ADOPTED LEVELS, GAMMAS for 142Cs
Authors: T.D. Johnson, D. Symochko, M. Fadil, and J.K. Tuli | Citation: Nucl. Data Sheets 112, 1949 (2011) | Cutoff date: 1-Jun-2010
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=7325 keV 9 | S(n)= 4112 keV 12 | S(p)= 9610 keV 8 | Q(α)= -963 keV 10 | ||
Reference: 2012WA38 |
References: | |||
A | 142Xe 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 | A | 0- | 1.684 s 14 % β- = 100 % β-n = 0.090 4 | |||||
12.929 20 | A | 12.9S | | 0.0 | 0- | |||
39.436 20 | A | 38.83 30 | 100 | 0.0 | 0- | |||
70.58 15 | A | 57.50S 70.1 4 | | 12.929 0.0 | 0- | |||
85.41 6 | A | 46.13 20 72.86 20 | 18 3 100 6 | 39.436 12.929 | ||||
204.000 19 | A | 164.563 7 191.069 7 204.034 20 | 61 4 100 6 77 4 | 39.436 12.929 0.0 | 0- | |||
210.113 21 | A | 124.52 25 170.677 7 197.44 14 | 100 21 17 5 79 9 | 85.41 39.436 12.929 | ||||
242.89 6 | A | 33.0S 38.83 40 157.485 7 203.79 20 242.8 6 | 36 3 27 2 100 4 4.1 20 | 210.113 204.000 85.41 39.436 0.0 | 0- | |||
250.70 7 | A | 211.7 4 250.68 9 | 12 3 100 7 | 39.436 0.0 | 0- | |||
304.42 6 | A | 94.6 3 100.8 6 219.1 3 264.3 6 291.95 30 304.3 4 | 8.6 51 2.1 7 31 6 9 2 100 6 10 3 | 210.113 204.000 85.41 39.436 12.929 0.0 | 0- | |||
419.34 8 | A | 379.90 8 418.5 4 | 100 6 35 6 | 39.436 0.0 | 0- | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
598.14 9 | A | 394.20 10 | 100 | 204.000 | ||||
600.07 16 | A | 349.0 3 | 100 | 250.70 | ||||
657.17 3 | A | 57.50S 352.74 6 406.47 10 414.52 20 447.048 21 453.15 25 571.83 20 587.1 4 618.06 16 644.80 30 657.05 6 | 13 1 11 1 47 3 17 1 20 1 100 5 3 1 72 4 63 4 79 4 | 600.07 304.42 250.70 242.89 210.113 204.000 85.41 70.58 39.436 12.929 0.0 | 0- | |||
718.86 9 | A | 468.17 7 718.2 4 | 100 6 3.4 12 | 250.70 0.0 | 0- | |||
732.63 7 | A | 312.99 23 428.20 4 661.9 5 693.60 20 | 56 9 100 13 56 15 95 7 | 419.34 304.42 70.58 39.436 | ||||
757.42 9 | A | 100.8 6 547.69 21 672.20 19 718.2 4 744.36 24 | 5.0 16 91 15 100 10 10 3 42 5 | 657.17 210.113 85.41 39.436 12.929 | ||||
777.01 11 | A | 19.77 13 119.9 4 737.37 17 776.05 50 | 25 7 20 3 100 13 22 3 | 757.42 657.17 39.436 0.0 | 0- | |||
886.65 14 | A | 582.49 24 801.24 19 815.88 21 | 71 10 100 11 58 10 | 304.42 85.41 70.58 | ||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
944.33 4 | A | 167.4 6 287.160 19 943.8 5 | 10 4 100 5 19 6 | 777.01 657.17 0.0 | 0- | |||
1066.96 16 | A | 862.90 21 996.41 21 | 75 11 100 14 | 204.000 70.58 | ||||
1068.26 16 | A | 468.17 7 983.5 5 1068.3 3 | 100 6 74 18 79 15 | 600.07 85.41 0.0 | 0- | |||
1089.94 11 | A | 432.36 20 1089.7 5 | 100 10 11 3 | 657.17 0.0 | 0- | |||
1195.49 7 | A | 105.61 24 438.19 17 538.24 7 891.40 20 991.23 30 1183.5 8 1195.4 3 | 2.6 4 8 1 100 5 15 1 11 1 3.5 7 6 1 | 1089.94 757.42 657.17 304.42 204.000 12.929 0.0 | 0- | |||
