ADOPTED LEVELS, GAMMAS for 137Cs
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 108,2173 (2007) | Cutoff date: 1-Oct-2006
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=1175.63 keV 18 | S(n)= 8278.2 keV 19 | S(p)= 7405.6 keV 4 | Q(α)= -3084 keV 5 | ||
Reference: 2012WA38 |
References: | |||
A | 137Xe β- decay | B | 136Xe(p,p),(p,p’) IAR |
C | 136Xe(3He,d) | D | 138Ba(μ-,nγ) |
E | 138Ba(d,3He) | F | 232Th(136Xe,X) |
G | 136Xe(232Th,231ACG) | H | 252Cf SF decay |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | A CDEFGH | 7/2+ | 30.08 y 9 % β- = 100 | |||||
455.491 3 | A CDE | 5/2+ | ≤ 0.1 ns | 455.490 3 | 100 | E2 | 0.0 | 7/2+ |
848.88 4 | A D | 393.35 6 848.95 6 | 22.5 15 100 5 | 455.491 0.0 | 5/2+ 7/2+ | |||
1184.69 4 | A FGH | (11/2+) | 1184.67 5 | 100 | 0.0 | 7/2+ | ||
1273.20 6 | A | 1273.23 10 | 100 | 0.0 | 7/2+ | |||
1490 12 | C | 1/2+ | ||||||
1564.11 6 | A | 715.2 2 1108.63 6 1564.0 2 | 13 3 100 9 19.5 24 | 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
1569.83 4 | A | 1114.32 6 1569.77 7 | 100 7 93 7 | 455.491 0.0 | 5/2+ 7/2+ | |||
1574.83 6 | A | 1119.33 6 1574.83 15 | 100 6 67 9 | 455.491 0.0 | 5/2+ 7/2+ | |||
1651.23 6 | A | 802.4 4 1195.75 6 1651.14 20 | 8 3 100 6 9.1 13 | 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
1671.69 11 | FGH | (15/2+) | 487.0 1 | 100 | 1184.69 | (11/2+) | ||
1783.46 5 | A | 1327.98 6 1783.43 6 | 7.1 6 100 5 | 455.491 0.0 | 5/2+ 7/2+ | |||
1867.86 4 | A C | 9/2- | 298.00 7 594.70 6 683.2 1 1867.96 8 | 100 8 71 8 17.1 18 13.7 13 | 1569.83 1273.20 1184.69 0.0 | (11/2+) 7/2+ | ||
1893.99 15 | FGH | (17/2+) | 222.3 1 | 100 | 1671.69 | (15/2+) | ||
1916.27 5 | A | 1067.4 2 1461.16 20 1916.31 8 | 51 10 17.7 23 100 13 | 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
2068.02 6 | A C | (3/2+,5/2+) | 1219.0 4 1612.52 6 2068.0 2 | 2.3 5 100 8 8.3 8 | 848.88 455.491 0.0 | 5/2+ 7/2+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2099.40 9 | A | 1250.6 4 1644.0 8 2099.42 15 | 49 7 7 4 100 9 | 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
2150 17 | C | 1/2+ | ||||||
2216.78 22 | A | 1761.3 3 2216.8 4 | 100 26 40 16 | 455.491 0.0 | 5/2+ 7/2+ | |||
2367.83 11 | A | 1518.8 5 2367.65 20 | 29 10 100 14 | 848.88 0.0 | 7/2+ | |||
2784.19 18 | FGH | (21/2+) | 890.2 1 | 100 | 1893.99 | (17/2+) | ||
2795.92 20 ? | A | 1232.1 7 1947.0 2 | 59 24 100 13 | 1564.11 848.88 | ||||
2849.10 12 | A | 2000.3 2 2393.53 15 | 21.9 23 100 8 | 848.88 455.491 | 5/2+ | |||
2850.03 4 | A | 482.14 12 633.4 5 750.65 10 933.82 6 982.25 5 1066.6 2 1280.05 15 1576.75 10 1665.30 7 2849.8 1 | 7.2 15 1.2 6 10.0 10 40 3 100 6 26 4 4.5 5 49 4 25.4 15 88 4 | 2367.83 2216.78 2099.40 1916.27 1867.86 1783.46 1569.83 1273.20 1184.69 0.0 | 9/2- (11/2+) 7/2+ | |||
2876.1 | H | (19/2+) | 982.1 | 100 | 1893.99 | (17/2+) | ||
2945.17 17 | A | 2096.4 3 2489.6 2 | 100 13 38 4 | 848.88 455.491 | 5/2+ | |||
3037.30 7 | A | 2188.44 10 2581.71 10 3037.4 2 | 35 4 100 9 19 3 | 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
3104.15 25 | A | 1236.2 4 2255.3 3 | 100 18 73 9 | 1867.86 848.88 | 9/2- | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3159.45 20 | A | 1974.9 9 3159.4 2 | 10 3 100 11 | 1184.69 0.0 | (11/2+) 7/2+ | |||
3168.1 | H | (19/2+) | 1274.1 | 100 | 1893.99 | (17/2+) | ||
3303.6 | H | (19/2-) | 1409.6 | 100 | 1893.99 | (17/2+) | ||
