ADOPTED LEVELS, GAMMAS for 138Pm
Author: Jun Chen | Citation: Nucl. Data Sheets 146, 1 (2017) | Cutoff date: 30-Sep-2017
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-3440 keV 30 | S(n)= 8940 keV 30 | S(p)= 2640 keV 30 | Q(α)= 1160 keV 30 | ||
Reference: 2017WA10 |
References: | |||
A | 138Sm ε decay | B | 115In(28Si,2P3NG) |
C | 116Cd(27Al,5nγ) | D | 124Te(19F,5nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0? | (1+) | 10 s 2 % ε = 100 | ||||||
X | BCD | (5-) | 3.24 m 5 % ε = 100 | |||||
150.02+X 10 | BCD | (6-) | 150.0 1 | 100 | D | X | (5-) | |
327.45+X 13 | BCD | (6-) | 177.4 1 | 100 | D+Q | 150.02+X | (6-) | |
410.75+X 13 | BCD | (7-) | 260.8 1 411.0 4 | 100 4 <33 | D Q | 150.02+X X | (6-) (5-) | |
584.26+X 15 | BCD | (8+) | 21 ns 5 | 173.6 1 | 100 | D | 410.75+X | (7-) |
618.41+X 14 | BCD | (8-) | 468.3 1 | 100 | Q | 150.02+X | (6-) | |
704.77+X 17 | BCD | (9+) | 120.6 1 | 100 | D | 584.26+X | (8+) | |
762.89+X 14 | BCD | (7-) | 178.3 2 ? 352.2 1 435.4 1 | 100 10 92 7 | D+Q D | 584.26+X 410.75+X 327.45+X | (8+) (7-) (6-) | |
1044.67+X 16 | BCD | (9-) | 426.2 1 633.6 4 | 100 7 75 9 | D Q | 618.41+X 410.75+X | (8-) (7-) | |
1061.52+X 18 | BCD | (10+) | 356.9 1 | 100 | D | 704.77+X | (9+) | |
1088.6+X 3 | B D | (7-) | 938.8 4 | 100 | D | 150.02+X | (6-) | |
1104.68+X 14 | B D | (7-) | 954.7 1 | 100 | D | 150.02+X | (6-) | |
1164.76+X 17 | BCD | (9-) | 401.9 1 459.6 4 580.6 | 100 4 7.2 13 13.0 14 | Q D | 762.89+X 704.77+X 584.26+X | (7-) (9+) (8+) | |
1236.75+X 16 | B D | (8-) | 132.1 1 148.4 4 618.3 4 825.2 4 | 100 19 65 13 51 6 65 6 | D D D+Q D+Q | 1104.68+X 1088.6+X 618.41+X 410.75+X | (7-) (7-) (8-) (7-) | |
1383.36+X 17 | BCD | (10-) | 764.9 1 | 100 | Q | 618.41+X | (8-) | |
1411.12+X 18 | BCD | (11+) | 349.5 1 706.3 1 | 100 5 85 5 | D Q | 1061.52+X 704.77+X | (10+) (9+) | |
1464.05+X 19 | B D | (9-) | 227.3 1 | 100 | D | 1236.75+X | (8-) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1615.91+X 19 | B | (10-) | 554.6 1 | 100 | 1061.52+X | (10+) | ||
1700.55+X 22 | B D | (10-) | 236.5 1 | 100 | D | 1464.05+X | (9-) | |
1858.35+X 17 | BCD | (11-) | 474.4 4 813.6 1 | 34 4 100 8 | D Q | 1383.36+X 1044.67+X | (10-) (9-) | |
1863.16+X 19 | BCD | (11-) | 452 1 698.4 1 800.8 10 | 15 3 100 14 12 2 | Q | 1411.12+X 1164.76+X 1061.52+X | (11+) (9-) (10+) | |
1888.16+X 19 | BCD | (12+) | 477.0 1 826.7 1 | 100 6 73 9 | D Q | 1411.12+X 1061.52+X | (11+) (10+) | |
2096.75+X 24 | B D | (11-) | 396.2 1 | 100 | D | 1700.55+X | (10-) | |
2280.34+X 20 | BCD | (13+) | 392.0 4 869.1 1 | 100 8 87 6 | Q | 1888.16+X 1411.12+X | (12+) (11+) | |
2367.1+X 4 | BCD | (12-) | 983.7 4 | 100 | 1383.36+X | (10-) | ||
2459.56+X 22 | B D | (11+) | 596.4 1 | 100 | D+Q | 1863.16+X | (11-) | |
