204Fr α decay (2.05 S) | B | 204Fr α decay (2.31 S) |
| C | 204Fr α decay (1.65 S) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | ABC | (3+) | 43.1 s 8 % ε = 48 4 % α = 52 4 | |||||
| 112.9 29 | BC | (7+) | 47 s 1 % ε = 57 7 % α = 43 7 | |||||
| 113 1 | A | (2,4)+ | 113 1 | 100 | (M1) | 0 | (3+) | |
| 343.8 29 | C | (10-) | 6.3 s 5 % IT ≈ 89.5 3 % α ≈ 10.5 3 | 230.9 2 | 100 | E3 | 112.9 | (7+) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 113 | (2,4)+ | 113 1 | (M1) | 8.54 | α=8.54 25, α(K)=6.90 20, α(L)=1.24 4, α(M)=0.295 9, α(N)=0.0764 23, α(O)=0.0164 5, α(P)=0.00226 7 | |
| 343.8 | (10-) | 6.3 s 5 % IT ≈ 89.5 3 % α ≈ 10.5 3 | 230.9 2 | E3 | 2.49 | B(E3)(W.u.)≈0.00059 5, α=2.49 4, α(K)=0.312 4, α(L)=1.592 23, α(M)=0.442 6, α(N)=0.1152 17, α(O)=0.02282 34, α(P)=0.002393 35 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (3+) | 43.1 s 8 % ε = 48 4 % α = 52 4 | μ=4.28 15, Q=-0.50 5 Eα=6467 keV 6 (2005Uu02), 6464 keV 2 (1992Hu04), 6461 keV 5 (1996Ta18), 6461 keV (1987Va09), 6465 keV 2 (1975BaYJ) and 6463 keV 5 (1967Tr06). |
| 112.9 | (7+) | 47 s 1 % ε = 57 7 % α = 43 7 | μ=4.74 18, Q=-1.0 5 Eα=6413 keV 6 (2005Uu02), 6414 keV 1 (1996Ta18), 6411 keV 2 (1992Hu04), 6409 keV (1987Va09), 6412 keV 2 (1975BaYJ) and 6412 keV 5 (1967Tr06). |
| 343.8 | (10-) | 6.3 s 5 % IT ≈ 89.5 3 % α ≈ 10.5 3 | μ=2.69 11, Q=+0.5 4 Eα=6543 keV 6 (2005Uu02), 6528 keV 1 (1996Ta18), 6538 keV 3 (1992Hu04) and 6536 keV 5 (1967Tr06). |
| E(level) | E(gamma) | Comments |
| 113 | 113 | M(γ): Reported in 1992Hu04, but no spectroscopic information is presented by the authors |
| 343.8 | 230.9 | M(γ): From α(K)exp=0.29 8, α(L)exp=1.1 2 and α(M)exp=0.27 6 in 1992Hu04 |