ADOPTED LEVELS, GAMMAS for 136Sb
Author: E.A. Mccutchan | Citation: Nucl. Data Sheets 152, 331 (2018) | Cutoff date: 1-Apr-2018
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=9918 keV 6 | S(n)= 2888 keV 6 | S(p)= 11164 keV 7 | Q(α)= -4.52×103 keV 6 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 9Be(238U,Fγ) | B | 241Pu(n,Fγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | AB | (1-) | 0.923 s 14 % β- = 100 % β-n = 18.5 18 % β-2n < 1 | |||||
| 43.4 3 | AB | (2-) | 43.4 3 | 100 | (M1) | 0 | (1-) | |
| 215.9 4 | AB | (4-) | 172.5 3 | 100 | E2 | 43.4 | (2-) | |
| 269.3 5 | AB | (6-) | 540 ns 30 % IT = 100 | 53.4 3 | 100 | (E2) | 215.9 | (4-) |
E(level): From Eγ.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 43.4 | (2-) | 43.4 3 | (M1) | 6.90 | α=6.90 18, α(K)=5.94 15, α(L)=0.774 20, α(M)=0.153 4, α(N)=0.0296 8, α(O)=0.00290 8 | |
| 215.9 | (4-) | 172.5 3 | E2 | 0.241 | α=0.241, α(K)=0.192 3, α(L)=0.0393 7, α(M)=0.00798 13, α(N)=0.001481 24, α(O)=0.0001218 19 | |
| 269.3 | (6-) | 540 ns 30 % IT = 100 | 53.4 3 | (E2) | 15.6 | B(E2)(W.u.)=3.5 4, α=15.6 4, α(K)=7.40 15, α(L)=6.57 20, α(M)=1.37 5, α(N)=0.247 8, α(O)=0.0168 5 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 43.4 | (2-) | XREF: B(53.4). | |
| 215.9 | (4-) | XREF: B(226.4). | |
| 269.3 | (6-) | 540 ns 30 % IT = 100 | XREF: B(277.8). |
| E(level) | E(gamma) | Comments |
| 43.4 | 43.4 | M(γ): from intensity balance in 9Be(238U,Fγ) |
| 215.9 | 172.5 | M(γ): from α(K)exp. |
| 269.3 | 53.4 | M(γ): from intensity balance in 9Be(238U,Fγ) |
Levels: Evaluator adopts level scheme proposed by 2015Lo08 in 9Be(238U,Fγ). An alternative scheme is given by 2007Si27 in 241Pu(n,Fγ), where the cascade depopulating the isomer is given by 51.4γ -173.0γ - 53.4γ, resulting in an isomer excitation energy of 277.8-keV. 2015Lo08 find no evidence for the 51.4γ, however, identify a new 43.4γ and give an alternative cascade ordering of 53.4γ-173γ-43.4γ.
Q-value: S(2n)=6629 6; S(2p)=27420 syst 300; Q(β-n)=5151 6 (2017Wa10)