1312.38 5 | A | 1108.3 6 1227.01 7 1300.09 30 1312.29 6 | 2.3 1 62 4 100 5 70 4 | 204.000 85.41 12.929 0.0 | 0- | |||
1614.53 8 | A | 524.44 11 957.27 21 1410.60 10 1602.2 3 | 100 8 88 13 78 6 25 5 | 1089.94 657.17 204.000 12.929 | ||||
1875.76 12 | A | 807.4 3 1156.80 14 1219.23 32 1456.5 6 1624.8 7 1632.9 4 1789.5 8 1804.6 5 1837.1 5 1875.8 5 | 86 14 100 8 94 14 18 6 12 5 21 6 17 6 18 6 29 8 26 8 | 1068.26 718.86 657.17 419.34 250.70 242.89 85.41 70.58 39.436 0.0 | 0- | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1961.32 14 | A | 765.66 21 1304.0 3 1363.3 3 1710.9 3 1718.9 8 | 100 12 71 12 53 12 62 12 26 12 | 1195.49 657.17 598.14 250.70 242.89 | ||||
1984.61 24 | A | 917.6 3 1040.4 5 1384.5 4 1972.1 15 | 100 20 53 13 57 10 20 17 | 1066.96 944.33 600.07 12.929 | ||||
2095.5 6 ? | A | 1338.3 3 ? 1376.6 3 ? 1844.5 3 ? | 100 21 76 10 69 14 | 757.42 718.86 250.70 | ||||
2281.79 25 ? | A | 1395.0 3 ? 1862.2 6 ? 2077.7 5 ? | 100 18 88 29 100 29 | 886.65 419.34 204.000 | ||||
2500.04 13 | A | 404.5 5 1187.39 18 1431.7 6 1781.7 4 1902.05 18 | 26 7 76 8 16 5 22 8 100 9 | 2095.5 1312.38 1068.26 718.86 598.14 | ||||
0+X | B | J(-) | ||||||
25.51+X 24 | J+1(-) | 25.3 | 100 31 | 0+X | J(-) | |||
96.69+X 24 | B | J+2(-) | 71.1 96.9 | 38 11 100 6 | E2 | 25.51+X 0+X | J+1(-) J(-) | |
122.9+X 3 | B | J+3(-) | 11 ns 3 | 26.4 97.3 | 100 16 69 4 | (E2) | 96.69+X 25.51+X | J+2(-) J+1(-) |
315.0+X 4 | B | J+4(-) | 192.1 218.3 | 23 4 100 13 | E2 | 122.9+X 96.69+X | J+3(-) J+2(-) | |
328.5+X 4 | B | J+5(-) | 205.6 | 100 5 | (E2) | 122.9+X | J+3(-) | |
723.6+X 4 | B | J+6(-) | 395.1 408.6 | 23 5 100 7 | E2 | 328.5+X 315.0+X | J+5(-) J+4(-) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
733.3+X 4 | B | J+7(-) | 404.8 | 100 6 | E2 | 328.5+X | J+5(-) | |
1073.1+X | B | J+5(+) | 744.4 757.9 | | 328.5+X 315.0+X | J+5(-) J+4(-) | ||
1150.2+X | B | J+6(+) | 821.5 | | 328.5+X | J+5(-) | ||
1272.4+X 5 | B | J+8(-) | 539.1 548.8 | 100 6 | E2 | 733.3+X 723.6+X | J+7(-) J+6(-) | |
1278.2+X 5 | B | J+9(-) | 544.9 | 100 12 | E2 | 733.3+X | J+7(-) | |
1342.4+X 5 | B | J+7(+) | 609.1 618.8 | 33 8 100 8 | E1 | 733.3+X 723.6+X | J+7(-) J+6(-) | |
1449.1+X 5 | B | J+8(+) | 715.8 | 100 9 | E1 | 733.3+X | J+7(-) | |
1652.8+X 5 | B | 919.5 | 100 50 | 733.3+X | J+7(-) | |||
1730.0+X 5 | B | J+9(+) | 387.6 451.8 457.6 | 100 14 | 1342.4+X 1278.2+X 1272.4+X | J+7(+) J+9(-) J+8(-) | ||
1793.7+X 5 | B | 1060.4 | 100 50 | 733.3+X | J+7(-) | |||
1862.6+X 5 | B | J+10(+) | 413.5 584.4 | 100 14 43 14 | 1449.1+X 1278.2+X | J+8(+) J+9(-) | ||
1974.5+X 5 | B | J+10(-) | 702.1 | 100 25 | 1272.4+X | J+8(-) | ||