2473.86+X 22 | BCD | (12-) | 586.1 610.7 1 | 12.3 14 100 6 | D | 1888.16+X 1863.16+X | (12+) (11-) | |
2532.1+X 3 | B D | (12-) | 435.4 1 | 100 | 2096.75+X | (11-) | ||
2628.70+X 19 | B | (12-) | 1013.0 1 | 100 | 1615.91+X | (10-) | ||
2784.3+X 3 | D | (13-) | 687.5 | 100 | 2096.75+X | (11-) | ||
2795.77+X 22 | BCD | (13-) | 337 1 ? 932.6 1 | <14 100 7 | Q | 2459.56+X 1863.16+X | (11+) (11-) | |
2825.58+X 25 | BCD | (14+) | 545.6 1 938.1 5 | 33 4 100 7 | D Q | 2280.34+X 1888.16+X | (13+) (12+) | |
2832.90+X 18 | BCD | (13-) | 465.5 10 974.5 1 | <15 100 12 | Q | 2367.1+X 1858.35+X | (12-) (11-) | |
2869.85+X 21 | B | (13-) | 241.3 1 1010.4 4 | <100 >17 | 2628.70+X 1858.35+X | (12-) (11-) | ||
3004.46+X 24 | BCD | (13+) | 544.9 1 | 100 | Q | 2459.56+X | (11+) | |
3050.8+X 5 | B D | (13-) | 518.6 4 | 100 | 2532.1+X | (12-) | ||
3064.05+X 19 | BCD | (14-) | 195.6 4 231.1 1 435.4 1 696 1 ? 782.2 4 | >23 >63 <100 >7 >16 | D+Q D | 2869.85+X 2832.90+X 2628.70+X 2367.1+X 2280.34+X | (13-) (13-) (12-) (12-) (13+) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3072.35+X 24 | BCD | (14-) | 276 1 598.5 1 | <7 100 7 | Q | 2795.77+X 2473.86+X | (13-) (12-) | |
3183.1+X 3 | D | (14-) | 398.8 1 651.0 1 | 100 14 43 14 | 2784.3+X 2532.1+X | (13-) (12-) | ||
3276.0+X 3 | BCD | (15+) | 451.0 1 995.2 1 | <100 >97 | Q | 2825.58+X 2280.34+X | (14+) (13+) | |
3305.35+X 21 | BCD | (15-) | 241.3 1 | 100 | 3064.05+X | (14-) | ||
3593.35+X 24 | BCD | (16-) | 288.0 1 | 100 | D | 3305.35+X | (15-) | |
3648.0+X 11 | D | (15+) | 643.5 | 100 | 3004.46+X | (13+) | ||
3651.0+X 8 | D | (15-) | 468.1 599.9 | 100 20 <100 | 3183.1+X 3050.8+X | (14-) (13-) | ||
3771.8+X 3 | BCD | (16-) | 699.4 1 | 100 | 3072.35+X | (14-) | ||
3852.0+X 4 | BCD | (16+) | 576.3 4 1025.9 4 | 43 7 100 2 | Q | 3276.0+X 2825.58+X | (15+) (14+) | |
3975.9+X 3 | BCD | (17-) | 382.6 1 | 100 | D | 3593.35+X | (16-) | |
4196.0+X 13 | D | (16-) | 545.0 | 100 | 3651.0+X | (15-) | ||
4338.0+X 8 | BCD | (17+) | 485 1 1063 1 | | 3852.0+X 3276.0+X | (16+) (15+) | ||
4374.8+X 3 | BCD | (18-) | 398.8 1 | 100 | 3975.9+X | (17-) | ||
4406.7+X 11 | D | (18+) | 554.7 | 100 | Q | 3852.0+X | (16+) | |
4536.6+X 11 | D | (17+) | 764.8 | 100 | 3771.8+X | (16-) | ||
4623.5+X 5 | BCD | (18-) | 851.7 4 | 100 | Q | 3771.8+X | (16-) | |
4869.3+X 3 | B D | (19-) | 494.5 1 895 1 | 100 16 32 13 | 4374.8+X 3975.9+X | (18-) (17-) | ||
4922.0+X 11 | B | (18+) | 584 1 ? 1070 1 | | 4338.0+X 3852.0+X | (17+) (16+) | ||
5133.3+X 11 | B D | (20+) | 726.6 1 | 100 | Q | 4406.7+X | (18+) | |
5386.1+X 5 | B | (20-) | 516.8 4 1013.0 4 ? | 96 11 100 30 | 4869.3+X 4374.8+X | (19-) (18-) | ||
