ADOPTED LEVELS, GAMMAS for 166Gd
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 25-JAN-2015
Author: Coral M. Baglin | Citation: Nucl. Data Sheets 109, 1103 (2008) | Cutoff date: 1-Mar-2008
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=3350 keV SY | S(n)= 6120 keV SY | S(p)= 11130 keV SY | Q(α)= -2430 keV SY | ||
Reference: 2012WA38 |
References: | |||
A | 166Eu β- decay (1.7 S) | B | 166Gd IT decay (950 NS) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | AB | 0+ | 4.8 s 10 % β- = 100 | |||||
70.0 10 | AB | (2+) | 70 1 | 100 | [E2] | 0.0 | 0+ | |
230.8 11 | AB | (4+) | 160.8 2 | 100 | (E2) | 70.0 | (2+) | |
479.6 11 | B | (6+) | 248.7 3 | 100 | (E2) | 230.8 | (4+) | |
1240.1 11 | B | (3+) | 1009.1 7 1169.9 3 | 41 12 100 21 | 230.8 70.0 | (4+) (2+) | ||
1318.9 11 | B | (4+) | 78 1 1088.1 3 1249.2 3 | 23 7 100 20 60 17 | (M1) | 1240.1 230.8 70.0 | (3+) (4+) (2+) | |
1350.1 11 | B | (4+) | 1119.3 3 1280.1 2 | 100 38 38 13 | 230.8 70.0 | (4+) (2+) | ||
1418.4 11 | B | (5+) | 99.8 3 178.3 2 938.6 4 1187.5 3 | 67 8 31 6 42 11 100 19 | (M1) [E2] | 1318.9 1240.1 479.6 230.8 | (4+) (3+) (6+) (4+) | |
1455.2 11 | B | (5+) | 37S 105.0 3 137 1 1224.3 3 | 58 33 100 17 42 25 83 33 | [M1] (M1(+E2)) (M1(+E2)) | 1418.4 1350.1 1318.9 230.8 | (5+) (4+) (4+) (4+) | |
1601.5 11 | B | (6-) | 950 ns 60 % IT = 100 | 146.3 2 183.1 2 | 66 5 100 | (E1) (E1) | 1455.2 1418.4 | (5+) (5+) |
E(level): From least-squares fit to Eγ data
Jπ(level): As proposed by 2014Pa55 based on systematics of even-even nuclides for low-lying levels and potential-energy surface calculations for higher levels above 1 MeV, supported by multipolarities obtained from intensity balances.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - The g.s. band. | |||||||
0.0 | 0+ | 4.8 s 10 % β- = 100 | |||||
70.0 10 | (2+) | 70 1 | 100 | [E2] | 0.0 | 0+ | |
230.8 11 | (4+) | 160.8 2 | 100 | (E2) | 70.0 | (2+) | |
479.6 11 | (6+) | 248.7 3 | 100 | (E2) | 230.8 | (4+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - γ-vibrational band. | |||||||
1240.1 11 | (3+) | ||||||
1318.9 11 | (4+) | 78 1 1088.1 3 1249.2 3 | 23 7 100 20 60 17 | (M1) | 1240.1 230.8 70.0 | (3+) (4+) (2+) | |
1418.4 11 | (5+) | 99.8 3 178.3 2 938.6 4 1187.5 3 | 67 8 31 6 42 11 100 19 | (M1) [E2] | 1318.9 1240.1 479.6 230.8 | (4+) (3+) (6+) (4+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - π3/2[411]~#π5/2[413],Kπ=(4+). | |||||||
1350.1 11 | (4+) | ||||||
1455.2 11 | (5+) | 37S 105.0 3 137 1 1224.3 3 | 58 33 100 17 42 25 83 33 | [M1] (M1(+E2)) (M1(+E2)) | 1418.4 1350.1 1318.9 230.8 | (5+) (4+) (4+) (4+) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
