ADOPTED LEVELS, GAMMAS for 167Ho
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 191, 1 (2023) | Cutoff date: 22-Aug-2023
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=1010 keV 5 | S(n)= 7280 keV 5 | S(p)= 6984 keV 5 | Q(α)= -109 keV 7 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 167Dy β- decay (6.20 M) | B | 164Dy(α,pγ) |
| C | 166Ho(n,γ),(n,n):Resonances | D | 168Er(pol t,α) |
| E | 170Er(p,α) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | A DE | 7/2- | 2.98 h 3 % β- = 100 | |||||
| 100 4 | DE | 9/2- | ||||||
| 221 4 | DE | 11/2- | ||||||
| 259.34 11 | A DE | 3/2+ | 6.0 µs 10 % IT = 100 | 259.33 13 | 100 | M2 | 0.0 | 7/2- |
| 319.75 12 | A DE | 5/2+ | 60.44 8 | 100 | M1(+E2) | 259.34 | 3/2+ | |
| 392.48 13 | A | (1/2+) | 72.67 10 ? 133.19 7 | ≈4.6 100 8 | [E2] [M1+E2] | 319.75 259.34 | 5/2+ 3/2+ | |
| 409.97 12 | A DE | 3/2+ | 90.26 8 150.58 8 | 64 9 100 14 | [M1+E2] [M1+E2] | 319.75 259.34 | 5/2+ 3/2+ | |
| 507 4 | DE | (9/2+) | ||||||
| 541 4 | DE | (7/2+) | ||||||
| 569.69 12 | A | (3/2-) | 159.71 8 250.03 13 310.26 12 569.7 2 | ≈1.0 19.9 11 52.0 30 100.0 | [E1] [E1] [E1] [E2] | 409.97 319.75 259.34 0.0 | 3/2+ 5/2+ 3/2+ 7/2- | |
| 702 4 | D | |||||||
| 804 4 | D | |||||||
| 922.0 2 ? | A | 352.2 2 662.9 3 ? | 100 10 33 4 | 569.69 259.34 | (3/2-) 3/2+ | |||
| 974 4 | D | 7/2+ | ||||||
| 1006 4 | D | (9/2-) | ||||||
| 1092 4 | D | (7/2+) | ||||||
| 1099.5 2 | A | 689.4 3 ? 707.1 2 | ≈25 100 20 | 409.97 392.48 | 3/2+ (1/2+) | |||
| 1149.0 3 | A | 579.4 3 738.8 4 | 39 7 100 25 | 569.69 409.97 | (3/2-) 3/2+ | |||
| 1165 4 | D | 7/2+ | ||||||
| 1168.8 2 ? | A | 599.2 2 909.1 5 ? | 100 12 ≈47 | 569.69 259.34 | (3/2-) 3/2+ | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1240.6 4 | A | 830.8 5 848.3 10 920.5 5 ? 981.4 8 | ≈70 ≈100 ≈50 ≈50 | 409.97 392.48 319.75 259.34 | 3/2+ (1/2+) 5/2+ 3/2+ | |||
| 1275 4 | D | (9/2+) | ||||||
| 1403 4 | D | (5/2+) | ||||||
| 1464 4 | D | 7/2- | ||||||
| 1664.9 4 | A | 1094.6 6 1272.9 6 1405.6 5 | 77 31 100 12 74 11 | 569.69 392.48 259.34 | (3/2-) (1/2+) 3/2+ | |||
| 1666 4 | D | 11/2- | ||||||
| 1707 4 | D | |||||||
| 1775 4 | D | |||||||
| 1858 4 | D | (1/2+) | ||||||
| 1919.0 3 ? | A | 997.0 2 ? | 100 | 922.0 | ||||
| 1938 4 | D | 5/2+ | ||||||
E(level): From 167Dy β- decay for levels decaying by γ rays, and from (pol t,α) for levels populated only in transfer reactions
Jπ(level): From Nilsson-model interpretation (including pairing and Coriolis-coupling effects) of angular-distribution and analyzing-power data in 168Er(pol t,α) (1979Lo02), except where noted.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - π7/2[523] band. | |||||||
| 0.0 | 7/2- | 2.98 h 3 % β- = 100 | |||||
| 100 4 | 9/2- | ||||||
| 221 4 | 11/2- | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - π3/2[411] band. | |||||||
| 259.34 11 | 3/2+ | 6.0 µs 10 % IT = 100 | |||||