5456.4+X? | B | (19+) | 534 1 ? 1118 1 ? | 100 100 | 4922.0+X 4338.0+X | (18+) (17+) | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
5695.5+X 11 | B D | (20-) | 1072 1 | 100 | 4623.5+X | (18-) | ||
5995.0+X 11 | B D | (22+) | 861.7 1 | 100 | Q | 5133.3+X | (20+) | |
6864.1+X 11 | C | 869.1 1 | 100 | 5995.0+X | (22+) |
E(level): From a least-squares fit to γ-ray energies. For fitting purpose only, uncertainties of 451.0γ, 545.6γ, and 995.2γ are increased to 0.2 keV due to poor fit.
Jπ(level): All assignments except for isomers are based on the assignment of Jπ=8+ to the bandhead of the yrast band together with deduced γ-ray multipolarities and band structures
M(γ): Deduced based on measured DCO ratios in 115In(28Si,2p3nγ) (1998Pr04) and in 124Te(19F,5nγ) (2015Li15)
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - πh11/2ν1/2[400]. | |||||||
327.45+X 13 | (6-) | ||||||
762.89+X 14 | (7-) | ||||||
1164.76+X 17 | (9-) | 401.9 1 459.6 4 580.6 | 100 4 7.2 13 13.0 14 | Q D | 762.89+X 704.77+X 584.26+X | (7-) (9+) (8+) | |
1863.16+X 19 | (11-) | 452 1 698.4 1 800.8 10 | 15 3 100 14 12 2 | Q | 1411.12+X 1164.76+X 1061.52+X | (11+) (9-) (10+) | |
2795.77+X 22 | (13-) | 337 1 ? 932.6 1 | <14 100 7 | Q | 2459.56+X 1863.16+X | (11+) (11-) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Band based on (12-). | |||||||
2473.86+X 22 | (12-) | ||||||
3072.35+X 24 | (14-) | ||||||
3771.8+X 3 | (16-) | 699.4 1 | 100 | 3072.35+X | (14-) | ||
4623.5+X 5 | (18-) | 851.7 4 | 100 | Q | 3771.8+X | (16-) | |
5695.5+X 11 | (20-) | 1072 1 | 100 | 4623.5+X | (18-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - Band based on (11+). | |||||||
2459.56+X 22 | (11+) | ||||||
3004.46+X 24 | (13+) | ||||||
3648.0+X 11 | (15+) | 643.5 | 100 | 3004.46+X | (13+) | ||
4536.6+X 11 | (17+) | 764.8 | 100 | 3771.8+X | (16-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 4 - Configuration=πh11/2~#νh11/2 α=1. | |||||||
704.77+X 17 | (9+) | ||||||
1411.12+X 18 | (11+) | ||||||
2280.34+X 20 | (13+) | 392.0 4 869.1 1 | 100 8 87 6 | Q | 1888.16+X 1411.12+X | (12+) (11+) | |
3276.0+X 3 | (15+) | 451.0 1 995.2 1 | <100 >97 | Q | 2825.58+X 2280.34+X | (14+) (13+) | |
4338.0+X 8 | (17+) | 485 1 1063 1 | | 3852.0+X 3276.0+X | (16+) (15+) | ||
5456.4+X | (19+) | 534 1 ? 1118 1 ? | 100 100 | 4922.0+X 4338.0+X | (18+) (17+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 5 - Configuration=πh11/2~#νh11/2 α=0. | |||||||
584.26+X 15 | (8+) | 21 ns 5 | |||||
1061.52+X 18 | (10+) | ||||||
1888.16+X 19 | (12+) | 477.0 1 826.7 1 | 100 6 73 9 | D Q | 1411.12+X 1061.52+X | (11+) (10+) | |
2825.58+X 25 | (14+) | 545.6 1 938.1 5 | 33 4 100 7 | D Q | 2280.34+X 1888.16+X | (13+) (12+) | |
3852.0+X 4 | (16+) | 576.3 4 1025.9 4 | 43 7 100 2 | Q | 3276.0+X 2825.58+X | (15+) (14+) | |
