ADOPTED LEVELS, GAMMAS for 140Xe
Author: N. Nica | Citation: Nucl. Data Sheets 154, 1 (2018) | Cutoff date: 20-Nov-2018
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=4064 keV 9 | S(n)= 5413 keV 3 | S(p)= 11804 keV 5 | Q(α)= -986 keV 3 | ||
Reference: 2017WA10 |
References: | |||
A | 140I β- decay | B | 248Cm SF decay |
C | 252Cf SF decay | D | 235U(n,Fγ) E=THERMAL |
E | 235U(n,Fγ),238U(n,Fγ) E=3 MeV | F | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABCDEF | 0+ | 13.60 s 10 % β- = 100 | |||||
376.658 15 | ABCDEF | 2+ | 70.5 ps 20 | 376.657 15 | 100 | E2 | 0.0 | 0+ |
834.295 24 | ABCDEF | 4+ | 14.2 ps 23 | 457.630 19 | 100 | E2 | 376.658 | 2+ |
1304.41 6 | BC | 3+ | 470.10 9 927.90 9 | 70 1 100 3 | M1+E2 M1+E2 | 834.295 376.658 | 4+ 2+ | |
1416.67 5 | ABCD | 6+ | < 8.6 ps | 582.44 5 | 100 | E2 | 834.295 | 4+ |
1443.0 3 | B | 1066.3 3 | 100 | 376.658 | 2+ | |||
1512.86 20 | ABC | 3- | < 7.7 ps | 678.6 1136.7 | 39 5 100 11 | (E1) (E1) | 834.295 376.658 | 4+ 2+ |
1572.94 5 | BCD | 5+ | 156.3 1 268.60 6 738.64 5 | 4.0 3 11.3 6 100 2 | M1+E2 E2 M1+E2 | 1416.67 1304.41 834.295 | 6+ 3+ 4+ | |
1725.70 5 | BC | 6+ | 309.10 5 891.20 7 | 70 2 100 2 | M1+E2 E2 | 1416.67 834.295 | 6+ 4+ | |
1771.33 5 | ABCD | 5- | 11 ps 3 | 258.5 2 355.0 937.03 5 | 7.1 10 6.9 5 100 2 | E2 E1 E1 | 1512.86 1416.67 834.295 | 3- 6+ 4+ |
1954.38 5 | BCD | 7+ | 228.70 7 381.48 5 537.70 5 | 16.9 14 100 4 48 1 | (E2) E2 (M1(+E2)) | 1725.70 1572.94 1416.67 | 6+ 5+ 6+ | |
1983.33 6 | BCD | 8+ | 566.64 5 | 100 | E2 | 1416.67 | 6+ | |
2184.53 6 | BCD | 7- | 413.20 7 767.92 5 | 19.6 14 100.0 2 | E2 E1 | 1771.33 1416.67 | 5- 6+ | |
2256.51 6 | BC | 8+ | 273.24 6 302.22 9 530.55 12 839.79 7 | 29 1 23 1 71 2 100 2 | (M1+E2) (M1+E2) (E2) E2 | 1983.33 1954.38 1725.70 1416.67 | 8+ 7+ 6+ 6+ | |
2282.1 8 | C | (4) | 769.1 977.8 | 100 10 71 6 | D(+Q) D | 1512.86 1304.41 | 3- 3+ | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2488.9 7 | C | (6) | 206.7? 717.7 915.9 | <26 34 5 100 5 | (E2) D(+Q) D | 2282.1 1771.33 1572.94 | (4) 5- 5+ | |
2588.86 7 | BC | 9+ | 605.0 3 634.50 5 | 71 6 100 2 | (M1+E2) E2 | 1983.33 1954.38 | 8+ 7+ | |
2590.59 7 | BCD | 10+ | 607.25 5 | 100 | E2 | 1983.33 | 8+ | |
2736.12 6 | BCD | 9- | 479.55 8 551.64 5 752.85 8 | 30.8 13 100 5 77 2 | (E1) [E2] E1(+M2) | 2256.51 2184.53 1983.33 | 8+ 7- 8+ | |
2775.07 9 | BC | (8) | 286.4? 820.67 7 | <8 100 | (E2) D(+Q) | 2488.9 1954.38 | (6) 7+ | |
2933.11 8 | BC | 197.8 2 949.70 6 | 33 11 100 11 | 2736.12 1983.33 | 9- 8+ | |||
2965.63 11 | BC | 10+ | 376.8 2 709.40 15 981.9 2 | 100 7 <34 <34 | (M1) (E2) E2 | 2588.86 2256.51 1983.33 | 9+ 8+ 8+ | |
3159.61 15 | BC | (10) | 384.45 15 570.6 | 20 1 100 3 | (E2) D | 2775.07 2588.86 | (8) 9+ | |
3246.41 8 | BC | 11- | 280.92 21 313.3 2 510.30 6 655.3 3 | 10 1 10 1 100 3 <3 | (E1) E2 (E1) | 2965.63 2933.11 2736.12 2590.59 | 10+ 9- 10+ | |