| 319.75 12 | 5/2+ | ||||||
| 507 4 | (9/2+) | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 3 - π1/2[411] band. | |||||||
| 392.48 13 | (1/2+) | ||||||
| 409.97 12 | 3/2+ | ||||||
| 541 4 | (7/2+) | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 4 - π7/2[404]. | |||||||
| 974 4 | 7/2+ | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 5 - π1/2[541]. | |||||||
| 1006 4 | (9/2-) | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 6 - π5/2[402]. | |||||||
| 1403 4 | (5/2+) | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 7 - π5/2[413] band | |||||||
| 1165 4 | 7/2+ | ||||||
| 1275 4 | (9/2+) | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 8 - π5/2[532] band | |||||||
| 1464 4 | 7/2- | ||||||
| 1666 4 | 11/2- | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 9 - π1/2[420] band | |||||||
| 1858 4 | (1/2+) | ||||||
| 1938 4 | 5/2+ | ||||||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
| 259.34 | 3/2+ | 6.0 µs 10 % IT = 100 | 259.33 13 | M2 | 0.827 | B(M2)(W.u.)=0.080 14, α=0.827 12, α(K)=0.661 9, α(L)=0.1286 18, α(M)=0.0294 4, α(N)=0.00685 10, α(O)=0.000980 14, α(P)=5.11×10-5 7 | |
| 319.75 | 5/2+ | 60.44 8 | M1(+E2) | 1.25 LE | 14.1 | α=14.1 30, α(K)=7.2 22, α(L)=5 4, α(M)=1.3 10, α(N)=0.29 21, α(O)=0.035 24, α(P)=4.5×10-4 14 | |
| 392.48 | (1/2+) | 72.67 10 | [E2] | 9.73 | α=9.73 15, α(K)=2.061 29, α(L)=5.89 9, α(M)=1.425 22, α(N)=0.321 5, α(O)=0.0376 6, α(P)=9.32×10-5 13 | ||
| (1/2+) | 133.19 7 | [M1+E2] | 1.07 | α=1.07 8, α(K)=0.74 23, α(L)=0.25 11, α(M)=0.059 28, α(N)=0.013 6, α(O)=0.0017 7, α(P)=4.1×10-5 19 | |||
| 409.97 | 3/2+ | 90.26 8 | [M1+E2] | 3.83 | α=3.83 33, α(K)=2.2 8, α(L)=1.3 8, α(M)=0.30 21, α(N)=0.07 5, α(O)=0.008 5, α(P)=1.2×10-4 6 | ||
| 3/2+ | 150.58 8 | [M1+E2] | 0.73 | α=0.73 9, α(K)=0.53 16, α(L)=0.16 6, α(M)=0.037 14, α(N)=0.0083 31, α(O)=0.00108 32, α(P)=2.9×10-5 13 | |||
| 569.69 | (3/2-) | 159.71 8 | [E1] | 0.0910 | α=0.0910 13, α(K)=0.0764 11, α(L)=0.01141 16, α(M)=0.002509 35, α(N)=0.000575 8, α(O)=7.96×10-5 11, α(P)=3.72E-6 5 | ||
| (3/2-) | 250.03 13 | [E1] | 0.0282 | α=0.0282 4, α(K)=0.02385 34, α(L)=0.00344 5, α(M)=0.000756 11, α(N)=0.0001740 24, α(O)=2.449×10-5 34, α(P)=1.223E-6 17 | |||
| (3/2-) | 310.26 12 | [E1] | 0.01643 | α=0.01643 23, α(K)=0.01390 20, α(L)=0.001981 28, α(M)=0.000435 6, α(N)=0.0001001 14, α(O)=1.419×10-5 20, α(P)=7.27E-7 10 | |||
| (3/2-) | 569.7 2 | [E2] | 0.01135 | α=0.01135 16 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 7/2- | 2.98 h 3 % β- = 100 | E(level): π7/2[523] band. |
| 100 | 9/2- | E(level): π7/2[523] band. | |
| 221 | 11/2- | E(level): π7/2[523] band. | |
| 259.34 | 3/2+ | 6.0 µs 10 % IT = 100 | E(level): π3/2[411] band. |
| 319.75 | 5/2+ | E(level): π3/2[411] band. | |
| 392.48 | (1/2+) | E(level): π1/2[411] band. | |
| 409.97 | 3/2+ | XREF: E(403). E(level): π1/2[411] band. | |