4922.0+X 11 | (18+) | 584 1 ? 1070 1 | | 4338.0+X 3852.0+X | (17+) (16+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 6 - Band based on 18+ | |||||||
4406.7+X 11 | (18+) | ||||||
5133.3+X 11 | (20+) | ||||||
5995.0+X 11 | (22+) | 861.7 1 | 100 | Q | 5133.3+X | (20+) | |
6864.1+X 11 | 869.1 1 | 100 | 5995.0+X | (22+) | |||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 7 - π5/2[413]~#ν9/2[514] | |||||||
618.41+X 14 | (8-) | ||||||
1044.67+X 16 | (9-) | ||||||
1383.36+X 17 | (10-) | 764.9 1 | 100 | Q | 618.41+X | (8-) | |
1858.35+X 17 | (11-) | 474.4 4 813.6 1 | 34 4 100 8 | D Q | 1383.36+X 1044.67+X | (10-) (9-) | |
2367.1+X 4 | (12-) | 983.7 4 | 100 | 1383.36+X | (10-) | ||
2832.90+X 18 | (13-) | 465.5 10 974.5 1 | <15 100 12 | Q | 2367.1+X 1858.35+X | (12-) (11-) | |
3064.05+X 19 | (14-) | 195.6 4 231.1 1 435.4 1 696 1 ? 782.2 4 | >23 >63 <100 >7 >16 | D+Q D | 2869.85+X 2832.90+X 2628.70+X 2367.1+X 2280.34+X | (13-) (13-) (12-) (12-) (13+) | |
3305.35+X 21 | (15-) | 241.3 1 | 100 | 3064.05+X | (14-) | ||
3593.35+X 24 | (16-) | 288.0 1 | 100 | D | 3305.35+X | (15-) | |
3975.9+X 3 | (17-) | 382.6 1 | 100 | D | 3593.35+X | (16-) | |
4374.8+X 3 | (18-) | 398.8 1 | 100 | 3975.9+X | (17-) | ||
4869.3+X 3 | (19-) | 494.5 1 895 1 | 100 16 32 13 | 4374.8+X 3975.9+X | (18-) (17-) | ||
5386.1+X 5 | (20-) | 516.8 4 1013.0 4 ? | 96 11 100 30 | 4869.3+X 4374.8+X | (19-) (18-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 8 - π3/2[411]~#νh11/2 | |||||||
1236.75+X 16 | (8-) | ||||||
1464.05+X 19 | (9-) | ||||||
1700.55+X 22 | (10-) | 236.5 1 | 100 | D | 1464.05+X | (9-) | |
2096.75+X 24 | (11-) | 396.2 1 | 100 | D | 1700.55+X | (10-) | |
2532.1+X 3 | (12-) | 435.4 1 | 100 | 2096.75+X | (11-) | ||
3050.8+X 5 | (13-) | 518.6 4 | 100 | 2532.1+X | (12-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 9 - Band based on (13-) | |||||||
2784.3+X 3 | (13-) | ||||||
3183.1+X 3 | (14-) | ||||||
3651.0+X 8 | (15-) | 468.1 599.9 | 100 20 <100 | 3183.1+X 3050.8+X | (14-) (13-) | ||
4196.0+X 13 | (16-) | 545.0 | 100 | 3651.0+X | (15-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (1+) | 10 s 2 % ε = 100 | Q(ε)=7090 100 (1983Al06). |
327.45+X | (6-) | E(level): πh11/2ν1/2[400]. | |
584.26+X | (8+) | 21 ns 5 | E(level): Configuration=πh11/2~#νh11/2 α=0. |
618.41+X | (8-) | E(level): π5/2[413]~#ν9/2[514]. | |
704.77+X | (9+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
762.89+X | (7-) | E(level): πh11/2ν1/2[400]. | |
1044.67+X | (9-) | E(level): π5/2[413]~#ν9/2[514]. | |
1061.52+X | (10+) | E(level): Configuration=πh11/2~#νh11/2 α=0. | |
1164.76+X | (9-) | E(level): πh11/2ν1/2[400]. | |
1236.75+X | (8-) | E(level): π3/2[411]~#νh11/2. | |
