ADOPTED LEVELS, GAMMAS for 158Tm
Author: N. Nica | Citation: Nucl. Data Sheets 141, 1 (2017) | Cutoff date: 1-Feb-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-2.69×103 keV 3 | S(n)= 8.07×103 keV 4 | S(p)= 2.58×103 keV 4 | Q(α)= 3.51×103 keV 3 | ||
| S(2n)= 1.801×104 keV 4 | S(2p)= 7.80×103 keV 4 | Q(EC)= 6.60×103 keV 3 | Q(ECp)= 8.4×102 keV 3 | ||
| Reference: 2017WA10 | |||||
| References: | |||
| A | 158Yb ε decay | B | (HI,xnγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A | 2- | 3.98 m 6 % ε = 100 | |||||
| 74.1 1 | A | (1)+ | 1.74 ns 4 | 74.1 1 | 100 | E1 | 0.0 | 2- |
| 0.0+X | B | (5+) | ≈ 20 ns | |||||
| 0.0+Y | B | (9-) | 16 ns 4 | |||||
| 129.3+Y 8 | B | (11-) | 129.3 8 | 100 15 | 0.0+Y | (9-) | ||
| 150.0+Y? | B | (10-) | ||||||
| 383.0+Y 9 | B | (12-) | 1.9 ps 6 | 233? 253.8 3 | 100 11 | D | 150.0+Y 129.3+Y | (10-) (11-) |
| 512.0+Y 9 | B | (13-) | 4.5 ps 7 | 129.3 8 382.5 5 | 243 15 100 | E2 | 383.0+Y 129.3+Y | (12-) (11-) |
| 811.5+Y 9 | B | (14-) | 1.8 ps 5 | 299.4 2 428.7 8 | 100 6 | D | 512.0+Y 383.0+Y | (13-) (12-) |
| 1028.5+Y 9 | B | (15-) | 0.8 ps 3 | 217.0 4 516.5 1 | 43 5 100 6 | D [E2] | 811.5+Y 512.0+Y | (14-) (13-) |
| 1356.1+Y 9 | B | (16-) | 0.6 ps 6 | 327.6 1 544.1 5 | 100 9 39 4 | D E2 | 1028.5+Y 811.5+Y | (15-) (14-) |
| 1639.3+Y 9 | B | (17-) | 1.2 ps 5 | 283.1 4 610.9 2 | 54 8 100 6 | D E2 | 1356.1+Y 1028.5+Y | (16-) (15-) |
| 1992.2+Y 10 | B | (18-) | 0.2 ps +4-2 | 353.0 2 636.1 2 | 100 10 <52 | D [E2] | 1639.3+Y 1356.1+Y | (17-) (16-) |
| 2320.5+Y 10 | B | (19-) | 0.5 ps +6-5 | 328.2 3 681.3 2 | 46 100 11 | D E2 | 1992.2+Y 1639.3+Y | (18-) (17-) |
| 2701.7+Y 10 | B | (20-) | 381.3 6 709.5 5 | <31 100 12 | E2 | 2320.5+Y 1992.2+Y | (19-) (18-) | |
| 2727.4+Y | B | (19+) | 734.9 | | 1992.2+Y | (18-) | ||
| 3013.6+Y | B | (20+) | 286.2 692.9 | | 2727.4+Y 2320.5+Y | (19+) (19-) | ||
| 3052.9+Y 10 | B | (21-) | 350.9 8 732.2 5 | <33 100 10 | E2 | 2701.7+Y 2320.5+Y | (20-) (19-) | |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 3058.3+Y | B | J | 737.8? | | 2320.5+Y | (19-) | ||
| 3279.2+Y | B | (21+) | 265.4 551.6 578 | | 3013.6+Y 2727.4+Y 2701.7+Y | (20+) (19+) (20-) | ||