3269.72 9 | BCD | 12+ | 679.11 5 | 100 | E2 | 2590.59 | 10+ | |
3283.12 8 | BC | (11+) | 350.0 4 692.6 1 694.26 6 | 13 6 81 13 100 13 | (M1+E2) (E2) | 2933.11 2590.59 2588.86 | 10+ 9+ | |
3704.3 4 | B | 738.7 3 | 100 | 2965.63 | 10+ | |||
3729.68 12 | BC | (12) | 446.6 1 569.9 2 | 100 9 57 11 | D (E2) | 3283.12 3159.61 | (11+) (10) | |
3812.67 11 | BC | (13-) | 543.0 3 566.25 7 | 8 4 100 12 | (E2) | 3269.72 3246.41 | 12+ 11- | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3997.97 11 | BC | 14+ | 728.25 6 | 100 | E2 | 3269.72 | 12+ | |
4125.67 12 | BC | (13+) | 842.6 1 855.5 3 | 100 7 27 4 | (E2) (M1+E2) | 3283.12 3269.72 | (11+) 12+ | |
4433.87 15 | BC | (15-) | 621.2 1 | 100 | (E2) | 3812.67 | (13-) | |
4744.57 23 | BC | (16+) | 746.6 2 | 100 | (E2) | 3997.97 | 14+ | |
5166.67 17 | BC | (17-) | 732.80 8 | 100 | (E2) | 4433.87 | (15-) | |
5504.8 4 | BC | (18+) | 760.22 24 | 100 | (E2) | 4744.57 | (16+) |
E(level): From least-squares fit to Eγ’s; χ2(norm)=2.1 is slightly higher than χ2(critical)=1.7
Jπ(level): Based on measured multipolarities and other arguments of which most often membership in band is tacitly applied
E(γ): From 248Cm decay unless noted otherwise
I(γ): From 140I β- decay unless noted otherwise
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Yrast band. | |||||||
0.0 | 0+ | 13.60 s 10 % β- = 100 | |||||
376.658 15 | 2+ | 70.5 ps 20 | 376.657 15 | 100 | E2 | 0.0 | 0+ |
834.295 24 | 4+ | 14.2 ps 23 | 457.630 19 | 100 | E2 | 376.658 | 2+ |
1416.67 5 | 6+ | < 8.6 ps | 582.44 5 | 100 | E2 | 834.295 | 4+ |
1983.33 6 | 8+ | 566.64 5 | 100 | E2 | 1416.67 | 6+ | |
2590.59 7 | 10+ | 607.25 5 | 100 | E2 | 1983.33 | 8+ | |
3269.72 9 | 12+ | 679.11 5 | 100 | E2 | 2590.59 | 10+ | |
3997.97 11 | 14+ | 728.25 6 | 100 | E2 | 3269.72 | 12+ | |
4744.57 23 | (16+) | 746.6 2 | 100 | (E2) | 3997.97 | 14+ | |
5504.8 4 | (18+) | 760.22 24 | 100 | (E2) | 4744.57 | (16+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - 3- octupole band. | |||||||
1512.86 20 | 3- | < 7.7 ps | |||||
1771.33 5 | 5- | 11 ps 3 | 258.5 2 355.0 937.03 5 | 7.1 10 6.9 5 100 2 | E2 E1 E1 | 1512.86 1416.67 834.295 | 3- 6+ 4+ |
2184.53 6 | 7- | 413.20 7 767.92 5 | 19.6 14 100.0 2 | E2 E1 | 1771.33 1416.67 | 5- 6+ | |
2736.12 6 | 9- | 479.55 8 551.64 5 752.85 8 | 30.8 13 100 5 77 2 | (E1) [E2] E1(+M2) | 2256.51 2184.53 1983.33 | 8+ 7- 8+ | |
3246.41 8 | 11- | 280.92 21 313.3 2 510.30 6 655.3 3 | 10 1 10 1 100 3 <3 | (E1) E2 (E1) | 2965.63 2933.11 2736.12 2590.59 | 10+ 9- 10+ | |
3812.67 11 | (13-) | 543.0 3 566.25 7 | 8 4 100 12 | (E2) | 3269.72 3246.41 | 12+ 11- | |
4433.87 15 | (15-) | 621.2 1 | 100 | (E2) | 3812.67 | (13-) | |
5166.67 17 | (17-) | 732.80 8 | 100 | (E2) | 4433.87 | (15-) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - Positive band based on 3+ | |||||||