1383.36+X | (10-) | E(level): π5/2[413]~#ν9/2[514]. | |
1411.12+X | (11+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
1464.05+X | (9-) | E(level): π3/2[411]~#νh11/2. | |
1700.55+X | (10-) | E(level): π3/2[411]~#νh11/2. | |
1858.35+X | (11-) | E(level): π5/2[413]~#ν9/2[514]. | |
1863.16+X | (11-) | E(level): πh11/2ν1/2[400]. | |
1888.16+X | (12+) | E(level): Configuration=πh11/2~#νh11/2 α=0. | |
2096.75+X | (11-) | E(level): π3/2[411]~#νh11/2. | |
2280.34+X | (13+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
2367.1+X | (12-) | E(level): π5/2[413]~#ν9/2[514]. | |
2459.56+X | (11+) | E(level): Band based on (11+). | |
2473.86+X | (12-) | E(level): Band based on (12-). | |
2532.1+X | (12-) | E(level): π3/2[411]~#νh11/2. | |
2784.3+X | (13-) | E(level): Band based on (13-). | |
2795.77+X | (13-) | E(level): πh11/2ν1/2[400]. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
2825.58+X | (14+) | E(level): Configuration=πh11/2~#νh11/2 α=0. | |
2832.90+X | (13-) | E(level): π5/2[413]~#ν9/2[514]. | |
3004.46+X | (13+) | E(level): Band based on (11+). | |
3050.8+X | (13-) | E(level): π3/2[411]~#νh11/2. | |
3064.05+X | (14-) | E(level): π5/2[413]~#ν9/2[514]. | |
3072.35+X | (14-) | E(level): Band based on (12-). | |
3183.1+X | (14-) | E(level): Band based on (13-). | |
3276.0+X | (15+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
3305.35+X | (15-) | E(level): π5/2[413]~#ν9/2[514]. | |
3593.35+X | (16-) | E(level): π5/2[413]~#ν9/2[514]. | |
3648.0+X | (15+) | E(level): Band based on (11+). | |
3651.0+X | (15-) | E(level): Band based on (13-). | |
3771.8+X | (16-) | E(level): Band based on (12-). | |
3852.0+X | (16+) | E(level): Configuration=πh11/2~#νh11/2 α=0. | |
3975.9+X | (17-) | E(level): π5/2[413]~#ν9/2[514]. | |
4196.0+X | (16-) | E(level): Band based on (13-). | |
4338.0+X | (17+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
4374.8+X | (18-) | E(level): π5/2[413]~#ν9/2[514]. | |
4406.7+X | (18+) | E(level): Band based on 18+. | |
4536.6+X | (17+) | E(level): Band based on (11+). | |
4623.5+X | (18-) | E(level): Band based on (12-). | |
4869.3+X | (19-) | E(level): π5/2[413]~#ν9/2[514]. | |
4922.0+X | (18+) | E(level): Configuration=πh11/2~#νh11/2 α=0. | |
5133.3+X | (20+) | E(level): Band based on 18+. | |
5386.1+X | (20-) | E(level): π5/2[413]~#ν9/2[514]. | |
E(level) | Jπ(level) | T1/2(level) | Comments |
5456.4+X | (19+) | E(level): Configuration=πh11/2~#νh11/2 α=1. | |
5695.5+X | (20-) | E(level): Band based on (12-). | |
5995.0+X | (22+) | E(level): Band based on 18+. | |
6864.1+X | E(level): Band based on 18+. |
E(level) | E(gamma) | Comments |
150.02+X | 150.0 | M(γ): most likely M1 character |