1978.2+X 5 | B | J+11(-) | 700.0 | 100 10 | 1278.2+X | J+9(-) | ||
1995.4+X 5 | B | 717.2 1262.1 | 100 25 | 1278.2+X 733.3+X | J+9(-) J+7(-) | |||
2233.2+X 5 | B | J+11(+) | 255.0 258.7 503.2 | 100 20 | 1978.2+X 1974.5+X 1730.0+X | J+11(-) J+10(-) J+9(+) | ||
2322.6+X 5 | B | 327.2 344.4? | 100 20 | 1995.4+X 1978.2+X | J+11(-) | |||
2399.9+X 5 | B | J+12(+) | 421.7 537.3 | 18 8 100 25 | 1978.2+X 1862.6+X | J+11(-) J+10(+) | ||
2731.1+X | B | J+12(-) | 756.4 | | 1974.5+X | J+10(-) | ||
2765.4+X 6 | B | J+13(-) | 787.2 | 100 33 | 1978.2+X | J+11(-) | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2785.1+X 5 | B | 462.5 806.9 | 100 33 67 22 | 2322.6+X 1978.2+X | J+11(-) | |||
2849.0+X 6 | B | J+13(+) | 615.8 | 100 50 | 2233.2+X | J+11(+) | ||
3078.4+X 6 | B | J+14(+) | 678.5 | 100 50 | 2399.9+X | J+12(+) | ||
3363.3+X 6 | B | 578.2 | 100 50 | 2785.1+X | ||||
3554.3+X | B | J+15(+) | 705.1 | | 2849.0+X | J+13(+) | ||
3661.8+X | B | J+15(-) | 896.2 | | 2765.4+X | J+13(-) | ||
3862.3+X | B | J+16(+) | 783.7 | | 3078.4+X | J+14(+) | ||
4001.3+X | B | 637.8 | | 3363.3+X |
E(level): From least-squares fit to Eγ. Unknown uncertainties assumed to be 1.0 kev for the data from β- decay and 0.3 kev for the data from 252Cf SF decay.
Jπ(level): From band assignments, unless otherwise noted.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Band based on 96+x | |||||||
96.69+X 24 | J+2(-) | ||||||
315.0+X 4 | J+4(-) | 192.1 218.3 | 23 4 100 13 | E2 | 122.9+X 96.69+X | J+3(-) J+2(-) | |
723.6+X 4 | J+6(-) | 395.1 408.6 | 23 5 100 7 | E2 | 328.5+X 315.0+X | J+5(-) J+4(-) | |
1272.4+X 5 | J+8(-) | 539.1 548.8 | 100 6 | E2 | 733.3+X 723.6+X | J+7(-) J+6(-) | |
1974.5+X 5 | J+10(-) | 702.1 | 100 25 | 1272.4+X | J+8(-) | ||
2731.1+X | J+12(-) | 756.4 | | 1974.5+X | J+10(-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Band based on 11Ns isomer | |||||||
122.9+X 3 | J+3(-) | 11 ns 3 | |||||
328.5+X 4 | J+5(-) | 205.6 | 100 5 | (E2) | 122.9+X | J+3(-) | |
733.3+X 4 | J+7(-) | 404.8 | 100 6 | E2 | 328.5+X | J+5(-) | |
1278.2+X 5 | J+9(-) | 544.9 | 100 12 | E2 | 733.3+X | J+7(-) | |
1978.2+X 5 | J+11(-) | 700.0 | 100 10 | 1278.2+X | J+9(-) | ||
2765.4+X 6 | J+13(-) | 787.2 | 100 33 | 1978.2+X | J+11(-) | ||
3661.8+X | J+15(-) | 896.2 | | 2765.4+X | J+13(-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - Band based on 1150+x | |||||||
1150.2+X | J+6(+) | ||||||
1449.1+X 5 | J+8(+) | 715.8 | 100 9 | E1 | 733.3+X | J+7(-) | |
1862.6+X 5 | J+10(+) | 413.5 584.4 | 100 14 43 14 | 1449.1+X 1278.2+X | J+8(+) J+9(-) | ||
2399.9+X 5 | J+12(+) | 421.7 537.3 | 18 8 100 25 | 1978.2+X 1862.6+X | J+11(-) J+10(+) | ||
3078.4+X 6 | J+14(+) | 678.5 | 100 50 | 2399.9+X | J+12(+) | ||