| 507 | (9/2+) | E(level): π3/2[411] band. Jπ(level): Assignment by 1979Lo02 considered tentative because of poor fit to Ay(θ) for a weakly populated level. | |
| 541 | (7/2+) | E(level): π1/2[411] band. Jπ(level): Assignment by 1979Lo02 considered tentative because of poor fit to Ay(θ) for a weakly populated level. | |
| 974 | 7/2+ | E(level): π7/2[404]. | |
| 1006 | (9/2-) | E(level): π1/2[541]. Jπ(level): Possible assignment to a band (1979Lo02) of weak population and poor fit to Ay(θ) in (pol t,α). | |
| 1092 | (7/2+) | Jπ(level): Assignment by 1979Lo02 considered tentative because of poor fit to Ay(θ) for a weakly populated level. Possible assignment to a band (1979Lo02) of weak population and poor fit to Ay(θ) in (pol t,α). | |
| 1165 | 7/2+ | E(level): π5/2[413] band. | |
| 1275 | (9/2+) | E(level): π5/2[413] band. Jπ(level): Assignment by 1979Lo02 considered tentative because of poor fit to Ay(θ) for a weakly populated level. | |
| 1403 | (5/2+) | E(level): π5/2[402]. Jπ(level): Assignment by 1979Lo02 considered tentative because of poor fit to Ay(θ) for a weakly populated level. Possible assignment to a band (1979Lo02) of weak population and poor fit to Ay(θ) in (pol t,α). | |
| 1464 | 7/2- | E(level): π5/2[532] band. | |
| 1666 | 11/2- | E(level): π5/2[532] band. | |
| 1858 | (1/2+) | E(level): π1/2[420] band. Jπ(level): Possible assignment to a band (1979Lo02) of weak population and poor fit to Ay(θ) in (pol t,α). | |
| 1938 | 5/2+ | E(level): π1/2[420] band. |
1955Ha45: 167Ho produced and identified in 170Er(p,α),E(p)=22.4 MeV, and 167Er(n,p) reactions using natural erbium target, followed by ion-exchange method at the ORNL cyclotron facility. Measured half-life of the decay of 167Ho, β and γ radiations. Deduced β-end-point energies of 1.0 MeV 1 and 0.28 MeV. Gamma rays of 0.35 and 0.70 MeV were observed
1960Wi10: 167Ho produced in 167Er(n,p),E(n)=14 MeV, followed by chemical separation at the University of Arkansas Cockcroft-Walton 400-kV accelerator. Measured half-life of the decay of 167Ho
Theoretical structure calculations:
2017Ta12: calculated ground-state band, moments of inertia and gyromagnetic ratios, B(M1), magnetic moments, deformations using quasiparticle phonon nuclear model (QPNM).
1970Ri02: calculated levels, Jπ using Hartree-Fock-Bogolyubov theory.
Other theory references for structure: nine references retrieved from from the NSR database listed in this dataset as ’document’ records.
Levels: Three neutron resonances at 0.27 eV, 8.5 eV and 57.4 eV, each with Jπ=13/2-,15/2- are known from 2018MuZZ evaluation. See 166Ho(n,γ),(n,n):resonances dataset for details.
Levels: α brief dataset is included for continuum γ-ray spectroscopy from 164Dy(α,pγ) reaction studied by 2023Po08 for determination of nuclear level density (NLD) and γ-strength function (GSF).
Q-value: S(2n)=13524 5, S(2p)=16269 5 (2021Wa16)