ADOPTED LEVELS, GAMMAS for 224Th
Authors: Balraj Singh, Sukhjeet Singh | Citation: ENSDF | Cutoff date: 08-Mar-2022
Authors: Sukhjeet Singh, Balraj Singh | Citation: Nucl. Data Sheets 130, 127 (2015) | Cutoff date: 15-Oct-2015
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-3867 keV 12 | S(n)= 7461 keV 12 | S(p)= 5118 keV 12 | Q(α)= 7299 keV 6 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 228U α decay (9.1 M) | B | 208Pb(16O,Fγ):GDR |
| C | 208Pb(18O,2nγ) | D | 226Ra(α,6nγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A CD | 0+ | 1.04 s 2 % α = 100 | |||||
| 98.1 3 | A CD | 2+ | 0.590 ns 40 | 98.1 3 | 100 | E2 | 0.0 | 0+ |
| 251.0 3 ? | A D | (1-) | 152.9 3 246 3 | 50 13 100 25 | [E1] [E1] | 98.1 0.0 | 2+ 0+ | |
| 284.1 5 | A CD | 4+ | 186.0 3 | 100 | E2 | 98.1 | 2+ | |
| 305.3 5 | CD | (3-) | 207.2 3 | 100 | (E1) | 98.1 | 2+ | |
| 464.5 5 | CD | (5-) | 180.4 3 | 100 | (E1) | 284.1 | 4+ | |
| 534.7 5 | CD | 6+ | 70.2 3 250.6 3 | 85 25 100 | [E1] (E2) | 464.5 284.1 | (5-) 4+ | |
| 699.5 5 | CD | (7-) | 164.8 3 235.0 3 | | (E1) | 534.7 464.5 | 6+ (5-) | |
| 833.9 6 | CD | 8+ | 134.4 3 299.2 3 | 100 50 10 | (E1) [E2] | 699.5 534.7 | (7-) 6+ | |
| 997.7 6 | CD | (9-) | 163.8 3 298.2 3 | | 833.9 699.5 | 8+ (7-) | ||
| 1173.8 6 | CD | 10+ | 176.1 3 339.9 3 | 100 36 4 | (E1) [E2] | 997.7 833.9 | (9-) 8+ | |
| 1347.3 6 | CD | (11-) | 173.4 3 349.6 3 | 100 30 4 | (E1) [E2] | 1173.8 997.7 | 10+ (9-) | |
| 1549.8 6 | D | 12+ | 202.5 3 376.0 3 | 100 29 3 | [E1] [E2] | 1347.3 1173.8 | (11-) 10+ | |
| 1738.7 6 | D | (13-) | 188.9 3 391.4 3 | 100 50 5 | [E1] [E2] | 1549.8 1347.3 | 12+ (11-) | |
| 1958.9 7 | D | 14+ | 220.2 3 409.0 3 | 100 29 3 | [E1] [E2] | 1738.7 1549.8 | (13-) 12+ | |
| 2164.7 7 | D | (15-) | 205.8 3 426.1 3 | 100 45 6 | [E1] [E2] | 1958.9 1738.7 | 14+ (13-) | |
| 2398.0 7 | D | 16+ | 233.3 3 439.1 3 | | 2164.7 1958.9 | (15-) 14+ | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2620.2 7 ? | D | (17-) | 222.3? 455.4 3 ? | 100 42 11 | [E1] [E2] | 2398.0 2164.7 | 16+ (15-) | |
| 2864? | D | 18+ | 466? | | 2398.0 | 16+ | ||
| 10.8E3 3 | B | 4.4 MeV 6 | ||||||
| 14.1E3 6 | B | 5.9 MeV 10 | ||||||
E(level): From least squares fit to Eγ data
Jπ(level): Based on multipolarities for selected transitions in in-beam γ-ray studies, band structures and systematics of neighboring nuclides, unless specific arguments are given
M(γ): From γ(θ) data in (18O,2nγ), unless otherwise stated
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Kπ=0+ g.s. band | |||||||
