ADOPTED LEVELS, GAMMAS for 155Pm
Author: N. Nica | Citation: Nucl. Data Sheets 160, 1 (2019) | Cutoff date: 21-Oct-2019
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=3251 keV 5 | S(n)= 6.50×103 keV 5 | S(p)= 8.40×103 keV 5 | Q(α)= -2585 keV 13 | ||
S(2n)= 12435 keV 5 | S(2p)= 19949 keV 5 | ||||
Reference: 2017WA10 |
References: | |||
A | 155Nd β- decay | B | 252Cf SF decay |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | AB | 5/2- | 41.5 s 2 % β- = 100 | |||||
67.435 14 | AB | (7/2)- | 67.432 15 | 100 | M1 | 0.0 | 5/2- | |
154.594 24 | AB | (9/2)- | 87.155 20 154.7 3 | 100 10 12 4 | M1(+E2) | 67.435 0.0 | (7/2)- 5/2- | |
180.565 18 | A | (5/2)+ | 113.08 4 180.574 20 | 10.8 11 100 10 | E1 | 67.435 0.0 | (7/2)- 5/2- | |
253.09 3 | A | (7/2+) | 98.35 15 185.70 4 253.07 4 | 15 4 77 8 100 10 | 154.594 67.435 0.0 | (9/2)- (7/2)- 5/2- | ||
260.11 19 | B | (11/2-) | 105.5 3 192.7 3 | 100 7 37 7 | 154.594 67.435 | (9/2)- (7/2)- | ||
345.73 8 | A | (9/2+) | 190.9 2 278.29 10 | 34 9 100 15 | 154.594 67.435 | (9/2)- (7/2)- | ||
387.60 22 | B | (13/2-) | 127.5 3 233.0 3 | 100 5 46 5 | 260.11 154.594 | (11/2-) (9/2)- | ||
418.99 4 | A | 238.54 15 418.99 4 | 3.3 10 100 10 | 180.565 0.0 | (5/2)+ 5/2- | |||
471.88 9 | A | 53.0 2 219.2 3 291.2 2 404.39 15 471.9 3 | 32 13 19 10 41 10 100 15 35 14 | M1 | 418.99 253.09 180.565 67.435 0.0 | (7/2+) (5/2)+ (7/2)- 5/2- | ||
495.89 17 | A | 76.8 2 496.1 3 | 9 4 100 30 | 418.99 0.0 | 5/2- | |||
529.6 3 | B | (15/2-) | 142.0 3 269.5 3 | 100 5 55 5 | 387.60 260.11 | (13/2-) (11/2-) | ||
544.59 15 | A | 72.8 2 291.3 4 364.0 3 389.9 4 | 89 43 46 23 89 45 100 50 | 471.88 253.09 180.565 154.594 | (7/2+) (5/2)+ (9/2)- | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
698.7 3 | B | (17/2-) | 169.1 3 311.1 3 | 100 6 93 10 | 529.6 387.60 | (15/2-) (13/2-) | ||
714.60 17 | A | 534.0 2 | 100 | 180.565 | (5/2)+ | |||
774.69 16 | A | 521.8 2 593.7 3 | 100 40 35 14 | 253.09 180.565 | (7/2+) (5/2)+ | |||
872.8 4 | B | (19/2-) | 174.1 3 343.2 3 | 100 7 97 11 | 698.7 529.6 | (17/2-) (15/2-) | ||
955.10 6 | A | 609.23 15 702.0 5 800.55 15 887.72 10 955.08 10 | 32 5 8 4 56 8 65 10 100 15 | 345.73 253.09 154.594 67.435 0.0 | (9/2+) (7/2+) (9/2)- (7/2)- 5/2- | |||
959.37 13 | A | 706.0 4 804.7 3 891.9 2 959.5 2 | 35 10 26 8 38 12 100 20 | 253.09 154.594 67.435 0.0 | (7/2+) (9/2)- (7/2)- 5/2- | |||
999.84 21 | A | 932.6 4 999.8 3 | 40 12 100 20 | 67.435 0.0 | (7/2)- 5/2- | |||
1034.16 13 | A | 781.0 5 853.53 15 967.0 3 | 39 15 100 20 61 18 | 253.09 180.565 67.435 | (7/2+) (5/2)+ (7/2)- | |||
1063.6 3 ? | A | 883.3 5 ? 908.8 3 ? | 48 24 100 50 | 180.565 154.594 | (5/2)+ (9/2)- | |||
1068.96 16 | A | 294.3 4 914.5 2 1001.2 3 | 17 8 58 18 100 25 | 774.69 154.594 67.435 | (9/2)- (7/2)- | |||
1085.9 4 | B | (21/2-) | 213.1 3 387.2 3 | 89 11 100 11 | 872.8 698.7 | (19/2-) (17/2-) | ||