| 3348.2+Y | B | (J+1) | 289.8 | | 3058.3+Y | J | ||
| 3463.3+Y | B | (22-) | 409.7 762.6 | | 3052.9+Y 2701.7+Y | (21-) (20-) | ||
| 3606.0+Y | B | (22+) | 326.9 592.4 | | 3279.2+Y 3013.6+Y | (21+) (20+) | ||
| 3654.8+Y | B | (J+2) | 306.7 596.5 | | 3348.2+Y 3058.3+Y | (J+1) J | ||
| 3838.1+Y 12 | B | (23-) | 375 785.2 6 | 100 | E2 | 3463.3+Y 3052.9+Y | (22-) (21-) | |
| 3901.9+Y | B | (23+) | 295.9 622.6 | | 3606.0+Y 3279.2+Y | (22+) (21+) | ||
| 3997.2+Y | B | (J+3) | 342.4 649 | | 3654.8+Y 3348.2+Y | (J+2) (J+1) | ||
| 4261+Y? | B | (24-) | 798? | | 3463.3+Y | (22-) | ||
| 4274.9+Y | B | (24+) | 372.9 668.9 | | 3901.9+Y 3606.0+Y | (23+) (22+) | ||
| 4326.8+Y | B | (J+4) | 329.4 672.1 | | 3997.2+Y 3654.8+Y | (J+3) (J+2) | ||
| 4598.8+Y | B | (25+) | 324.0 697.0 | | 4274.9+Y 3901.9+Y | (24+) (23+) | ||
| 4712.1+Y 16 | B | (25-) | 874 1 | 100 | E2 | 3838.1+Y | (23-) | |
| 4722.0+Y | B | (J+5) | 395.5 724.8 | | 4326.8+Y 3997.2+Y | (J+4) (J+3) | ||
| 5006.0+Y | B | (26+) | 407.1 731 | | 4598.8+Y 4274.9+Y | (25+) (24+) | ||
| 5071.3+Y | B | (J+6) | 349.5 744.2 | | 4722.0+Y 4326.8+Y | (J+5) (J+4) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 5361.2+Y | B | (27+) | 355 762.6 | | 5006.0+Y 4598.8+Y | (26+) (25+) | ||
| 5635.8+Y? | B | (27-) | 923.7? | | 4712.1+Y | (25-) | ||
| 5780.0+Y? | B | (28+) | 774? | | 5006.0+Y | (26+) | ||
| 6159.9+Y | B | (29+) | 798.7 | | 5361.2+Y | (27+) | ||
| 7032.8+Y | B | (31+) | 872.9 | | 6159.9+Y | (29+) | ||
| 7940.5+Y | B | (33+) | 907.7 | | 7032.8+Y | (31+) | ||
| 8820+Y | B | (35+) | 879 | | 7940.5+Y | (33+) | ||
| 9310+Y | B | (36+) | 490 | | 8820+Y | (35+) | ||
| 10280+Y? | B | (38+) | 970? | | 9310+Y | (36+) | ||
| 10357+Y? | B | 1047? | | 9310+Y | (36+) | |||
E(level): Values are from the individual decay and reaction data and the uncertainties for the levels above the (9-) level are relative to the (9-) level.
Jπ(level): Assignments from the (HI,xnγ) data are based on the observed and assumed quadrupole nature of the crossover γ’s and the assignment of Jπ=(9-) for the lowest observed level. This Jπ was deduced by 1981Dr07 based on alignment considerations in the neighboring nuclides 157Er and 157Ho.