| 0.0 | 0+ | 1.04 s 2 % α = 100 | |||||
| 98.1 3 | 2+ | 0.590 ns 40 | 98.1 3 | 100 | E2 | 0.0 | 0+ |
| 284.1 5 | 4+ | 186.0 3 | 100 | E2 | 98.1 | 2+ | |
| 534.7 5 | 6+ | 70.2 3 250.6 3 | 85 25 100 | [E1] (E2) | 464.5 284.1 | (5-) 4+ | |
| 833.9 6 | 8+ | 134.4 3 299.2 3 | 100 50 10 | (E1) [E2] | 699.5 534.7 | (7-) 6+ | |
| 1173.8 6 | 10+ | 176.1 3 339.9 3 | 100 36 4 | (E1) [E2] | 997.7 833.9 | (9-) 8+ | |
| 1549.8 6 | 12+ | 202.5 3 376.0 3 | 100 29 3 | [E1] [E2] | 1347.3 1173.8 | (11-) 10+ | |
| 1958.9 7 | 14+ | 220.2 3 409.0 3 | 100 29 3 | [E1] [E2] | 1738.7 1549.8 | (13-) 12+ | |
| 2398.0 7 | 16+ | 233.3 3 439.1 3 | | 2164.7 1958.9 | (15-) 14+ | ||
| 2864 | 18+ | 466? | | 2398.0 | 16+ | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - Kπ=0- band | |||||||
| 251.0 3 | (1-) | ||||||
| 305.3 5 | (3-) | 207.2 3 | 100 | (E1) | 98.1 | 2+ | |
| 464.5 5 | (5-) | 180.4 3 | 100 | (E1) | 284.1 | 4+ | |
| 699.5 5 | (7-) | 164.8 3 235.0 3 | | (E1) | 534.7 464.5 | 6+ (5-) | |
| 997.7 6 | (9-) | 163.8 3 298.2 3 | | 833.9 699.5 | 8+ (7-) | ||
| 1347.3 6 | (11-) | 173.4 3 349.6 3 | 100 30 4 | (E1) [E2] | 1173.8 997.7 | 10+ (9-) | |
| 1738.7 6 | (13-) | 188.9 3 391.4 3 | 100 50 5 | [E1] [E2] | 1549.8 1347.3 | 12+ (11-) | |
| 2164.7 7 | (15-) | 205.8 3 426.1 3 | 100 45 6 | [E1] [E2] | 1958.9 1738.7 | 14+ (13-) | |
| 2620.2 7 | (17-) | 222.3? 455.4 3 ? | 100 42 11 | [E1] [E2] | 2398.0 2164.7 | 16+ (15-) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 98.1 | 2+ | 0.590 ns 40 | 98.1 3 | E2 | 12.33 | B(E2)(W.u.)=96 7, α=12.33 25 |
| 251.0 | (1-) | 152.9 3 | [E1] | 0.179 | α=0.179 | |
| (1-) | 246 3 | [E1] | 0.059 | α=0.059 | ||
| 284.1 | 4+ | 186.0 3 | E2 | 0.863 | α=0.863 | |
| 305.3 | (3-) | 207.2 3 | (E1) | 0.0868 | α=0.0868 | |
| 464.5 | (5-) | 180.4 3 | (E1) | 0.1204 | α=0.1204 | |
| 534.7 | 6+ | 70.2 3 | [E1] | 0.299 | α=0.299 6 | |
| 6+ | 250.6 3 | (E2) | 0.299 | α=0.299 | ||
| 699.5 | (7-) | 164.8 3 | (E1) | 0.151 | α=0.151 | |
| 833.9 | 8+ | 134.4 3 | (E1) | 0.243 | α=0.243 | |
| 8+ | 299.2 3 | [E2] | 0.170 | α=0.170 | ||
| 1173.8 | 10+ | 176.1 3 | (E1) | 0.1276 | α=0.1276 | |
| 10+ | 339.9 3 | [E2] | 0.1166 | α=0.1166 | ||
| 1347.3 | (11-) | 173.4 3 | (E1) | 0.1323 | α=0.1323 | |
| (11-) | 349.6 3 | [E2] | 0.1076 | α=0.1076 | ||
| 1549.8 | 12+ | 202.5 3 | [E1] | 0.0916 | α=0.0916 | |
| 12+ | 376.0 3 | [E2] | 0.0880 | α=0.0880 | ||
| 1738.7 | (13-) | 188.9 3 | [E1] | 0.1080 | α=0.1080 | |
| (13-) | 391.4 3 | [E2] | 0.0790 | α=0.0790 | ||
| 1958.9 | 14+ | 220.2 3 | [E1] | 0.0753 | α=0.0753 | |
