ADOPTED LEVELS, GAMMAS for 234Th
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 108, 681 (2007) | Cutoff date: 1-Jun-2006
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=274 keV 4 | S(n)= 6191 keV 4 | S(p)= 7983 keV 14 | Q(α)= 3673 keV 11 | ||
Reference: 2012WA38 |
References: | |||
A | 238U α decay | B | 234Ac β- decay |
C | 232Th(136Xe,xγ) | D | 238U(d,6Li) |
E | 232Th(18O,16OG) | F | 232Th(t,p) E=20 MeV |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABCDEF | 0+ | 24.10 d 3 % β- = 100 | |||||
49.55 6 | ABCDEF | 2+ | 0.37 ns 3 | 49.55 6 | | E2 | 0.0 | 0+ |
163.05 12 | ABCDEF | 4+ | 113.5 1 | | E2 | 49.55 | 2+ | |
336.45 24 | CDE | 6+ | 173.4 2 | 100.0 | E2 | 163.05 | 4+ | |
564.7 3 | CDE | 8+ | 228.3 2 | 100.0 | E2 | 336.45 | 6+ | |
688.38 22 | B | (1-) | 638.7 3 688.5 3 | 59 12 100 14 | 49.55 0.0 | 2+ 0+ | ||
810 30 | D | (0+) | ||||||
842.5 4 | C E | 10+ | 277.8 2 | 100.0 | E2 | 564.7 | 8+ | |
995.0 5 | C | (7-) | 658.4 5 | 100 | 336.45 | 6+ | ||
1150 40 | D | (0+) | ||||||
1164.9 6 | C E | (12+) | 322.3 5 | 100.0 | E2 | 842.5 | 10+ | |
1194.8 5 | C | (9-) | 199.7 5 630.1 5 | 6E1 3 100 12 | E2 E1 | 995.0 564.7 | (7-) 8+ | |
1441.9 5 | C | (11-) | 247.1 5 599.4 5 | 100 19 72 9 | E2 E1 | 1194.8 842.5 | (9-) 10+ | |
1470 40 | D | (0+) | ||||||
1526.6 7 | C | (14+) | 361.8 5 | 100.0 | E2 | 1164.9 | (12+) | |
1731.0 6 | C | (13-) | 289.1 5 566.0 5 | 1.0E2 4 41 13 | E2 E1 | 1441.9 1164.9 | (11-) (12+) | |
1896.3 15 | B | (1,2+) | 1847 2 1896 2 | 100 17 64 15 | 49.55 0.0 | 2+ 0+ | ||
1913.0 15 | B | (1,2+) | 1751 2 1912 2 | 64 16 100 20 | 163.05 0.0 | 4+ 0+ | ||
1923.4 8 | C | (16+) | 396.8 5 | 100.0 | E2 | 1526.6 | (14+) | |
2059.2 7 | C | (15-) | 328.2 5 532.7 5 | 100 16 10 4 | E2 E1 | 1731.0 1526.6 | (13-) (14+) | |
2351.0 9 | C | (18+) | 427.6 5 | 100.0 | E2 | 1923.4 | (16+) | |
2422.9 8 | C | (17-) | 363.7 5 499.4 5 | 100 24 10 4 | E2 E1 | 2059.2 1923.4 | (15-) (16+) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2805.1 11 | C | (20+) | 454.1 5 | 100.0 | E2 | 2351.0 | (18+) | |
2816.6 9 | C | (19-) | 393.7 5 465.8 5 ? | 1.0E2 3 | E2 | 2422.9 2351.0 | (17-) (18+) | |
3238.3 11 | C | (21-) | 421.7 5 | 100.0 | E2 | 2816.6 | (19-) | |
3281.4 12 | C | (22+) | 476.3 5 | 100.0 | E2 | 2805.1 | (20+) | |
3684.3 12 | C | (23-) | 446.0 5 | 100.0 | E2 | 3238.3 | (21-) | |
3775.1 13 | C | (24+) | 493.7 5 | 100.0 | E2 | 3281.4 | (22+) |
E(level): From least squares fit to Eγ
Jπ(level): Mostly from (136Xe,Xγ) based on γγ(θ) and band assignments, unless stated explicitly.
E(γ): From 238U α decay, 234Ac β- decay and 234Th(136Xe,Xγ)
I(γ): Relative photon intensity deexciting each level.