T1/2(level): Unless noted otherwise, from (HI,xnγ) study of 1987Ga09 (by recoil distance method)
M(γ): Assignments from (HI,xnγ) studies are evaluator’s interpretation of the γ(θ) data of 1985Ho04 and the quadrupole transitions have been assigned as E2.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - π=- band, signature=1 | |||||||
| 0.0+Y | (9-) | 16 ns 4 | |||||
| 129.3+Y 8 | (11-) | 129.3 8 | 100 15 | 0.0+Y | (9-) | ||
| 512.0+Y 9 | (13-) | 4.5 ps 7 | |||||
| 1028.5+Y 9 | (15-) | 0.8 ps 3 | |||||
| 1639.3+Y 9 | (17-) | 1.2 ps 5 | 283.1 4 610.9 2 | 54 8 100 6 | D E2 | 1356.1+Y 1028.5+Y | (16-) (15-) |
| 2320.5+Y 10 | (19-) | 0.5 ps +6-5 | |||||
| 3052.9+Y 10 | (21-) | 350.9 8 732.2 5 | <33 100 10 | E2 | 2701.7+Y 2320.5+Y | (20-) (19-) | |
| 3838.1+Y 12 | (23-) | 375 785.2 6 | 100 | E2 | 3463.3+Y 3052.9+Y | (22-) (21-) | |
| 4712.1+Y 16 | (25-) | 874 1 | 100 | E2 | 3838.1+Y | (23-) | |
| 5635.8+Y | (27-) | 923.7? | | 4712.1+Y | (25-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - π=- band, signature=0 | |||||||
| 150.0+Y | (10-) | ||||||
| 383.0+Y 9 | (12-) | 1.9 ps 6 | 233? 253.8 3 | 100 11 | D | 150.0+Y 129.3+Y | (10-) (11-) |
| 811.5+Y 9 | (14-) | 1.8 ps 5 | |||||
| 1356.1+Y 9 | (16-) | 0.6 ps 6 | |||||
| 1992.2+Y 10 | (18-) | 0.2 ps +4-2 | 353.0 2 636.1 2 | 100 10 <52 | D [E2] | 1639.3+Y 1356.1+Y | (17-) (16-) |
| 2701.7+Y 10 | (20-) | ||||||
| 3463.3+Y | (22-) | 409.7 762.6 | | 3052.9+Y 2701.7+Y | (21-) (20-) | ||
| 4261+Y | (24-) | 798? | | 3463.3+Y | (22-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 3 - π=+ band, signature=1 | |||||||
| 2727.4+Y | (19+) | ||||||
| 3279.2+Y | (21+) | 265.4 551.6 578 | | 3013.6+Y 2727.4+Y 2701.7+Y | (20+) (19+) (20-) | ||
| 3901.9+Y | (23+) | ||||||
| 4598.8+Y | (25+) | ||||||
| 5361.2+Y | (27+) | 355 762.6 | | 5006.0+Y 4598.8+Y | (26+) (25+) | ||
| 6159.9+Y | (29+) | ||||||
| 7032.8+Y | (31+) | 872.9 | | 6159.9+Y | (29+) | ||
| 7940.5+Y | (33+) | 907.7 | | 7032.8+Y | (31+) | ||
| 8820+Y | (35+) | 879 | | 7940.5+Y | (33+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 4 - π=+ band, signature=0 | |||||||
| 3013.6+Y | (20+) | ||||||
| 3606.0+Y | (22+) | 326.9 592.4 | | 3279.2+Y 3013.6+Y | (21+) (20+) | ||
| 4274.9+Y | (24+) | ||||||
| 5006.0+Y | (26+) | ||||||
| 5780.0+Y | (28+) | 774? | | 5006.0+Y | (26+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 5 - band fragment | |||||||
| 3058.3+Y | J | ||||||
| 3348.2+Y | (J+1) | 289.8 | | 3058.3+Y | J | ||
| 3654.8+Y | (J+2) | ||||||
| 3997.2+Y | (J+3) | ||||||
| 4326.8+Y | (J+4) | 329.4 672.1 | | 3997.2+Y 3654.8+Y | (J+3) (J+2) | ||
| 4722.0+Y | (J+5) | ||||||