410.75+X | 411.0 | E(γ): unweighted average of 410.6 1 from 115In(28Si,2p3nγ) and 411.3 2 from 116Cd(27Al,5nγ). |
584.26+X | 173.6 | M(γ): 1990Be28 in 116Cd(27Al,5nγ) assign E1 from intensity arguments |
618.41+X | 468.3 | E(γ): weighted average of 468.2 1 from 115In(28Si,2p3nγ) and 468.5 2 from 116Cd(27Al,5nγ). |
762.89+X | 178.3 | E(γ): observed in 116Cd(27Al,5nγ) (1990Be28) only I(γ): Iγ(178.3γ)/I(352.2γ)=(100 5)/(68 5) (1990Be28) | 352.2 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 435.4 | I(γ): From 124Te(19F,5nγ) (2015Li15). |
1236.75+X | 132.1 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 148.4 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 618.3 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 825.2 | I(γ): From 124Te(19F,5nγ) (2015Li15). |
1411.12+X | 706.3 | I(γ): weighted average of 92 5 from 115In(28Si,2p3nγ), and 81 4 from 124Te(19F,5nγ). Other: 65 5 from 116Cd(27Al,5nγ), |
1615.91+X | 554.6 | E(γ): doubly placed in 115In(28Si,2p3nγ) (1998Pr04); placed differently in 116Cd(27Al,5nγ) (1990Be28) and 124Te(19F,5nγ) (2015Li15) |
1858.35+X | 474.4 | I(γ): Other: 59 5 in 124Te(19F,5nγ) (2015Li15) |
1863.16+X | 452 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 698.4 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 800.8 | I(γ): From 124Te(19F,5nγ) (2015Li15). |
1888.16+X | 477.0 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 826.7 | I(γ): weighted average of 67 7 from 116Cd(27Al,5nγ), and 87 11 from 124Te(19F,5nγ). Other: <77 from 115In(28Si,2p3nγ). From 124Te(19F,5nγ) (2015Li15). |
2280.34+X | 392.0 | E(γ): unweighted average of 391.6 1 from 115In(28Si,2p3nγ) and 392.4 2 from 116Cd(27Al,5nγ). I(γ): Others: 100 8 in 116Cd(27Al,5nγ), 26 3 in 115In(28Si,2p3nγ). From 124Te(19F,5nγ) (2015Li15). | 869.1 | E(γ): also placed from a level at E=6864+x with Jπ=(21+) in 115In(28Si,2p3nγ). I(γ): weighted average of 92 8 from 116Cd(27Al,5nγ), and 84 6 from 124Te(19F,5nγ). Other: <100 from 115In(28Si,2p3nγ). From 124Te(19F,5nγ) (2015Li15). |
2473.86+X | 586.1 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 610.7 | E(γ): weighted average of 610.6 1 from 115In(28Si,2p3nγ) and 610.9 2 from 116Cd(27Al,5nγ). I(γ): From 124Te(19F,5nγ) (2015Li15). |
2628.70+X | 1013.0 | E(γ): observed in 115In(28Si,2p3nγ) only |
2784.3+X | 687.5 | E(γ): from 124Te(19F,5nγ) only |
E(level) | E(gamma) | Comments |
2825.58+X | 938.1 | E(γ): unweighted average of 937.6 1 from 115In(28Si,2p3nγ) and 938.6 2 from 116Cd(27Al,5nγ). |
2869.85+X | 241.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