3377.46 13 | A | 1594.0 6 1726.3 3 2528.6 6 2921.9 2 3377.4 2 | 18 4 13.5 23 8.2 19 100 9 11.2 14 | 1783.46 1651.23 848.88 455.491 0.0 | 5/2+ 7/2+ | |||
3465.3 3 | FGH | (23/2+) | 681.1 2 | 100 | 2784.19 | (21/2+) | ||
3496.39 21 | FGH | (23/2-) | 193.1 712.2 1 | 100 | 3303.6 2784.19 | (19/2-) (21/2+) | ||
3503.4 | H | (21/2-) | 1609.4 | 100 | 1893.99 | (17/2+) | ||
3584.10 20 | A | 1933.3 4 2311.1 5 2735.2 4 3583.7 3 | 68 19 49 13 70 14 100 14 | 1651.23 1273.20 848.88 0.0 | 7/2+ | |||
3694.1 3 ? | A | 3694.0 3 | 100 | 0.0 | 7/2+ | |||
3736.7 5 ? | A | 2463.3 7 3736.9 7 | 100 39 44 13 | 1273.20 0.0 | 7/2+ | |||
3786.92 18 | A | 2003.4 3 2212.1 2 | 100 19 62 10 | 1783.46 1574.83 | ||||
3823.96 20 ? | A | 1907.7 2 2638.9 7 | 100 12 17 6 | 1916.27 1184.69 | (11/2+) | |||
3907.2 4 | A | 3451.8 8 3907.1 4 | 35 16 100 16 | 455.491 0.0 | 5/2+ 7/2+ | |||
3937.7 7 ? | A | 1720.9 6 | 100 | 2216.78 | ||||
3938.8 4 ? | A | 2287.1 4 3940.7 9 | 100 18 18 9 | 1651.23 0.0 | 7/2+ | |||
3952.40 8 ? | A | 1102.42 10 2084.47 10 | 100 9 83 6 | 2850.03 1867.86 | 9/2- | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3955.7 6 ? | A | 2304.5 8 3955.5 8 | 100 44 61 22 | 1651.23 0.0 | 7/2+ | |||
3976.5 8 ? | A | 3976.4 8 | 100 | 0.0 | 7/2+ | |||
4117.6 | H | (19/2+) | 2223.6 | 100 | 1893.99 | (17/2+) | ||
4291.0 | H | (21/2+) | 2397.0 | 100 | 1893.99 | (17/2+) | ||
4351.6 4 | FGH | (23/2+) | 1567.4 3 | 100 | 2784.19 | (21/2+) | ||
4408.30 23 | FGH | (27/2-) | 911.9 1 | 100 | 3496.39 | (23/2-) | ||
4776.6 4 | FGH | (25/2+) | 425.0 2 | 100 | 4351.6 | (23/2+) | ||
5023.0 3 | FGH | (29/2-) | 614.7 2 | 100 | 4408.30 | (27/2-) | ||
5494.2 5 | FGH | (31/2-) | 471.2 3 | 100 | 5023.0 | (29/2-) | ||
10195 20 | B | (7/2-) | ||||||
10794 20 | B | (3/2-) | ||||||
11173 20 | B | (1/2-) | ||||||
11421 20 | B | (9/2-) | ||||||
11498 20 | B | (5/2-) | ||||||
11724 20 | B | (7/2-) | ||||||
11940 20 | B | (5/2-) | ||||||
12050 20 | B | (3/2-) | ||||||
12140 20 | B | (1/2-) | ||||||
12209 20 | B | (5/2-) | ||||||
12399 20 | B | (1/2-) | ||||||
12479 20 | B | (5/2-) | ||||||
12698 20 | B | (3/2-) | ||||||
12788 20 | B | (1/2-) |
E(level): From least-squares fit to Eγ
Jπ(level): From correspondence with calculated spectrum based on shell model (1999Br17), unless given otherwise.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - πg7/25 multiplet | |||||||
0.0 | 7/2+ | 30.08 y 9 % β- = 100 | |||||
1184.69 4 | (11/2+) | 1184.67 5 | 100 | 0.0 | 7/2+ | ||
1671.69 11 | (15/2+) | 487.0 1 | 100 | 1184.69 | (11/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - πg7/24d5/2 multiplet | |||||||
1893.99 15 | (17/2+) | ||||||
2784.19 18 | (21/2+) | 890.2 1 | 100 | 1893.99 | (17/2+) | ||
2876.1 | (19/2+) | 982.1 | 100 | 1893.99 | (17/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - πg7/24h11/2 multiplet | |||||||
3303.6 | (19/2-) | ||||||
3496.39 21 | (23/2-) | 193.1 712.2 1 | 100 | 3303.6 2784.19 | (19/2-) (21/2+) | ||
3503.4 | (21/2-) | 1609.4 | 100 | 1893.99 | (17/2+) | ||
4408.30 23 | (27/2-) | 911.9 1 | 100 | 3496.39 | (23/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 4 - πg7/23d5/2h11/2 multiplet | |||||||
5023.0 3 | (29/2-) | ||||||
5494.2 5 | (31/2-) | 471.2 3 | 100 | 5023.0 | (29/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 5 - πg7/23d5/22 multiplet | |||||||
3168.1 | (19/2+) | ||||||
3465.3 3 | (23/2+) | 681.1 2 | 100 | 2784.19 | (21/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 6 - πg7/25νf7/2h11/2 multiplet | |||||||
