ADOPTED LEVELS, GAMMAS for 142Xe
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-)=5288 keV 8 | S(n)= 5104 keV 4 | S(p)= 1.261×104 keV SY | Q(α)= -1958 keV 6 | ||
Reference: 2012WA38 |
References: | |||
A | 248Cm SF decay | B | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | AB | 0+ | 1.23 s 2 % β- = 100 % β-n = 0.21 6 | |||||
287.20 20 | AB | 2+ | 0.20 ns 3 | 287.2 2 | 100 | 0.0 | 0+ | |
690.7 3 | A | (4+) | 403.5 2 | 100 | 287.20 | 2+ | ||
1181.1 4 | A | (6+) | 490.4 2 | 100 | 690.7 | (4+) | ||
1258.5 11 | A | (3-) | 971.3 | 100 | 287.20 | 2+ | ||
1516.3 11 | A | (5-) | 825.6 | 100 | 690.7 | (4+) | ||
1622.4 5 | A | 441.1 931.7 5 | | 1181.1 690.7 | (6+) (4+) | |||
1732.2 4 | A | (8+) | 551.1 2 | 100 | 1181.1 | (6+) | ||
1864.5 8 | A | 683.4 | 100 | 1181.1 | (6+) | |||
1888.3 9 | A | (7-) | 372? 707.2 | | D | 1516.3 1181.1 | (5-) (6+) | |
1981.2 6 | A | 116.7 358.9 800.1 5 | 28 3 38 3 100 5 | 1864.5 1622.4 1181.1 | (6+) | |||
2211.7 7 | A | 230.4 347.2 479.5 | | 1981.2 1864.5 1732.2 | (8+) | |||
2342.6 5 | A | (10+) | 610.4 2 | 100 | 1732.2 | (8+) | ||
2351.2 7 | A | (9-) | 462.9 618.9 | 19 2 100 1 | E1 | 1888.3 1732.2 | (7-) (8+) | |
2605.3 6 | A | 254.0 393.4 873.1 5 | 22 6 32 6 100 8 | 2351.2 2211.7 1732.2 | (9-) (8+) | |||
2805.9 9 | A | 200.6 454.8 | | 2605.3 2351.2 | (9-) | |||
2891.7 9 | A | (11-) | 540.5 549.1 | | (E2) | 2351.2 2342.6 | (9-) (10+) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3014.3 7 | A | (12+) | 671.7 5 | 100 | 2342.6 | (10+) | ||
3210.4 14 | A | 404.5 | 100 | 2805.9 | ||||
3496.2 14 | A | (13-) | 481.6? 604.5 | | 3014.3 2891.7 | (12+) (11-) | ||
3739.7 12 | A | (14+) | 725.4 | 100 | 3014.3 | (12+) | ||
3764.3 17 | A | 553.9 | | 3210.4 | ||||
4511.2 16 | A | (16+) | 771.5 | | 3739.7 | (14+) |
E(level): From least-squares fit to Eγ.
Jπ(level): From γγ angular correlations (consistent with stretched E2), linear polarization and systematics of collective bands in neighboring even-even nuclei, except where noted.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - GS band | |||||||
0.0 | 0+ | 1.23 s 2 % β- = 100 % β-n = 0.21 6 | |||||
287.20 20 | 2+ | 0.20 ns 3 | 287.2 2 | 100 | 0.0 | 0+ | |
690.7 3 | (4+) | 403.5 2 | 100 | 287.20 | 2+ | ||
1181.1 4 | (6+) | 490.4 2 | 100 | 690.7 | (4+) | ||
1732.2 4 | (8+) | 551.1 2 | 100 | 1181.1 | (6+) | ||
2342.6 5 | (10+) | 610.4 2 | 100 | 1732.2 | (8+) | ||
3014.3 7 | (12+) | 671.7 5 | 100 | 2342.6 | (10+) | ||
3739.7 12 | (14+) | 725.4 | 100 | 3014.3 | (12+) | ||
4511.2 16 | (16+) | 771.5 | | 3739.7 | (14+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - octupole band | |||||||
1258.5 11 | (3-) | ||||||
1516.3 11 | (5-) | 825.6 | 100 | 690.7 | (4+) | ||
1888.3 9 | (7-) | 372? 707.2 | | D | 1516.3 1181.1 | (5-) (6+) | |
2351.2 7 | (9-) | 462.9 618.9 | 19 2 100 1 | E1 | 1888.3 1732.2 | (7-) (8+) | |
2891.7 9 | (11-) | 540.5 549.1 | | (E2) | 2351.2 2342.6 | (9-) (10+) | |
3496.2 14 | (13-) | 481.6? 604.5 | | 3014.3 2891.7 | (12+) (11-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - possible ROTATIONAL band | |||||||
2805.9 9 | |||||||
3210.4 14 | 404.5 | 100 | 2805.9 | ||||
3764.3 17 | 553.9 | | 3210.4 |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
2351.2 | (9-) | 618.9 | E1 | 0.00182 | α=0.00182 3, α(K)=0.001577 22, α(L)=0.000194 3, α(M)=3.90×10-5 6, α(N)=8.06E-6 12, α(O)=1.004E-6 14, α(N+)=9.06E-6 13 | |
2891.7 | (11-) | 540.5 | (E2) | 0.00725 | α=0.00725 11, α(K)=0.00615 9, α(L)=0.000876 13, α(M)=0.000179 3, α(N)=3.67×10-5 6, α(O)=4.42E-6 7, α(N+)=4.11E-5 6 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 1.23 s 2 % β- = 100 % β-n = 0.21 6 | For predictions on the features of delayed-neutron emission see 1982Ru01. E(level): GS band. |
287.20 | 2+ | 0.20 ns 3 | μ=+0.84 26 (2009Go09) E(level): GS band. |
690.7 | (4+) | E(level): GS band. | |
1181.1 | (6+) | E(level): GS band. | |
1258.5 | (3-) | E(level): octupole band. | |
1516.3 | (5-) | E(level): octupole band. | |
1732.2 | (8+) | E(level): GS band. | |
1888.3 | (7-) | E(level): octupole band. | |
2342.6 | (10+) | E(level): GS band. | |
2351.2 | (9-) | E(level): octupole band. | |
2805.9 | E(level): possible ROTATIONAL band. | ||
2891.7 | (11-) | E(level): octupole band. | |
3014.3 | (12+) | E(level): GS band. | |
3210.4 | E(level): possible ROTATIONAL band. | ||
3496.2 | (13-) | E(level): octupole band. | |
3739.7 | (14+) | E(level): GS band. | |
3764.3 | E(level): possible ROTATIONAL band. | ||
4511.2 | (16+) | E(level): GS band. |
Some recent theory, calculations: 2007Ji05, 2006Mo34, 1998Zh37, 1995Ba45, 1994Ma02, 1993Sh13, 1992Na07
Gammas: All data are from 248Cm SF decay
Q-value: Note: Current evaluation has used the following Q record 5296 115104 4 1.222e+413-1900 120 2011AuZZ
Q-value: Q(β-n)=1179 11, Q(εp)=-2.12×104 4 2011AuZZ
Q-value: Values in 2003Au03: Q(β-)=5040 10, S(n)=5220 14, S(p)=12250 22 (syst.), Q(α)=-1970 23 (syst.), Q(β-n)=930 10, Q(εp)=-2.12×104 4