| 5071.3+Y | (J+6) | 349.5 744.2 | | 4722.0+Y 4326.8+Y | (J+5) (J+4) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 74.1 | (1)+ | 1.74 ns 4 | 74.1 1 | E1 | 0.731 | B(E1)(W.u.)=0.000189 5, α=0.731, α(K)=0.599 9, α(L)=0.1030 15, α(M)=0.0230 4, α(N)=0.00525 8, α(O)=0.000681 10, α(P)=2.56E-5 4 |
| 512.0+Y | (13-) | 4.5 ps 7 | 382.5 5 | E2 | 0.0352 | B(E2)(W.u.)=1.3×102 8, α=0.0352, α(K)=0.0267 4, α(L)=0.00650 10, α(M)=0.001512 23, α(N)=0.000349 6, α(O)=4.55E-5 7, α(P)=1.428E-6 21 |
| 1028.5+Y | (15-) | 0.8 ps 3 | 516.5 1 | [E2] | 0.01577 | B(E2)(W.u.)=2.6×102 10, α=0.01577, α(K)=0.01253 18, α(L)=0.00251 4, α(M)=0.000576 8, α(N)=0.0001335 19, α(O)=1.79E-5 3, α(P)=6.92E-7 10 |
| 1356.1+Y | (16-) | 0.6 ps 6 | 544.1 5 | E2 | 0.01384 | B(E2)(W.u.)=1.1×102 11, α=0.01384, α(K)=0.01106 16, α(L)=0.00216 3, α(M)=0.000494 7, α(N)=0.0001144 17, α(O)=1.545E-5 22, α(P)=6.13E-7 9 |
| 1639.3+Y | (17-) | 1.2 ps 5 | 610.9 2 | E2 | 0.01045 | B(E2)(W.u.)=7.×101 3, α=0.01045, α(K)=0.00844 12, α(L)=0.001556 22, α(M)=0.000354 5, α(N)=8.22E-5 12, α(O)=1.121E-5 16, α(P)=4.72E-7 7 |
| 1992.2+Y | (18-) | 0.2 ps +4-2 | 636.1 2 | [E2] | 0.00949 | B(E2)(W.u.)=1.1×102 +16-11, α=0.00949, α(K)=0.00770 11, α(L)=0.001393 20, α(M)=0.000317 5, α(N)=7.35E-5 11, α(O)=1.006E-5 15, α(P)=4.31E-7 6 |
| 2320.5+Y | (19-) | 0.5 ps +6-5 | 681.3 2 | E2 | 0.00809 | B(E2)(W.u.)=1.0×102 +11-10, α=0.00809, α(K)=0.00660 10, α(L)=0.001161 17, α(M)=0.000263 4, α(N)=6.11E-5 9, α(O)=8.40E-6 12, α(P)=3.71E-7 6 |
| 2701.7+Y | (20-) | 709.5 5 | E2 | 0.00738 | α=0.00738, α(K)=0.00604 9, α(L)=0.001044 15, α(M)=0.000236 4, α(N)=5.49×10-5 8, α(O)=7.58E-6 11, α(P)=3.39E-7 5 | |
| 3052.9+Y | (21-) | 732.2 5 | E2 | 0.00688 | α=0.00688, α(K)=0.00564 8, α(L)=0.000963 14, α(M)=0.000218 3, α(N)=5.06×10-5 8, α(O)=7.00E-6 10, α(P)=3.17E-7 5 | |
| 3838.1+Y | (23-) | 785.2 6 | E2 | 0.00589 | α=0.00589, α(K)=0.00485 7, α(L)=0.000809 12, α(M)=0.000182 3, α(N)=4.24×10-5 6, α(O)=5.89E-6 9, α(P)=2.74E-7 4 | |
| 4712.1+Y | (25-) | 874 1 | E2 | 0.00467 | α=0.00467, α(K)=0.00387 6, α(L)=0.000624 9, α(M)=0.0001401 20, α(N)=3.26×10-5 5, α(O)=4.56E-6 7, α(P)=2.19E-7 4 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 2- | 3.98 m 6 % ε = 100 | Q=+0.74 11, μ=+0.042 17 Δ<r2> values have been reported by 1986Al32, 1987Mi31, and 1988Al04 (all the same authors). From the latter, Δ<r2>(158-169)=1.002 fm2 7 directly from a table and Δ<r2>(158-160)=0.261 fm2 8 by comparison of two table entries. E(level): Δ<r2> values have been reported by 1986Al32, 1987Mi31, and 1988Al04 (all the same authors). From the latter, Δ<r2>(158-169)=1.002 fm2 7 directly from a table and Δ<r2>(158-160)=0.261 fm2 8 by comparison of two table entries. |
| 0.0+Y | (9-) | 16 ns 4 | E(level): π=- band, signature=1. |
| 129.3+Y | (11-) | E(level): π=- band, signature=1. | |