1114.07 12 | A | 642.2 3 695.3 3 861.2 5 ? 933.6 4 | 100 40 35 14 44 22 27 13 | 471.88 418.99 253.09 180.565 | (7/2+) (5/2)+ | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1129.30 12 | A | 710.4 2 876.0 5 ? 948.6 3 1129.4 3 | 100 20 24 12 32 13 17 9 | 418.99 253.09 180.565 0.0 | (7/2+) (5/2)+ 5/2- | |||
1170.24 13 | A | 626.0 4 ? 989.9 5 ? 1102.8 3 1170.0 3 | 27 11 28 14 66 20 100 25 | 544.59 180.565 67.435 0.0 | (5/2)+ (7/2)- 5/2- | |||
1177.9 3 ? | A | 1023.3 3 ? | 100 | 154.594 | (9/2)- | |||
1287.9 4 | B | (23/2-) | 202.0 3 415.1 3 | 63 13 100 13 | 1085.9 872.8 | (21/2-) (19/2-) | ||
1346.4 3 | A | 850.1 5 ? 1165.8 3 | 75 38 100 30 | 495.89 180.565 | (5/2)+ | |||
1390.99 10 | A | 220.67 15 261.75 20 276.95 10 391.3 4 676.3 3 972.0 2 1210.4 2 | 63 10 92 14 78 12 18 9 30 12 37 11 100 20 | 1170.24 1129.30 1114.07 999.84 714.60 418.99 180.565 | (5/2)+ | |||
1432.43 18 | A | 262.3 3 303.2 3 1179.2 4 1364.8 4 | 47 19 100 30 85 34 78 31 | 1170.24 1129.30 253.09 67.435 | (7/2+) (7/2)- | |||
1546.9 8 | B | (25/2-) | 259 1 461 1 | 37 8 100 13 | 1287.9 1085.9 | (23/2-) (21/2-) | ||
1769.9 9 | B | (27/2-) | 223 1 482 1 | 66 12 100 12 | 1546.9 1287.9 | (25/2-) (23/2-) | ||
1876.0 3 | A | 1695.4 3 | 100 | 180.565 | (5/2)+ | |||
2244.4 5 | A | 1825.4 5 | 100 | 418.99 | ||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2311.3 5 ? | A | 2130.7 5 ? | 100 | 180.565 | (5/2)+ | |||
2353.2 5 | A | 2172.6 5 | 100 | 180.565 | (5/2)+ | |||
2358.7 5 | A | 2178.1 5 | 100 | 180.565 | (5/2)+ | |||
2389.3 4 | A | 2208.7 4 | 100 | 180.565 | (5/2)+ | |||
2468.8 4 | A | 2288.2 4 | 100 | 180.565 | (5/2)+ | |||
2471.6 5 | A | 2291.0 5 | 100 | 180.565 | (5/2)+ | |||
2479.1 5 | A | 2298.5 5 | 100 | 180.565 | (5/2)+ | |||
2589.4 4 | A | 2408.8 4 | 100 | 180.565 | (5/2)+ | |||
2673.6 5 ? | A | 2493.0 5 ? | 100 | 180.565 | (5/2)+ | |||
2770.6 5 | A | 2590.0 5 | 100 | 180.565 | (5/2)+ |
Jπ(level): Unless otherwise noted, these assignments are those proposed by 1993GrZP (155Nd β- decay) and are based on the apparent existence of rotational bands in this nuclide and on the multipolarities of the γ transitions. These assignments were followed by 2009Hw03 and 2018Bh07 (252Cf SF decay) in continuation of the g.s. negative parity band to higher levels
M(γ): From 155Nd β- decay dataset based on α(K)exp
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and | |||||||
0.0 | 5/2- | 41.5 s 2 % β- = 100 | |||||
154.594 24 | (9/2)- | 87.155 20 154.7 3 | 100 10 12 4 | M1(+E2) | 67.435 0.0 | (7/2)- 5/2- | |
387.60 22 | (13/2-) | 127.5 3 233.0 3 | 100 5 46 5 | 260.11 154.594 | (11/2-) (9/2)- | ||
698.7 3 | (17/2-) | 169.1 3 311.1 3 | 100 6 93 10 | 529.6 387.60 | (15/2-) (13/2-) | ||
1085.9 4 | (21/2-) | 213.1 3 387.2 3 | 89 11 100 11 | 872.8 698.7 | (19/2-) (17/2-) | ||