3862.3+X | J+16(+) | 783.7 | | 3078.4+X | J+14(+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 4 - Band based on 1793+x | |||||||
1793.7+X 5 | |||||||
1995.4+X 5 | 717.2 1262.1 | 100 25 | 1278.2+X 733.3+X | J+9(-) J+7(-) | |||
2322.6+X 5 | 327.2 344.4? | 100 20 | 1995.4+X 1978.2+X | J+11(-) | |||
2785.1+X 5 | 462.5 806.9 | 100 33 67 22 | 2322.6+X 1978.2+X | J+11(-) | |||
3363.3+X 6 | 578.2 | 100 50 | 2785.1+X | ||||
4001.3+X | 637.8 | | 3363.3+X | ||||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 5 - Band based on 1073+x | |||||||
1073.1+X | J+5(+) | ||||||
1342.4+X 5 | J+7(+) | 609.1 618.8 | 33 8 100 8 | E1 | 733.3+X 723.6+X | J+7(-) J+6(-) | |
1730.0+X 5 | J+9(+) | 387.6 451.8 457.6 | 100 14 | 1342.4+X 1278.2+X 1272.4+X | J+7(+) J+9(-) J+8(-) | ||
2233.2+X 5 | J+11(+) | 255.0 258.7 503.2 | 100 20 | 1978.2+X 1974.5+X 1730.0+X | J+11(-) J+10(-) J+9(+) | ||
2849.0+X 6 | J+13(+) | 615.8 | 100 50 | 2233.2+X | J+11(+) | ||
3554.3+X | J+15(+) | 705.1 | | 2849.0+X | J+13(+) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
96.69+X | J+2(-) | 96.9 | E2 | 2.09 | α=2.09, α(K)=1.332 19, α(L)=0.597 9, α(M)=0.1293 18, α(N)=0.0262 4, α(O)=0.00308 5, α(P)=3.67×10-5 6, α(N+)=0.0293 5 | |
122.9+X | J+3(-) | 11 ns 3 | 97.3 | (E2) | 2.06 | α=2.06, α(K)=1.315 19, α(L)=0.586 9, α(M)=0.1269 18, α(N)=0.0257 4, α(O)=0.00302 5, α(P)=3.63×10-5 5, α(N+)=0.0288 4 |
315.0+X | J+4(-) | 218.3 | E2 | 0.1237 | α=0.1237, α(K)=0.0981 14, α(L)=0.0204 3, α(M)=0.00429 6, α(N)=0.000884 13, α(O)=0.0001117 16, α(P)=3.17×10-6 5, α(N+)=0.000999 14 | |
328.5+X | J+5(-) | 205.6 | (E2) | 0.1515 | α=0.1515, α(K)=0.1192 17, α(L)=0.0257 4, α(M)=0.00542 8, α(N)=0.001116 16, α(O)=0.0001402 20, α(P)=3.81×10-6 6, α(N+)=0.001260 18 | |
723.6+X | J+6(-) | 408.6 | E2 | 0.01678 | α=0.01678, α(K)=0.01402 20, α(L)=0.00220 3, α(M)=0.000456 7, α(N)=9.50×10-5 14, α(O)=1.262E-5 18, α(P)=4.95E-7 7, α(N+)=0.0001082 16 | |
733.3+X | J+7(-) | 404.8 | E2 | 0.01725 | α=0.01725, α(K)=0.01441 21, α(L)=0.00227 4, α(M)=0.000470 7, α(N)=9.80×10-5 14, α(O)=1.300E-5 19, α(P)=5.08E-7 8, α(N+)=0.0001115 16 | |
1272.4+X | J+8(-) | 548.8 | E2 | 0.00730 | α=0.00730 11, α(K)=0.00618 9, α(L)=0.000892 13, α(M)=0.000184 3, α(N)=3.85×10-5 6, α(O)=5.20E-6 8, α(P)=2.24E-7 4, α(N+)=4.39E-5 7 | |
1278.2+X | J+9(-) | 544.9 | E2 | 0.00744 | α=0.00744 11, α(K)=0.00630 9, α(L)=0.000910 13, α(M)=0.000188 3, α(N)=3.93×10-5 6, α(O)=5.31E-6 8, α(P)=2.28E-7 4, α(N+)=4.48E-5 7 | |
1342.4+X | J+7(+) | 618.8 | E1 | 0.00192 | α=0.00192 3, α(K)=0.001660 24, α(L)=0.000205 3, α(M)=4.17×10-5 6, α(N)=8.80E-6 13, α(O)=1.221E-6 18, α(P)=5.99E-8 9, α(N+)=1.008E-5 15 | |