1304.41 6 | 3+ | ||||||
1572.94 5 | 5+ | 156.3 1 268.60 6 738.64 5 | 4.0 3 11.3 6 100 2 | M1+E2 E2 M1+E2 | 1416.67 1304.41 834.295 | 6+ 3+ 4+ | |
1954.38 5 | 7+ | 228.70 7 381.48 5 537.70 5 | 16.9 14 100 4 48 1 | (E2) E2 (M1(+E2)) | 1725.70 1572.94 1416.67 | 6+ 5+ 6+ | |
2588.86 7 | 9+ | 605.0 3 634.50 5 | 71 6 100 2 | (M1+E2) E2 | 1983.33 1954.38 | 8+ 7+ | |
3283.12 8 | (11+) | 350.0 4 692.6 1 694.26 6 | 13 6 81 13 100 13 | (M1+E2) (E2) | 2933.11 2590.59 2588.86 | 10+ 9+ | |
4125.67 12 | (13+) | 842.6 1 855.5 3 | 100 7 27 4 | (E2) (M1+E2) | 3283.12 3269.72 | (11+) 12+ | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 4 - Band based on J=(4). | |||||||
2282.1 8 | (4) | ||||||
2488.9 7 | (6) | 206.7? 717.7 915.9 | <26 34 5 100 5 | (E2) D(+Q) D | 2282.1 1771.33 1572.94 | (4) 5- 5+ | |
2775.07 9 | (8) | 286.4? 820.67 7 | <8 100 | (E2) D(+Q) | 2488.9 1954.38 | (6) 7+ | |
3159.61 15 | (10) | 384.45 15 570.6 | 20 1 100 3 | (E2) D | 2775.07 2588.86 | (8) 9+ | |
3729.68 12 | (12) | 446.6 1 569.9 2 | 100 9 57 11 | D (E2) | 3283.12 3159.61 | (11+) (10) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 5 - band based on J=6+ | |||||||
1725.70 5 | 6+ | ||||||
2256.51 6 | 8+ | 273.24 6 302.22 9 530.55 12 839.79 7 | 29 1 23 1 71 2 100 2 | (M1+E2) (M1+E2) (E2) E2 | 1983.33 1954.38 1725.70 1416.67 | 8+ 7+ 6+ 6+ | |
2965.63 11 | 10+ | 376.8 2 709.40 15 981.9 2 | 100 7 <34 <34 | (M1) (E2) E2 | 2588.86 2256.51 1983.33 | 9+ 8+ 8+ | |
3704.3 4 | 738.7 3 | 100 | 2965.63 | 10+ |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
376.658 | 2+ | 70.5 ps 20 | 376.657 15 | E2 | 0.0205 | B(E2)(W.u.)=24.0 7, α=0.0205, α(K)=0.01714 24, α(L)=0.00270 4, α(M)=0.000555 8, α(N)=0.0001131 16, α(O)=1.326E-5 19 | |
834.295 | 4+ | 14.2 ps 23 | 457.630 19 | E2 | 0.01154 | B(E2)(W.u.)=45 +9-6, α=0.01154, α(K)=0.00973 14, α(L)=0.001444 21, α(M)=0.000296 5, α(N)=6.05E-5 9, α(O)=7.21E-6 10 | |
1304.41 | 3+ | 470.10 9 | M1+E2 | -0.11 2 | 0.01295 | α=0.01295, α(K)=0.01118 16, α(L)=0.001417 20, α(M)=0.000287 4, α(N)=5.94×10-5 9, α(O)=7.46E-6 11 | |
3+ | 927.90 9 | M1+E2 | +0.65 15 | 0.00235 | α=0.00235 7, α(K)=0.00204 6, α(L)=0.000255 7, α(M)=5.15×10-5 14, α(N)=1.07E-5 3, α(O)=1.34E-6 4 | ||
1416.67 | 6+ | < 8.6 ps | 582.44 5 | E2 | 0.00593 | B(E2)(W.u.)>22.6, α=0.00593, α(K)=0.00505 7, α(L)=0.000707 10, α(M)=0.0001442 21, α(N)=2.96E-5 5, α(O)=3.58E-6 5 | |
1512.86 | 3- | < 7.7 ps | 678.6 | (E1) | 1.49×10-3 | B(E1)(W.u.)>2.43E-5, α=1.49E-3, α(K)=0.001294 19, α(L)=0.0001583 23, α(M)=3.19E-5 5, α(N)=6.59E-6 10, α(O)=8.22E-7 12 | |
3- | < 7.7 ps | 1136.7 | (E1) | 5.48×10-4 | B(E1)(W.u.)>1.48E-5, α=5.48E-4, α(K)=0.000469 7, α(L)=5.64E-5 8, α(M)=1.135E-5 16, α(N)=2.35E-6 4, α(O)=2.95E-7 5 | ||
1572.94 | 5+ | 156.3 1 | M1+E2 | 0.31 | α=0.31 8, α(K)=0.24 5, α(L)=0.049 23, α(M)=0.0103 49, α(N)=0.00207 96, α(O)=2.31×10-4 93 | ||
