ADOPTED LEVELS, GAMMAS for 89Nb
Author: Balraj Singh | Citation: Nucl. Data Sheets 114, 1 (2013) | Cutoff date: 20-Oct-2012
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-5610 keV 24 | S(n)= 1.252×104 keV 7 | S(p)= 4286 keV 25 | Q(α)= -5.21×103 keV 3 | ||
Reference: 2012WA38 |
References: | |||
A | 89Mo ε decay (2.11 M) | B | 58Ni(36Ar,5PG) |
C | 89Y(3He,3nγ) | D | 89Y(α,4nγ) |
E | 90Zr(3He,p3nγ) | F | 92Mo(p,α) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABCDEF | (9/2+) | 2.03 h 7 % ε = 100 | |||||
<35 | A F | (1/2)- | 66 m 2 % ε = 100 | |||||
658.6 2 | AB E | (7/2+) | 658.6 2 | 100 | D | 0.0 | (9/2+) | |
760 | F | |||||||
≈838? | A | 803.0 10 | 100 | 35 | (1/2)- | |||
844.0 10 | A F | (7/2,9/2,11/2) | 844.0 5 | 100 | 0.0 | (9/2+) | ||
1003.41 10 | BCDEF | (13/2+) | 1003.4 1 | 100 | Q | 0.0 | (9/2+) | |
1155.3 3 | A EF | (7/2,9/2,11/2) | 496.4 5 ? 1155.3 3 | 11.0 9 100 10 | 658.6 0.0 | (7/2+) (9/2+) | ||
1272.0 3 | A | (7/2,9/2,11/2) | 1272.0 3 | 100 | 0.0 | (9/2+) | ||
1550 | F | |||||||
1640.2 10 | A | (7/2,9/2,11/2) | 1640.2 10 | 100 | 0.0 | (9/2+) | ||
1694.0 4 ? | A F | 1035.4 3 ? | 100 | 658.6 | (7/2+) | |||
1789.6 11 ? | A F | 1131 1 ? | 100 | 658.6 | (7/2+) | |||
1935.29 14 | BCDE | (17/2+) | 931.88 9 | 100 | Q | 1003.41 | (13/2+) | |
2050 | F | |||||||
2136.4 2 | E | (15/2) | 1133.0 2 | 100 | D | 1003.41 | (13/2+) | |
2151.56 16 | BCDE | (17/2-) | 0.51 ns 5 | 216.2 1 | 100 | (E1) | 1935.29 | (17/2+) |
2191.5 2 | B | 1188.1 2 | 100 | 1003.41 | (13/2+) | |||
2192.92 16 | BCDE | (21/2+) | 13.8 ns 4 | 257.7 1 | 100 | E2 | 1935.29 | (17/2+) |
2221.0 10 | A F | (7/2,9/2,11/2) | 2221.0 10 | 100 | 0.0 | (9/2+) | ||
2420.0 10 | A | (7/2,9/2,11/2) | 2420.0 10 | 100 | 0.0 | (9/2+) | ||
2517.8 2 | BCDE | (21/2-) | 366.7 2 | 100 | (Q) | 2151.56 | (17/2-) | |
2522.98 18 | BCDE | (19/2+) | 330.1 1 | 100 | D | 2192.92 | (21/2+) | |
2728.1 3 | E | 792.8 2 | 100 | 1935.29 | (17/2+) | |||
2935.0 3 | E | 206.9 1 | 100 | 2728.1 | ||||
2955.70 18 | BCDE | (23/2+) | < 0.35 ps | 762.8 1 | 100 | (M1+E2) | 2192.92 | (21/2+) |
3135.2 2 | E | (19/2-) | 617.9 2 983.2 2 | 100 11 <280 | D | 2517.8 2151.56 | (21/2-) (17/2-) | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3141.94 17 | B DE | (21/2-) | < 10 ps | 619.0 1 949.0 2 990.3 1 | 17.3 24 1.4 5 100 11 | [E1] [E1] (E2) | 2522.98 2192.92 2151.56 | (19/2+) (21/2+) (17/2-) |
3402.99 19 | BCDE | (25/2+) | 3.5 ps 14 | 447.3 1 | 100 | (M1+E2) | 2955.70 | (23/2+) |
