ADOPTED LEVELS, GAMMAS for 203Fr
Author: F.G. Kondev | Citation: Nucl. Data Sheets 177, 509, 2021 | Cutoff date: 4-Jul-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-7725 keV 12 | S(n)= 10296 keV 9 | S(p)= 138 keV 19 | Q(α)= 7275 keV 4 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 207Ac α decay | B | 169Tm(40Ar,6nγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | AB | 9/2- | 0.55 s 1 % α ≤ 100 | |||||
| 161.9 4 ? | B | (7/2-) | 161.9 4 | 7 2 | [M1] | 0.0 | 9/2- | |
| ≈337? | B | (5/2-) | ≈175? | | [M1] | 161.9 | (7/2-) | |
| 361 6 | B | 1/2+ | 43 ms 4 % α = 20 4 % IT = 80 4 | ≈20? ≈195? | | [M2] [E3] | 337 161.9 | (5/2-) (7/2-) |
| 426.0 10 | B | 13/2+ | 0.37 µs 5 | 426 1 | 100 | M2 | 0.0 | 9/2- |
| 476.40 10 | B | (13/2-) | 476.4 1 | 100 | 0.0 | 9/2- | ||
| 789.1 11 ? | B | (15/2+) | 362.5 3 ? | 100 | 426.0 | 13/2+ | ||
| 1035.00 23 | B | (17/2-) | 558.6 2 | 100 | 476.40 | (13/2-) | ||
| 1035.6 11 ? | B | (17/2+) | 245.5 4 ? 611.1 5 ? | 44 13 100 41 | 789.1 426.0 | (15/2+) 13/2+ | ||
| 1672.7 4 ? | B | (21/2-) | 637.7 3 ? | 100 | 1035.00 | (17/2-) | ||
E(level): From a least squares fit to Eγ
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Sequence based on the Jπ=9/2- ground state | |||||||
| 0.0 | 9/2- | 0.55 s 1 % α ≤ 100 | |||||
| 476.40 10 | (13/2-) | 476.4 1 | 100 | 0.0 | 9/2- | ||
| 1035.00 23 | (17/2-) | 558.6 2 | 100 | 476.40 | (13/2-) | ||
| 1672.7 4 | (21/2-) | 637.7 3 ? | 100 | 1035.00 | (17/2-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Sequence based on the Jπ=13/2+ isomer | |||||||
| 426.0 10 | 13/2+ | 0.37 µs 5 | |||||
| 789.1 11 ? | (15/2+) | 362.5 3 ? | 100 | 426.0 | 13/2+ | ||
| 1035.6 11 ? | (17/2+) | 245.5 4 ? 611.1 5 ? | 44 13 100 41 | 789.1 426.0 | (15/2+) 13/2+ | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 161.9 | (7/2-) | 161.9 4 | [M1] | 3.64 | α=3.64 6, α(K)=2.93 5, α(L)=0.537 9, α(M)=0.1280 20, α(N)=0.0336 6, α(O)=0.00750 12, α(P)=0.001203 19, α(Q)=6.72×10-5 11 | |
| 337 | (5/2-) | ≈175 | [M1] | 2.92 | α=2.92, α(K)≈2.35, α(L)≈0.431, α(M)≈0.1026, α(N)≈0.0269, α(O)≈0.00601, α(P)≈0.000965, α(Q)≈5.38×10-5 | |
| 361 | 1/2+ | 43 ms 4 % α = 20 4 % IT = 80 4 | ≈20 | [M2] | 6.78×104 | α=6.78×104, α(L)≈4.87E4, α(M)≈1.426E4, α(N)≈3.86E3, α(O)≈844, α(P)≈124.4, α(Q)≈5.32 |
| 1/2+ | 43 ms 4 % α = 20 4 % IT = 80 4 | ≈195 | [E3] | 6.56 | α=6.56, α(K)≈0.400, α(L)≈4.48, α(M)≈1.269, α(N)≈0.336, α(O)≈0.0702, α(P)≈0.00921, α(Q)≈4.65×10-5 | |
| 426.0 | 13/2+ | 0.37 µs 5 | 426 1 | M2 | 0.749 | B(M2)(W.u.)=0.099 +16-12, α=0.749 12, α(K)=0.567 9, α(L)=0.1374 22, α(M)=0.0341 6, α(N)=0.00901 15, α(O)=0.00201 4, α(P)=0.000317 6, α(Q)=1.67×10-5 3 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 9/2- | 0.55 s 1 % α ≤ 100 | Q=-0.47 2, μ=+3.74 4 δ<r2>(203Fr,221Fr)=-1.5302 fm2 2 (stat) 168 (syst) (2017Wi11). Other (the same group): -1.530 fm2 8 (stat) 16 (syst) (2013Fl09,2014Ly01). |
| 361 | 1/2+ | 43 ms 4 % α = 20 4 % IT = 80 4 | Eα=7246 keV 5 (2013Ja06), supersedes 7227 keV 8 (2005Uu02). |
| E(level) | E(gamma) | Comments |
| 426.0 | 426 | M(γ): from K/(L+M+..)=3.3 4 (2013Ja06) |
DICT$ 169Tm(40Ar,6nγ)=169Tm(40Ar,6nγ)