5+ | 268.60 6 | E2 | 0.0599 | α=0.0599, α(K)=0.0489 7, α(L)=0.00877 13, α(M)=0.00182 3, α(N)=0.000368 6, α(O)=4.18×10-5 6 | |||
5+ | 738.64 5 | M1+E2 | +0.51 4 | 0.00411 | α=0.00411 7, α(K)=0.00355 6, α(L)=0.000448 7, α(M)=9.06×10-5 14, α(N)=1.87E-5 3, α(O)=2.35E-6 4 | ||
1725.70 | 6+ | 309.10 5 | M1+E2 | +0.48 4 | 0.0378 | α=0.0378, α(K)=0.0323 5, α(L)=0.00438 7, α(M)=0.000892 14, α(N)=0.000184 3, α(O)=2.26×10-5 4 | |
6+ | 891.20 7 | E2 | 0.00209 | α=0.00209, α(K)=0.00180 3, α(L)=0.000234 4, α(M)=4.75×10-5 7, α(N)=9.79E-6 14, α(O)=1.210E-6 17 | |||
1771.33 | 5- | 11 ps 3 | 258.5 2 | E2 | 0.0679 | B(E2)(W.u.)=64 +38-22, α=0.0679, α(K)=0.0552 8, α(L)=0.01010 15, α(M)=0.00210 3, α(N)=0.000424 6, α(O)=4.80E-5 7 | |
5- | 11 ps 3 | 355.0 | E1 | 0.00676 | B(E1)(W.u.)=3.1E-5 +16-9, α=0.00676, α(K)=0.00585 9, α(L)=0.000731 11, α(M)=0.0001474 21, α(N)=3.04E-5 5, α(O)=3.75E-6 6 | ||
5- | 11 ps 3 | 937.03 5 | E1 | 7.75×10-4 | B(E1)(W.u.)=2.4E-5 +10-6, α=7.75E-4, α(K)=0.000673 10, α(L)=8.15E-5 12, α(M)=1.640E-5 23, α(N)=3.39E-6 5, α(O)=4.25E-7 6 | ||
1954.38 | 7+ | 228.70 7 | (E2) | 0.1021 | α=0.1021, α(K)=0.0821 12, α(L)=0.01597 23, α(M)=0.00333 5, α(N)=0.000671 10, α(O)=7.50×10-5 11 | ||
7+ | 381.48 5 | E2 | 0.0197 | α=0.0197, α(K)=0.01650 24, α(L)=0.00259 4, α(M)=0.000532 8, α(N)=0.0001084 16, α(O)=1.273×10-5 18 | |||
7+ | 537.70 5 | (M1(+E2)) | 0.0083 | α=0.0083 10, α(K)=0.0071 9, α(L)=0.00095 7, α(M)=0.000193 12, α(N)=4.0×10-5 3, α(O)=4.9E-6 5 | |||
1983.33 | 8+ | 566.64 5 | E2 | 0.00638 | α=0.00638, α(K)=0.00543 8, α(L)=0.000764 11, α(M)=0.0001560 22, α(N)=3.20×10-5 5, α(O)=3.87E-6 6 | ||
2184.53 | 7- | 413.20 7 | E2 | 0.01554 | α=0.01554, α(K)=0.01304 19, α(L)=0.00199 3, α(M)=0.000409 6, α(N)=8.35×10-5 12, α(O)=9.87E-6 14 | ||
7- | 767.92 5 | E1 | 1.15×10-3 | α=1.15×10-3, α(K)=0.000999 14, α(L)=0.0001218 17, α(M)=2.45E-5 4, α(N)=5.07E-6 7, α(O)=6.33E-7 9 | |||
2256.51 | 8+ | 273.24 6 | (M1+E2) | 0.0543 | α=0.0543 25, α(K)=0.0455 10, α(L)=0.0070 13, α(M)=0.0014 3, α(N)=0.00029 6, α(O)=3.5×10-5 5 | ||
8+ | 302.22 9 | (M1+E2) | 0.0404 | α=0.0404 8, α(K)=0.0340 7, α(L)=0.0051 7, α(M)=0.00104 15, α(N)=0.00021 3, α(O)=2.55×10-5 23 | |||
8+ | 530.55 12 | (E2) | 0.00762 | α=0.00762, α(K)=0.00647 9, α(L)=0.000925 13, α(M)=0.000189 3, α(N)=3.87×10-5 6, α(O)=4.66E-6 7 | |||
8+ | 839.79 7 | E2 | 0.00240 | α=0.00240, α(K)=0.00206 3, α(L)=0.000270 4, α(M)=5.48×10-5 8, α(N)=1.130E-5 16, α(O)=1.393E-6 20 | |||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
2488.9 | (6) | 206.7 | (E2) | 0.1437 | α=0.1437, α(K)=0.1142 16, α(L)=0.0235 4, α(M)=0.00492 7, α(N)=0.000990 14, α(O)=0.0001093 16 | ||
2588.86 | 9+ | 605.0 3 | (M1+E2) | 0.0062 | α=0.0062 9, α(K)=0.0053 8, α(L)=0.00070 7, α(M)=0.000141 12, α(N)=2.9×10-5 3, α(O)=3.6E-6 4 | ||
