ADOPTED LEVELS, GAMMAS for 217Bi
Author: Balraj Singh | Citation: Nucl. Data Sheets 147, 382 (2018) | Cutoff date: 1-DEC-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2846 keV 19 | S(n)= 5215 keV 21 | S(p)= 6040 keV SY | Q(α)= 4520 keV 30 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 9Be(238U,xγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A | (9/2-) | 98.5 s 13 % β- = 100 | |||||
| 744 1 | A | (13/2-) | 744 | 100 | [E2] | 0.0 | (9/2-) | |
| 1236 1 | A | (17/2-) | 492 | 100 | [E2] | 744 | (13/2-) | |
| 1429 2 | A | (15/2-,17/2-) | 685 | 100 | [M1,E2] | 744 | (13/2-) | |
| 1436 2 | A | (21/2-) | 200 | 100 | [E2] | 1236 | (17/2-) | |
| 1436+X | A | (25/2-) | 3.0 µs 2 % IT = 100 | X | | 1436 | (21/2-) | |
E(level): From Eγ data, assuming 1 keV energy uncertainty for each γ ray
Jπ(level): From 2014Go20 for excited states based on systematics of neighboring nuclides
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 744 | (13/2-) | 744 | [E2] | 0.0127 | α=0.0127 | |
| 1236 | (17/2-) | 492 | [E2] | 0.0319 | α=0.0319 | |
| 1429 | (15/2-,17/2-) | 685 | [M1,E2] | 0.033 | α=0.033 18 | |
| 1436 | (21/2-) | 200 | [E2] | 0.449 | α=0.449 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (9/2-) | 98.5 s 13 % β- = 100 | Only β decay has been observed. The alpha-decay branch is expected to be negligible, if any. Calculations by 1997Mo25 give 1×109 s for its partial half-life for α decay, and >100 s for β decay. 2003Bo06 calculated T1/2(total β) by using different models. E(level): Only β decay has been observed. The alpha-decay branch is expected to be negligible, if any. Calculations by 1997Mo25 give 1×109 s for its partial half-life for α decay, and >100 s for β decay. 2003Bo06 calculated T1/2(total β) by using different models. |
| 744 | (13/2-) | E(level): Member of multiplet with configuration=πh9/2~#(216Pb core). | |
| 1236 | (17/2-) | E(level): Member of multiplet with configuration=πh9/2~#(216Pb core). | |
| 1436 | (21/2-) | E(level): Member of multiplet with configuration=πh9/2~#(216Pb core). | |
| 1436+X | (25/2-) | 3.0 µs 2 % IT = 100 | Configuration=πh9/2~#ν(g9/22)8+. E(level): Member of multiplet with configuration=πh9/2~#(216Pb core). |
| E(level) | E(gamma) | Comments |
| 1436+X | X | E(γ): x=20-90 keV (2014Go20) based on no K-x rays which can be assigned to a transition from this level, and systematics of lighter odd-even Bi isotopes |
217Bi evaluated by B. Singh
1998RyZY, 2003Ku25: 217Bi produced in 232Th(p,X),E=pulsed 1 GeV; 254- and 264-keV gammas in 217Po and K-x rays of Polonium observed from β decay of 217Bi. Later studies of decay of 217Bi: 2014Mo02, 2014Mo15
Mass measurement: 2012Ch19
Q-value: Estimated uncertainty=200 for S(p) (2017Wa10)
Q-value: S(2n)=9042 19, S(2p)=15760 300 (syst) (2017Wa10)