| 150.0+Y | (10-) | E(level): π=- band, signature=0. | |
| 383.0+Y | (12-) | 1.9 ps 6 | E(level): π=- band, signature=0. |
| 512.0+Y | (13-) | 4.5 ps 7 | E(level): π=- band, signature=1. |
| 811.5+Y | (14-) | 1.8 ps 5 | E(level): π=- band, signature=0. |
| 1028.5+Y | (15-) | 0.8 ps 3 | E(level): π=- band, signature=1. |
| 1356.1+Y | (16-) | 0.6 ps 6 | E(level): π=- band, signature=0. |
| 1639.3+Y | (17-) | 1.2 ps 5 | E(level): π=- band, signature=1. |
| 1992.2+Y | (18-) | 0.2 ps +4-2 | E(level): π=- band, signature=0. |
| 2320.5+Y | (19-) | 0.5 ps +6-5 | E(level): π=- band, signature=1. |
| 2701.7+Y | (20-) | E(level): π=- band, signature=0. | |
| 2727.4+Y | (19+) | E(level): π=+ band, signature=1. | |
| 3013.6+Y | (20+) | E(level): π=+ band, signature=0. | |
| 3052.9+Y | (21-) | E(level): π=- band, signature=1. | |
| 3058.3+Y | J | E(level): band fragment. | |
| 3279.2+Y | (21+) | E(level): π=+ band, signature=1. | |
| 3348.2+Y | (J+1) | E(level): band fragment. | |
| 3463.3+Y | (22-) | E(level): π=- band, signature=0. | |
| 3606.0+Y | (22+) | E(level): π=+ band, signature=0. | |
| 3654.8+Y | (J+2) | E(level): band fragment. | |
| 3838.1+Y | (23-) | E(level): π=- band, signature=1. | |
| 3901.9+Y | (23+) | E(level): π=+ band, signature=1. | |
| 3997.2+Y | (J+3) | E(level): band fragment. | |
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 4261+Y | (24-) | E(level): π=- band, signature=0. | |
| 4274.9+Y | (24+) | E(level): π=+ band, signature=0. | |
| 4326.8+Y | (J+4) | E(level): band fragment. | |
| 4598.8+Y | (25+) | E(level): π=+ band, signature=1. | |
| 4712.1+Y | (25-) | E(level): π=- band, signature=1. | |
| 4722.0+Y | (J+5) | E(level): band fragment. | |
| 5006.0+Y | (26+) | E(level): π=+ band, signature=0. | |
| 5071.3+Y | (J+6) | E(level): band fragment. | |
| 5361.2+Y | (27+) | E(level): π=+ band, signature=1. | |
| 5635.8+Y | (27-) | E(level): π=- band, signature=1. | |
| 5780.0+Y | (28+) | E(level): π=+ band, signature=0. | |
| 6159.9+Y | (29+) | E(level): π=+ band, signature=1. | |
| 7032.8+Y | (31+) | E(level): π=+ band, signature=1. | |
| 7940.5+Y | (33+) | E(level): π=+ band, signature=1. | |
| 8820+Y | (35+) | E(level): π=+ band, signature=1. |
| E(level) | E(gamma) | Comments |
| 74.1 | 74.1 | M(γ): From measured IK| x ray/Iγ and deduced limit on αK(exp) in 158Yb ε decay. |
| 129.3+Y | 129.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
| 512.0+Y | 129.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
The data are from 158Yb ε+β+ decay which only populates the 74-keV level and from the (HI,xnγ) reactions which populated primarily the levels above a Jπ=(9-) level of unknown energy.
Model calculations that may be of interest include (1986Al32,1987Ba07).