9+ | 634.50 5 | E2 | 0.00475 | α=0.00475, α(K)=0.00405 6, α(L)=0.000557 8, α(M)=0.0001135 16, α(N)=2.33×10-5 4, α(O)=2.84E-6 4 | |||
2590.59 | 10+ | 607.25 5 | E2 | 0.00532 | α=0.00532, α(K)=0.00453 7, α(L)=0.000629 9, α(M)=0.0001282 18, α(N)=2.63×10-5 4, α(O)=3.19E-6 5 | ||
2736.12 | 9- | 479.55 8 | (E1) | 0.00325 | α=0.00325, α(K)=0.00281 4, α(L)=0.000348 5, α(M)=7.02×10-5 10, α(N)=1.447E-5 21, α(O)=1.80E-6 3 | ||
9- | 551.64 5 | [E2] | 0.00686 | α=0.00686, α(K)=0.00583 9, α(L)=0.000826 12, α(M)=0.0001685 24, α(N)=3.46×10-5 5, α(O)=4.17E-6 6 | |||
9- | 752.85 8 | E1(+M2) | +0.007 14 | 1.20×10-3 | α=1.20×10-3 2, α(K)=0.001041 15, α(L)=0.0001270 19, α(M)=2.56E-5 4, α(N)=5.28E-6 8, α(O)=6.60E-7 10 | ||
2775.07 | (8) | 286.4 | (E2) | 0.0486 | α=0.0486, α(K)=0.0399 6, α(L)=0.00695 10, α(M)=0.001440 21, α(N)=0.000292 4, α(O)=3.34×10-5 5 | ||
2965.63 | 10+ | 376.8 2 | (M1) | 0.0226 | α=0.0226, α(K)=0.0195 3, α(L)=0.00249 4, α(M)=0.000505 7, α(N)=0.0001045 15, α(O)=1.311×10-5 19 | ||
10+ | 709.40 15 | (E2) | 0.00359 | α=0.00359, α(K)=0.00307 5, α(L)=0.000414 6, α(M)=8.41×10-5 12, α(N)=1.731E-5 25, α(O)=2.12E-6 3 | |||
10+ | 981.9 2 | E2 | 1.69×10-3 | α=1.69×10-3, α(K)=0.001453 21, α(L)=0.000187 3, α(M)=3.78E-5 6, α(N)=7.80E-6 11, α(O)=9.67E-7 14 | |||
3159.61 | (10) | 384.45 15 | (E2) | 0.0193 | α=0.0193, α(K)=0.01613 23, α(L)=0.00252 4, α(M)=0.000518 8, α(N)=0.0001057 15, α(O)=1.241×10-5 18 | ||
3246.41 | 11- | 280.92 21 | (E1) | 0.01235 | α=0.01235, α(K)=0.01067 15, α(L)=0.001345 19, α(M)=0.000271 4, α(N)=5.58×10-5 8, α(O)=6.85E-6 10 | ||
11- | 510.30 6 | E2 | 0.00848 | α=0.00848, α(K)=0.00719 10, α(L)=0.001037 15, α(M)=0.000212 3, α(N)=4.34×10-5 6, α(O)=5.21E-6 8 | |||
11- | 655.3 3 | (E1) | 1.61×10-3 | α=1.61×10-3, α(K)=0.001394 20, α(L)=0.0001708 24, α(M)=3.44E-5 5, α(N)=7.10E-6 10, α(O)=8.86E-7 13 | |||
3269.72 | 12+ | 679.11 5 | E2 | 0.00400 | α=0.00400, α(K)=0.00342 5, α(L)=0.000464 7, α(M)=9.44×10-5 14, α(N)=1.94E-5 3, α(O)=2.37E-6 4 | ||
3283.12 | (11+) | 692.6 1 | (M1+E2) | 0.0044 | α=0.0044 7, α(K)=0.0038 6, α(L)=0.00049 6, α(M)=0.000100 11, α(N)=2.06×10-5 23, α(O)=2.6E-6 4 | ||
(11+) | 694.26 6 | (E2) | 0.00378 | α=0.00378, α(K)=0.00324 5, α(L)=0.000438 7, α(M)=8.91×10-5 13, α(N)=1.83E-5 3, α(O)=2.24E-6 4 | |||
3729.68 | (12) | 569.9 2 | (E2) | 0.00629 | α=0.00629, α(K)=0.00535 8, α(L)=0.000752 11, α(M)=0.0001534 22, α(N)=3.15×10-5 5, α(O)=3.80E-6 6 | ||
3812.67 | (13-) | 566.25 7 | (E2) | 0.00639 | α=0.00639, α(K)=0.00544 8, α(L)=0.000766 11, α(M)=0.0001563 22, α(N)=3.21×10-5 5, α(O)=3.87E-6 6 | ||
3997.97 | 14+ | 728.25 6 | E2 | 0.00337 | α=0.00337, α(K)=0.00288 4, α(L)=0.000387 6, α(M)=7.86×10-5 11, α(N)=1.617E-5 23, α(O)=1.98E-6 3 | ||
4125.67 | (13+) | 842.6 1 | (E2) | 0.00238 | α=0.00238, α(K)=0.00205 3, α(L)=0.000268 4, α(M)=5.44×10-5 8, α(N)=1.121E-5 16, α(O)=1.382E-6 20 | ||