M(γ): E2 multipolarity for the 49.55 and 113.5 γ rays are from 238U α decay; quadrupole character for the 173.5-, 228.3- 278.2-keV γ rays were deduced by 1989Ge01 from particle-γ angular correlation measurements in 232Th(18O,16Oγ) reaction.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - GS band. | |||||||
0.0 | 0+ | 24.10 d 3 % β- = 100 | |||||
49.55 6 | 2+ | 0.37 ns 3 | 49.55 6 | | E2 | 0.0 | 0+ |
163.05 12 | 4+ | 113.5 1 | | E2 | 49.55 | 2+ | |
336.45 24 | 6+ | 173.4 2 | 100.0 | E2 | 163.05 | 4+ | |
564.7 3 | 8+ | 228.3 2 | 100.0 | E2 | 336.45 | 6+ | |
842.5 4 | 10+ | 277.8 2 | 100.0 | E2 | 564.7 | 8+ | |
1164.9 6 | (12+) | ||||||
1526.6 7 | (14+) | 361.8 5 | 100.0 | E2 | 1164.9 | (12+) | |
1923.4 8 | (16+) | 396.8 5 | 100.0 | E2 | 1526.6 | (14+) | |
2351.0 9 | (18+) | ||||||
2805.1 11 | (20+) | 454.1 5 | 100.0 | E2 | 2351.0 | (18+) | |
3281.4 12 | (22+) | 476.3 5 | 100.0 | E2 | 2805.1 | (20+) | |
3775.1 13 | (24+) | 493.7 5 | 100.0 | E2 | 3281.4 | (22+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - octupole band | |||||||
995.0 5 | (7-) | ||||||
1194.8 5 | (9-) | 199.7 5 630.1 5 | 6E1 3 100 12 | E2 E1 | 995.0 564.7 | (7-) 8+ | |
1441.9 5 | (11-) | 247.1 5 599.4 5 | 100 19 72 9 | E2 E1 | 1194.8 842.5 | (9-) 10+ | |
1731.0 6 | (13-) | 289.1 5 566.0 5 | 1.0E2 4 41 13 | E2 E1 | 1441.9 1164.9 | (11-) (12+) | |
2059.2 7 | (15-) | 328.2 5 532.7 5 | 100 16 10 4 | E2 E1 | 1731.0 1526.6 | (13-) (14+) | |
2422.9 8 | (17-) | 363.7 5 499.4 5 | 100 24 10 4 | E2 E1 | 2059.2 1923.4 | (15-) (16+) | |
2816.6 9 | (19-) | ||||||
3238.3 11 | (21-) | 421.7 5 | 100.0 | E2 | 2816.6 | (19-) | |
3684.3 12 | (23-) | 446.0 5 | 100.0 | E2 | 3238.3 | (21-) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
49.55 | 2+ | 0.37 ns 3 | 49.55 6 | E2 | 326 | B(E2)(W.u.)=183 16, α=326 |
336.45 | 6+ | 173.4 2 | E2 | 1.149 | α=1.149 | |
564.7 | 8+ | 228.3 2 | E2 | 0.419 | α=0.419 | |
842.5 | 10+ | 277.8 2 | E2 | 0.217 | α=0.217 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 24.10 d 3 % β- = 100 | α decay was not observed: %α<1×10-4 (1955De47). E(level): α decay was not observed: %α<1×10-4 (1955De47). GS band. |
49.55 | 2+ | 0.37 ns 3 | E(level): GS band. |
163.05 | 4+ | E(level): GS band. | |
336.45 | 6+ | E(level): GS band. | |
564.7 | 8+ | E(level): GS band. | |
810 | (0+) | Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands. | |
842.5 | 10+ | E(level): GS band. | |
995.0 | (7-) | E(level): octupole band. | |
1150 | (0+) | Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands. | |
1164.9 | (12+) | E(level): GS band. | |
1194.8 | (9-) | E(level): octupole band. | |
1441.9 | (11-) | E(level): octupole band. | |
1470 | (0+) | Jπ(level): From (d,6Li) reaction data, based on systematics of 0+ states, and on angular distributions for transitions to the unresolved 0+, 2+ states within the bands. | |
1526.6 | (14+) | E(level): GS band. | |
1731.0 | (13-) | E(level): octupole band. | |
1923.4 | (16+) | E(level): GS band. | |
2059.2 | (15-) | E(level): octupole band. | |
2351.0 | (18+) | E(level): GS band. | |
2422.9 | (17-) | E(level): octupole band. | |
2805.1 | (20+) | E(level): GS band. | |
2816.6 | (19-) | E(level): octupole band. | |
3238.3 | (21-) | E(level): octupole band. | |
3281.4 | (22+) | E(level): GS band. | |
3684.3 | (23-) | E(level): octupole band. | |
3775.1 | (24+) | E(level): GS band. |
Theory/Calculations:
2006De05: Systematics of α decay to rotational states
2005La04: Binding energies, radii rel mean-field interaction
2005Po01,2004Mo06,2003Po15,1995Ba47: Fission phenomena
For calculated and deduced fission-barrier parameters, see 1971Pa31, 1974Ba28, 1976Sh22, 1978Ma48, 1978Pr05 and 1980Ku14, for example.
2003Bu11,2003Bu27: Band comparisons
2002Gi11: Super-deformed states
2000Bu02,200bu32,1998Bu18,1983Ia01: Cluster models
1992So10: Intrinsic structures and rotational bands
1988Bh04: g.s. bands, anharmonic vibrator model
1988Ri07,1986Da03: interacting boson model.
1988Bh04: B(E2) value for deexcitation of the 2+ state was calculated using an anharmonic vibrational description of the nuclear collective motion.
1987Be43: α decay
1986Da03: The (p,t) cross section for population of excited 0+ state relative to that for population of g.s. was calculated by utilizing an interacting boson model of α-like clustering in nuclei. The g.s. band level energies and the B(E2) value for excitation of the 2+ state of g.s. band were calculated
1972Va20: calculations of low-lying 0+ states, and (p,t) strengths for their populations.
1970Ga12, 1983Ro14: Calculated quadrupole and hexadecapole moments corresponding to equilibrium deformations.
1970Ne08: Energies of octupole-vibrational bands and B(E3) values for excitation of 3- states were calculated by using a modified octupole-octupole force and by including the Coriolis interaction between the states of the intrinsic octupole quadruplet (Kπ=0-,1-,2-,3-).
γ-vibrational state energy and B(E2) value for excitation of 2+ state were calculated by 1965Be40 within the framework of the Nilsson single-particle model, the quasiparticle and quasiboson approximations.
1967So04, 1970Ga12, 1982Le19, 1982Du16, 1983Ro14: calculations of equilibrium deformation parameters
1965So04: Quadrupole (Kπ=0+,2+) and octupole (Kπ=0-,1-,2-) collective bandheads were calculated by using the superfluid nuclear model.
Q-value: Note: Current evaluation has used the following Q record 273 3 6190 3 8170 syst 3672 13 2003Au03