| 14+ | 409.0 3 | [E2] | 0.0703 | α=0.0703 | ||
| 2164.7 | (15-) | 205.8 3 | [E1] | 0.0882 | α=0.0882 | |
| (15-) | 426.1 3 | [E2] | 0.0633 | α=0.0633 | ||
| 2620.2 | (17-) | 222.3 | [E1] | 0.0737 | α=0.0737 | |
| (17-) | 455.4 3 | [E2] | 0.0535 | α=0.0535 | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 1.04 s 2 % α = 100 | E(level): Kπ=0+ g.s. band. |
| 98.1 | 2+ | 0.590 ns 40 | E(level): Kπ=0+ g.s. band. |
| 251.0 | (1-) | XREF: d(?). E(level): Kπ=0- band. | |
| 284.1 | 4+ | E(level): Kπ=0+ g.s. band. | |
| 305.3 | (3-) | E(level): Kπ=0- band. | |
| 464.5 | (5-) | E(level): Kπ=0- band. | |
| 534.7 | 6+ | D0/Q0=7.3×10-4 fm-1 11. E(level): Kπ=0+ g.s. band. | |
| 699.5 | (7-) | E(level): Kπ=0- band. | |
| 833.9 | 8+ | D0/Q0=6.7×10-4 fm-1 7. E(level): Kπ=0+ g.s. band. | |
| 997.7 | (9-) | E(level): Kπ=0- band. | |
| 1173.8 | 10+ | D0/Q0=7.3×10-4 fm-1 4. E(level): Kπ=0+ g.s. band. | |
| 1347.3 | (11-) | XREF: C(?). E(level): Kπ=0- band. | |
| 1549.8 | 12+ | D0/Q0=8.4×10-4 fm-1 4. E(level): Kπ=0+ g.s. band. | |
| 1738.7 | (13-) | D0/Q0=8.0×10-4 fm-1 4. E(level): Kπ=0- band. | |
| 1958.9 | 14+ | D0/Q0=9.3×10-4 fm-1 5. E(level): Kπ=0+ g.s. band. | |
| 2164.7 | (15-) | D0/Q0=8.9×10-4 fm-1 6. E(level): Kπ=0- band. | |
| 2398.0 | 16+ | E(level): Kπ=0+ g.s. band. | |
| 2620.2 | (17-) | D0/Q0=10.0×10-4 fm-1 13. E(level): Kπ=0- band. | |
| 2864 | 18+ | E(level): Kπ=0+ g.s. band. | |
| 10.8E3 | 4.4 MeV 6 | E(level): GDR. | |
| 14.1E3 | 5.9 MeV 10 | E(level): GDR. |
| E(level) | E(gamma) | Comments |
| 98.1 | 98.1 | M(γ): Intensities of L1, and L2+L3 peaks in (18O,2nγ) displayed in spectral figure 1 of 1986Sc12 are consistent with E2 |
| 251.0 | 152.9 | I(γ): from 228U α decay |
| 284.1 | 186.0 | M(γ): Intensities of L1, and L2+L3 peaks in (18O,2nγ) displayed in spectral figure 1 of 1986Sc12 are consistent with E2 |
224Th isotope identified and produced by 1949Me54 in Th(α,X) at E(α)=100-120 MeV, with an estimated half-life of ≈1 s. Later studies of 224Th decay: 1958To25, 1961Ru06, 1970Va13, 1978IbZZ, 1989An13, 2000He17
2020Cs01: theoretical structure calculations for levels, Jπ, low-lying bandheads using pseudo- and proxy-SU(3) semimicroscopic algebraic quartet model (SAQM).
Theoretical calculations: 109 references extracted from the NSR database are listed in document records.
Levels: D0/Q0=electric dipole moment to electric quadrupole moment ratio deduced by 1993Ac02 from B(E1)/B(E2) ratios determined in (α,6nγ) reaction
Q-value: S(2n)=13350 14, S(2p)=8903 10 (2021Wa16)