(13+) | 855.5 3 | (M1+E2) | 0.0027 | α=0.0027 4, α(K)=0.0023 4, α(L)=0.00029 4, α(M)=5.9×10-5 8, α(N)=1.23E-5 15, α(O)=1.54E-6 21 | |||
4433.87 | (15-) | 621.2 1 | (E2) | 0.00501 | α=0.00501, α(K)=0.00428 6, α(L)=0.000591 9, α(M)=0.0001203 17, α(N)=2.47×10-5 4, α(O)=3.00E-6 5 | ||
4744.57 | (16+) | 746.6 2 | (E2) | 0.00317 | α=0.00317, α(K)=0.00272 4, α(L)=0.000363 5, α(M)=7.37×10-5 11, α(N)=1.517E-5 22, α(O)=1.86E-6 3 | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
5166.67 | (17-) | 732.80 8 | (E2) | 0.00331 | α=0.00331, α(K)=0.00284 4, α(L)=0.000380 6, α(M)=7.73×10-5 11, α(N)=1.591E-5 23, α(O)=1.95E-6 3 | ||
5504.8 | (18+) | 760.22 24 | (E2) | 0.00303 | α=0.00303, α(K)=0.00260 4, α(L)=0.000346 5, α(M)=7.03×10-5 10, α(N)=1.449E-5 21, α(O)=1.778E-6 25 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 13.60 s 10 % β- = 100 | RMS charge radius <r2>1/2=4.8566 fm 125 (2013An02). E(level): Yrast band. |
376.658 | 2+ | 70.5 ps 20 | μ=1.1 3 2016Il01 deduce g factor=0.56 19 using their lifetime and measured g|t from 2009Go09, as compared to g factor=0.35 12 in 2009Go09. E(level): Yrast band. |
834.295 | 4+ | 14.2 ps 23 | E(level): Yrast band. |
1304.41 | 3+ | E(level): Positive band based on 3+. | |
1416.67 | 6+ | < 8.6 ps | E(level): Yrast band. |
1512.86 | 3- | < 7.7 ps | E(level): 3- octupole band. |
1572.94 | 5+ | E(level): Positive band based on 3+. | |
1725.70 | 6+ | E(level): band based on J=6+. | |
1771.33 | 5- | 11 ps 3 | E(level): 3- octupole band. |
1954.38 | 7+ | E(level): Positive band based on 3+. | |
1983.33 | 8+ | E(level): Yrast band. | |
2184.53 | 7- | E(level): 3- octupole band. | |
2256.51 | 8+ | E(level): band based on J=6+. | |
2282.1 | (4) | E(level): Band based on J=(4). | |
2488.9 | (6) | E(level): Band based on J=(4). | |
2588.86 | 9+ | E(level): Positive band based on 3+. | |
2590.59 | 10+ | E(level): Yrast band. | |
2736.12 | 9- | E(level): 3- octupole band. | |
2775.07 | (8) | E(level): Band based on J=(4). | |
2965.63 | 10+ | E(level): band based on J=6+. | |
3159.61 | (10) | E(level): Band based on J=(4). | |
3246.41 | 11- | E(level): 3- octupole band. | |
3269.72 | 12+ | E(level): Yrast band. | |
3283.12 | (11+) | E(level): Positive band based on 3+. | |
3704.3 | E(level): band based on J=6+. | ||
E(level) | Jπ(level) | T1/2(level) | Comments |
3729.68 | (12) | E(level): Band based on J=(4). | |
3812.67 | (13-) | E(level): 3- octupole band. | |
3997.97 | 14+ | E(level): Yrast band. | |
4125.67 | (13+) | E(level): Positive band based on 3+. | |
4433.87 | (15-) | E(level): 3- octupole band. | |
4744.57 | (16+) | E(level): Yrast band. | |
5166.67 | (17-) | E(level): 3- octupole band. | |
5504.8 | (18+) | E(level): Yrast band. |
E(level) | E(gamma) | Comments |
376.658 | 376.657 | E(γ): From 140I β- decay M(γ): α(K)exp in β- dataset |
834.295 | 457.630 | E(γ): From 140I β- decay M(γ): α(K)exp in β- dataset |