3183.1+X | 398.8 | E(γ): energy value is from 1998Pr04 in 115In(28Si,2p3nγ), placement is from 124Te(19F,5nγ) by 2015Li15. 1998Pr04 placed this γ ray from a level at E=2532+x, which is not adopted. I(γ): From 124Te(19F,5nγ) (2015Li15). | 651.0 | E(γ): energy value is from 1998Pr04 in 115In(28Si,2p3nγ), placement is from 124Te(19F,5nγ) by 2015Li15. 1998Pr04 placed this γ ray from a level at E=3702+x, which is not adopted. I(γ): From 124Te(19F,5nγ) (2015Li15). |
3276.0+X | 451.0 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
3305.35+X | 241.3 | E(γ): Multiply placed with undivided intensity I(γ): Multiply placed with undivided intensity |
3648.0+X | 643.5 | E(γ): from 124Te(19F,5nγ) (2015Li15) only |
3852.0+X | 576.3 | I(γ): From 124Te(19F,5nγ) (2015Li15). | 1025.9 | I(γ): From 124Te(19F,5nγ) (2015Li15). |
4196.0+X | 545.0 | E(γ): from 124Te(19F,5nγ) (2015Li15) only |
4338.0+X | 485 | E(γ): weighted average of 486 1 from 115In(28Si,2p3nγ) and 484 1 from 116Cd(27Al,5nγ). |
4536.6+X | 764.8 | E(γ): from 124Te(19F,5nγ) (2015Li15) |
5133.3+X | 726.6 | E(γ): energy value is from 1998Pr04 in 115In(28Si,2p3nγ), placement is from 124Te(19F,5nγ) by 2015Li15. 1998Pr04 placed this γ ray from a level at E=4579+x, which is not adopted. |
5695.5+X | 1072 | E(γ): other: 1075.0 from 124Te(19F,5nγ) |
5995.0+X | 861.7 | M(γ): from 124Te(19F,5nγ) (2015Li15), but Mult=d from DCO ratio in 115In(28Si,2p3nγ) (1998Pr04) is inconsistent |
Observation of 138Sm ε decay to 138Pm was reported in 1973WeZK; the first study on the decay of 138Pm was done by 1973VaYZ.
Experimental works on 138Pm:
1983Al06, report a ε/β+ decay level with T1/2=10 s 2 and a Q(ε)=7090 keV 100
1983GaZT, probably a preliminary version of 1983Al06; report the 10 s isomer and assign a Jπ=1+ to it. These authors also list the following γ ray energies: 340 keV (Iγ=100), 440 keV (Iγ=60), 540 keV (Iγ=40). The 540 keV line presumably corresponds to the 520 keV 2+ to g.s. γ in 138Nd, while the other two can not be consistently identified.
2000Be42, using a Penning Trap, observed only the 3.24 min level, indicating that the 10 s level should have been observed, but was not. Their measured mass excess is in agreement with the independent measurement of 2000Ra23.
2015Li15, 1998Pr04, 1990Be28, studied the high-spin levels of 138Pm. The lowest energy state that was observed was assigned a Jπ=5-. Unfortunately, these works did not study the decay of this level.
Based on these findings, the 10 s level is tentatively adopted as g.s. without a spin assignment. The 3.24 min level is firmly adopted as an isomer without spin assignment. The lowest level observed in the high-spin work is assigned an unknown energy, even though it is likely to correspond to the 3.24 min level.
Mass measurements: 2000Be42, 2000Ra23, 1997Be63
Q-value: S(2n)=19910 70, S(2p)=8180 30, Q(εp)=972 29, Q(β+)=7078 29 (2017Wa10)