1449.1+X | J+8(+) | 715.8 | E1 | 0.001404 | α=0.001404 20, α(K)=0.001217 17, α(L)=0.0001498 21, α(M)=3.04×10-5 5, α(N)=6.42E-6 9, α(O)=8.92E-7 13, α(P)=4.41E-8 7, α(N+)=7.35E-6 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0- | 1.684 s 14 % β- = 100 % β-n = 0.090 4 | %β-n: 0.091 3 weighted average of 0.082% 8 (1981En05), 0.097% 7 (1980Lu04), 0.096% 8 (1977Re05). Others: 0.285% 26 (1975As05), 0.27% 7 (1969Ta04). Average E(n)=240 keV 6 (or 130 keV 10) (1977Re06), E(n) spectra (1977Sh01). |
96.69+X | J+2(-) | E(level): Band based on 96+x. | |
122.9+X | J+3(-) | 11 ns 3 | E(level): Band based on 11Ns isomer. |
315.0+X | J+4(-) | E(level): Band based on 96+x. | |
328.5+X | J+5(-) | E(level): Band based on 11Ns isomer. | |
723.6+X | J+6(-) | E(level): Band based on 96+x. | |
733.3+X | J+7(-) | E(level): Band based on 11Ns isomer. | |
1073.1+X | J+5(+) | E(level): Band based on 1073+x. | |
1150.2+X | J+6(+) | E(level): Band based on 1150+x. | |
1272.4+X | J+8(-) | E(level): Band based on 96+x. | |
1278.2+X | J+9(-) | E(level): Band based on 11Ns isomer. | |
1342.4+X | J+7(+) | E(level): Band based on 1073+x. | |
1449.1+X | J+8(+) | E(level): Band based on 1150+x. | |
1730.0+X | J+9(+) | E(level): Band based on 1073+x. | |
1793.7+X | E(level): Band based on 1793+x. | ||
1862.6+X | J+10(+) | E(level): Band based on 1150+x. | |
1974.5+X | J+10(-) | E(level): Band based on 96+x. | |
1978.2+X | J+11(-) | E(level): Band based on 11Ns isomer. | |
1995.4+X | E(level): Band based on 1793+x. | ||
2233.2+X | J+11(+) | E(level): Band based on 1073+x. | |
2322.6+X | E(level): Band based on 1793+x. | ||
2399.9+X | J+12(+) | E(level): Band based on 1150+x. | |
2731.1+X | J+12(-) | E(level): Band based on 96+x. | |
2765.4+X | J+13(-) | E(level): Band based on 11Ns isomer. | |
2785.1+X | E(level): Band based on 1793+x. | ||
E(level) | Jπ(level) | T1/2(level) | Comments |
2849.0+X | J+13(+) | E(level): Band based on 1073+x. | |
3078.4+X | J+14(+) | E(level): Band based on 1150+x. | |
3363.3+X | E(level): Band based on 1793+x. | ||
3554.3+X | J+15(+) | E(level): Band based on 1073+x. | |
3661.8+X | J+15(-) | E(level): Band based on 11Ns isomer. | |
3862.3+X | J+16(+) | E(level): Band based on 1150+x. | |
4001.3+X | E(level): Band based on 1793+x. |
Data from β- decay and 252Cf SF decay do not overlap. Most likely the lowest level found in SF decay is an isomer with unknown excitation energy (marked as 0+X) and spin (given as J).
Q-value: Note: Current evaluation has used the following Q record 7320 114116 149617 11-1.04e+3syst 2011AuZZ
Q-value: Uncertainty associated with Q(α) is ΔQ(α)=10
Q-value: Q(β-n)=1136 12, Q(εp)=-17510 13 2011AuZZ
Q-value: Values in 2003Au03: Q(β-)=7308 11, S(n)=4110 15, S(p)=9480 9, Q(α)=-610 8, Q(β-n)=1139 13 Q(εp)=-17280 20