1304.41 | 470.10 | I(γ): From 252Cf SF decay | 927.90 | I(γ): From 252Cf SF decay |
1416.67 | 582.44 | M(γ): α(K)exp in β- dataset |
1443.0 | 1066.3 | I(γ): From 248Cm SF decay |
1512.86 | 678.6 | E(γ): From 140I β- decay | 1136.7 | E(γ): From 140I β- decay |
1572.94 | 156.3 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 268.60 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 738.64 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
1725.70 | 309.10 | I(γ): From 252Cf SF decay | 891.20 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
1771.33 | 258.5 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 355.0 | M(γ): α(K)exp in β- dataset | 937.03 | M(γ): α(K)exp in β- dataset |
1954.38 | 228.70 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 381.48 | I(γ): From 252Cf SF decay | 537.70 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
1983.33 | 566.64 | I(γ): From 252Cf SF decay |
2184.53 | 413.20 | I(γ): From 252Cf SF decay M(γ): deduced in SF decay: E2,M2 for this γ, M2 excluded by non-observance of T1/2>10 ns for the octupole band. From 252Cf SF decay from γγ(θ) | 767.92 | I(γ): From 252Cf SF decay |
2256.51 | 273.24 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 302.22 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 530.55 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 839.79 | I(γ): From 252Cf SF decay |
E(level) | E(gamma) | Comments |
2282.1 | 769.1 | E(γ): From 248Cm SF decay I(γ): From 252Cf SF decay M(γ): (M1+E2) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) | 977.8 | E(γ): From 248Cm SF decay I(γ): From 252Cf SF decay M(γ): (E1) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) |
2488.9 | 206.7 | E(γ): From 248Cm SF decay I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 717.7 | E(γ): From 248Cm SF decay I(γ): From 252Cf SF decay M(γ): (M1+E2) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) | 915.9 | E(γ): From 248Cm SF decay I(γ): From 252Cf SF decay M(γ): (E1) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) |
2588.86 | 605.0 | I(γ): From 252Cf SF decay | 634.50 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
2590.59 | 607.25 | M(γ): From 252Cf SF decay from γγ(θ) |
2736.12 | 479.55 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 551.64 | I(γ): From 252Cf SF decay | 752.85 | I(γ): From 252Cf SF decay |
2775.07 | 286.4 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 820.67 | I(γ): From 252Cf SF decay |
2933.11 | 197.8 | E(γ): poor fit (Eγ differs by ΔE(levels) by more than 4σ) I(γ): From 248Cm SF decay | 949.70 | I(γ): From 248Cm SF decay |
2965.63 | 376.8 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 709.40 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 981.9 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