4117.6 | (19/2+) | ||||||
4291.0 | (21/2+) | 2397.0 | 100 | 1893.99 | (17/2+) | ||
4351.6 4 | (23/2+) | 1567.4 3 | 100 | 2784.19 | (21/2+) | ||
4776.6 4 | (25/2+) | 425.0 2 | 100 | 4351.6 | (23/2+) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
455.491 | 5/2+ | ≤ 0.1 ns | 455.490 3 | E2 | 0.0122 | B(E2)(W.u.)>6.8, α=0.0122, α(K)=0.0103 3, α(L)=0.00156 5, α(M)=0.00032 1 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 7/2+ | 30.08 y 9 % β- = 100 | Q=+0.051 1 (1989Ra17), μ=+2.8413 1 (1989Ra17) Other evaluated results: 30.09 y 11 (2004Wo02); 30.08 y 3 (1996ChZY, 1994Ka08); 30.11 y 3 (1992Ra08); and 30.18 y 15 (1991BaZS). E(level): Other evaluated results: 30.09 y 11 (2004Wo02); 30.08 y 3 (1996ChZY, 1994Ka08); 30.11 y 3 (1992Ra08); and 30.18 y 15 (1991BaZS). πg7/25 multiplet. |
1184.69 | (11/2+) | E(level): πg7/25 multiplet. | |
1671.69 | (15/2+) | E(level): πg7/25 multiplet. | |
1893.99 | (17/2+) | E(level): πg7/24d5/2 multiplet. | |
2784.19 | (21/2+) | E(level): πg7/24d5/2 multiplet. | |
2876.1 | (19/2+) | E(level): πg7/24d5/2 multiplet. | |
3168.1 | (19/2+) | E(level): πg7/23d5/22 multiplet. | |
3303.6 | (19/2-) | E(level): πg7/24h11/2 multiplet. | |
3465.3 | (23/2+) | E(level): πg7/23d5/22 multiplet. | |
3496.39 | (23/2-) | E(level): πg7/24h11/2 multiplet. | |
3503.4 | (21/2-) | E(level): πg7/24h11/2 multiplet. | |
4117.6 | (19/2+) | E(level): πg7/25νf7/2h11/2 multiplet. | |
4291.0 | (21/2+) | E(level): πg7/25νf7/2h11/2 multiplet. | |
4351.6 | (23/2+) | E(level): πg7/25νf7/2h11/2 multiplet. | |
4408.30 | (27/2-) | E(level): πg7/24h11/2 multiplet. | |
4776.6 | (25/2+) | E(level): πg7/25νf7/2h11/2 multiplet. | |
5023.0 | (29/2-) | E(level): πg7/23d5/2h11/2 multiplet. | |
5494.2 | (31/2-) | E(level): πg7/23d5/2h11/2 multiplet. | |
10195 | (7/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
10794 | (3/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
11173 | (1/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
11421 | (9/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
11498 | (5/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
11940 | (5/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12050 | (3/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
E(level) | Jπ(level) | T1/2(level) | Comments |
12140 | (1/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12209 | (5/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12399 | (1/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12479 | (5/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12698 | (3/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). | |
12788 | (1/2-) | Jπ(level): From analysis of isobaric analog resonances in (p,p). |
E(level) | E(gamma) | Comments |
1184.69 | 1184.67 | E(γ): weighted average of 1977We02 (1184.70 6) and 1999Br17 (1184.6 1) values |
Theory: 2000Yo08, 1998Su03, 1993Ch31
Isotope Shifts: 2000Ga58, high-resolution resonant laser spectroscopy
γ-ray source properties: 2000He14
References where 137Cs is used as the standard source, such as, for various calibrations, etc., and not in study of 137Cs structure, have not been included.
Gammas: γ ray data are from either 1977We02 or 1999Br17, unless noted otherwise.
Q-value: Note: Current evaluation has used the following Q record 1175.63 17 8278.2 19 7409 7 -3084 5 2003Au03