70.0 | (2+) | 70 1 | [E2] | 9.7 | α=9.7 6, α(K)=2.58 8, α(L)=5.5 4, α(M)=1.30 10, α(N)=0.290 21, α(O)=0.038 3, α(P)=0.000132 5 | |
230.8 | (4+) | 160.8 2 | (E2) | 0.465 | α=0.465, α(K)=0.299 5, α(L)=0.1289 20, α(M)=0.0300 5, α(N)=0.00672 10, α(O)=0.000907 14, α(P)=1.630×10-5 24 | |
479.6 | (6+) | 248.7 3 | (E2) | 0.1087 | α=0.1087, α(K)=0.0802 12, α(L)=0.0222 4, α(M)=0.00507 8, α(N)=0.001142 17, α(O)=0.0001597 24, α(P)=4.83×10-6 7 | |
1318.9 | (4+) | 78 1 | (M1) | 4.12 | α=4.12 17, α(K)=3.47 14, α(L)=0.50 2, α(M)=0.109 5, α(N)=0.025 1, α(O)=0.0039 2, α(P)=0.00026 1 | |
1418.4 | (5+) | 99.8 3 | (M1) | 2.02 | α=2.02 4, α(K)=1.71, α(L)=0.247 4, α(M)=0.0537 9, α(N)=0.01235 21, α(O)=0.00191 4, α(P)=12.8×10-5 2 | |
(5+) | 178.3 2 | [E2] | 0.327 | α=0.327, α(K)=0.219 4, α(L)=0.0836 13, α(M)=0.0194 3, α(N)=0.00435 7, α(O)=0.000591 9, α(P)=1.224×10-5 18 | ||
1455.2 | (5+) | 37 | [M1] | 5.7 | α=5.7 5, α(L)=4.49 7, α(M)=0.976 14, α(N)=0.225 4, α(O)=0.0347 5, α(P)=0.00230 4 | |
(5+) | 105.0 3 | (M1(+E2)) | 1.93 | α=1.93 18, α(K)=1.25 23, α(L)=0.5 4, α(M)=0.12 8, α(N)=0.027 17, α(O)=0.0037 21, α(P)=8.E-5 3 | ||
(5+) | 137 1 | (M1(+E2)) | 0.817 | α=0.817 23, α(K)=0.59 11, α(L)=0.18 8, α(M)=0.041 20, α(N)=0.009 5, α(O)=0.0013 5, α(P)=3.8×10-5 14 | ||
1601.5 | (6-) | 950 ns 60 % IT = 100 | 146.3 2 | (E1) | 0.1047 | B(E1)(W.u.)=2.8E-8 3, α=0.1047, α(K)=0.0884 13, α(L)=0.01281 19, α(M)=0.00277 4, α(N)=0.000629 10, α(O)=9.36E-5 14, α(P)=5.20E-6 8 |
(6-) | 950 ns 60 % IT = 100 | 183.1 2 | (E1) | 0.0574 | B(E1)(W.u.)=2.15E-8 16, α=0.0574, α(K)=0.0486 7, α(L)=0.00692 10, α(M)=0.001497 22, α(N)=0.000341 5, α(O)=5.11E-5 8, α(P)=2.94E-6 5 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 4.8 s 10 % β- = 100 | E(level): The g.s. band. |
70.0 | (2+) | E(level): The g.s. band. | |
230.8 | (4+) | E(level): The g.s. band. | |
479.6 | (6+) | E(level): The g.s. band. | |
1240.1 | (3+) | E(level): γ-vibrational band. | |
1318.9 | (4+) | E(level): γ-vibrational band. | |
1350.1 | (4+) | E(level): π3/2[411]~#π5/2[413],Kπ=(4+). | |
1418.4 | (5+) | E(level): γ-vibrational band. | |
1455.2 | (5+) | E(level): π3/2[411]~#π5/2[413],Kπ=(4+). | |
1601.5 | (6-) | 950 ns 60 % IT = 100 | Configuration=ν5/2[512]~#ν7/2[633], β2=0.291, β4=0.014, β6=-0.017. |
E(level) | E(gamma) | Comments |
2005Ic02: production and identification of 166Gd: 15.5 MeV proton-induced fission of 238U; JAERI-ISOL on-line mass separation of products; plastic scin and Ge detectors for x-ray and γ detection
2014Mu09: theoretical calculation of β-decay half-life, and Gamow-Teller strength functions
Q-value: Estimated uncertainties (2012Wa38): 600 for Q(β-), 670 for S(n), 680 for S(p), 630 for Q(α)
Q-value: S(2n)=10900 630, S(2p)=21010 670 (syst,2012Wa38)