1546.9 8 | (25/2-) | 259 1 461 1 | 37 8 100 13 | 1287.9 1085.9 | (23/2-) (21/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and | |||||||
67.435 14 | (7/2)- | ||||||
260.11 19 | (11/2-) | 105.5 3 192.7 3 | 100 7 37 7 | 154.594 67.435 | (9/2)- (7/2)- | ||
529.6 3 | (15/2-) | 142.0 3 269.5 3 | 100 5 55 5 | 387.60 260.11 | (13/2-) (11/2-) | ||
872.8 4 | (19/2-) | 174.1 3 343.2 3 | 100 7 97 11 | 698.7 529.6 | (17/2-) (15/2-) | ||
1287.9 4 | (23/2-) | 202.0 3 415.1 3 | 63 13 100 13 | 1085.9 872.8 | (21/2-) (19/2-) | ||
1769.9 9 | (27/2-) | 223 1 482 1 | 66 12 100 12 | 1546.9 1287.9 | (25/2-) (23/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - (π5/2[413]) possible Kπ=5/2+ band. (α=10.36 keV from the | |||||||
180.565 18 | (5/2)+ | ||||||
253.09 3 | (7/2+) | 98.35 15 185.70 4 253.07 4 | 15 4 77 8 100 10 | 154.594 67.435 0.0 | (9/2)- (7/2)- 5/2- | ||
345.73 8 | (9/2+) | 190.9 2 278.29 10 | 34 9 100 15 | 154.594 67.435 | (9/2)- (7/2)- |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
67.435 | (7/2)- | 67.432 15 | M1 | 4.82 | α=4.82, α(K)=4.09 6, α(L)=0.578 8, α(M)=0.1234 18, α(N)=0.0278 4, α(O)=0.00419 6, α(P)=0.000264 4 | |
154.594 | (9/2)- | 87.155 20 | M1(+E2) | 3.0 | α=3.0 8, α(K)=1.84 11, α(L)=0.91 64, α(M)=0.21 15, α(N)=0.045 33, α(O)=0.0059 40, α(P)=1.00×10-4 26 | |
180.565 | (5/2)+ | 180.574 20 | E1 | 0.0536 | α=0.0536, α(K)=0.0456 7, α(L)=0.00629 9, α(M)=0.001336 19, α(N)=0.000298 5, α(O)=4.35×10-5 6, α(P)=2.42E-6 4 | |
471.88 | 53.0 2 | M1 | 9.69 | α=9.69 18, α(K)=8.21 15, α(L)=1.169 21, α(M)=0.250 5, α(N)=0.0563 10, α(O)=0.00847 16, α(P)=0.000532 10 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 5/2- | 41.5 s 2 % β- = 100 | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. |
67.435 | (7/2)- | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
154.594 | (9/2)- | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
180.565 | (5/2)+ | E(level): (π5/2[413]) possible Kπ=5/2+ band. (α=10.36 keV from the. | |
253.09 | (7/2+) | E(level): (π5/2[413]) possible Kπ=5/2+ band. (α=10.36 keV from the. | |
260.11 | (11/2-) | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
345.73 | (9/2+) | E(level): (π5/2[413]) possible Kπ=5/2+ band. (α=10.36 keV from the. | |
387.60 | (13/2-) | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
529.6 | (15/2-) | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
698.7 | (17/2-) | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
872.8 | (19/2-) | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
1085.9 | (21/2-) | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
1287.9 | (23/2-) | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
1546.9 | (25/2-) | E(level): π5/2[532], α=+1/2 g.s. band. (α=9.63 keV from the 5/2- and. | |
1769.9 | (27/2-) | E(level): π5/2[532], α=-1/2 g.s. band. (α=9.63 keV from the 5/2- and. |