3159.61 | 384.45 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 570.6 | I(γ): From 252Cf SF decay M(γ): (E1) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) |
3246.41 | 280.92 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 313.3 | I(γ): From 252Cf SF decay | 510.30 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 655.3 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
3269.72 | 679.11 | M(γ): From 252Cf SF decay from γγ(θ) |
E(level) | E(gamma) | Comments |
3283.12 | 350.0 | I(γ): From 252Cf SF decay | 692.6 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) | 694.26 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
3729.68 | 446.6 | I(γ): From 252Cf SF decay M(γ): (E1) not adopted (see general disagreement comment). From 252Cf SF decay from γγ(θ) | 569.9 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
3812.67 | 543.0 | I(γ): From 248Cm SF decay | 566.25 | I(γ): From 252Cf SF decay M(γ): From 252Cf SF decay from γγ(θ) |
3997.97 | 728.25 | M(γ): From 252Cf SF decay from γγ(θ) |
4125.67 | 842.6 | M(γ): From 252Cf SF decay from γγ(θ) | 855.5 | M(γ): From 252Cf SF decay from γγ(θ) |
4433.87 | 621.2 | M(γ): From 252Cf SF decay from γγ(θ) |
4744.57 | 746.6 | M(γ): From 252Cf SF decay from γγ(θ) |
5166.67 | 732.80 | M(γ): From 252Cf SF decay from γγ(θ) |
5504.8 | 760.22 | I(γ): From 252Cf SF decay |
Fission yields: 2005Ga25, 2005Ga50, 2004Ga60, 2004GaZV, 2004GaZZ, 2004GaZY, 2003Ga21, 2003St03, 2002Ib01, 2000Lh02, 2000Ka02, 2000JoZZ, 2000Ga60, 1998Ph04.
Angular momenta of 252Cf fission fragments: 2005Ja12
Levels: Disagreement comment (reproduced from 252Cf SF decay dataset): Although there is a general good agreement in between the experimental work of 2016Ur01 (248Cm SF decay), 2016Hu10, and 2017Na15 (252Cf SF decay; 2017Na15, same group of authors as 2016Ur01) there is disagreement as concern the parity of band d leading to quite different theoretical interpretations. Thus while 2016Ur01 argue for the γ collectivity of band C and d (with π=+ assigned for band C and no parity assigned for band d), 2016Hu10 later argue for s=|+1 doublet octupole bands based essentially on assigned π=- for band d. This indeed is based on tentative (E1) assignments for all five ΔJ=1 transitions linking band d to C. However 2017Na15 based on the relatively high quadrupole mixing ratio of 821γ, one of these ΔJ=1 transitions, concluded that this is rather a (M1+E2) transition which qualifies band d as π=+, which contradicts the interpretation of 2016Hu10 and sustains that of 2016Ur01. However 2017Na15 did not report measurement on any of the other four (E1) linking transitions. Based on these experimental findings the evaluator adopts no parity for band d and no E1 or M1 character for the linking transitions before more extensive and precise measurements are going to be published.
Gammas: See 140I β- for unplaced γ’s