3805.68 18 | B DE | (25/2-) | 34.7 ps 14 | 402.7 1 663.7 1 850.1 2 | 74 8 100 12 5.6 9 | (E1) E2 [E1] | 3402.99 3141.94 2955.70 | (25/2+) (21/2-) (23/2+) |
4076.02 19 | B | (25/2+) | 1120.3 1 1883.1 2 | 52 8 100 8 | D+Q | 2955.70 2192.92 | (23/2+) (21/2+) | |
4553.6 2 | B DE | (27/2-) | < 0.7 ps | 747.9 1 | 100 | (M1+E2) | 3805.68 | (25/2-) |
4797.2 3 ? | B | 721.2 2 | 100 | 4076.02 | (25/2+) | |||
4808.7 2 | B D | (29/2-) | 2.70 ps 21 | 255.1 1 1003.0 1 | 100 17 75 17 | (M1+E2) [E2] | 4553.6 3805.68 | (27/2-) (25/2-) |
4908.5 3 ? | B | 354.8 2 | 100 | 4553.6 | (27/2-) | |||
5041.3 2 | B | (29/2+) | 0.76 ps 28 | 244.2 2 965.3 1 1638.3 2 | 10.5 9 26 5 100 10 | [E2] (E2) | 4797.2 4076.02 3402.99 | (25/2+) (25/2+) |
5324.1 2 | B | (31/2-) | 515.4 1 | 100 | D | 4808.7 | (29/2-) | |
5407.3 2 | B | 498.4 3 853.8 2 1601.6 2 | 33 5 54 5 100 13 | 4908.5 4553.6 3805.68 | (27/2-) (25/2-) | |||
5697.7 2 | B | (33/2-) | 373.6 1 | 100 | 5324.1 | (31/2-) | ||
5917.0 3 ? | B | 875.7 3 | 100 | 5041.3 | (29/2+) | |||
6100.2 2 | B | (33/2+) | 1.25 ps 14 | 183.2 3 402.5 2 1058.8 1 | 8.2 27 28 14 100 11 | [E1] (E2) | 5917.0 5697.7 5041.3 | (33/2-) (29/2+) |
6131.5 3 | B | 724.3 2 | 100 | 5407.3 | ||||
6451.8 3 ? | B | 320.3 1 | 100 | 6131.5 | ||||
6547.5 2 | B | 416.0 2 1223.2 2 1738.9 2 | 100 17 43 7 97 13 | 6131.5 5324.1 4808.7 | (31/2-) (29/2-) | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
6658.3 3 ? | B | 558.1 2 | 100 | 6100.2 | (33/2+) | |||
6949.6 4 | B | 497.8 2 | 100 | 6451.8 | ||||
7272.6 6 | B | 614.3 5 | 100 | 6658.3 |
E(level): From least-squares fit to Eγ data
Jπ(level): For levels populated in in-beam γ-ray studies, ascending spins are assumed as the excitation energy increases. Further, ΔJ=2 transitions are assumed as E2 and ΔJ=1 transitions, generally, as M1+E2
T1/2(level): From recoil-distance Doppler shift (RDDS) and differential decay curve method (DDCM) (1995Za11), unless otherwise stated
M(γ): Mult=Q is from ΔJ=2, further restricted to E2 for known lifetimes. Mult=d or D+Q (restricted to M1+E2 for significant admixture) from ΔJ=1, and mult=d (E1) from ΔJ=0
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
2151.56 | (17/2-) | 0.51 ns 5 | 216.2 1 | (E1) | 0.0129 | B(E1)(W.u.)=6.5E-5 7, α=0.0129 | |
2192.92 | (21/2+) | 13.8 ns 4 | 257.7 1 | E2 | 0.0386 | B(E2)(W.u.)=1.47 5, α=0.0386 | |
2955.70 | (23/2+) | < 0.35 ps | 762.8 1 | (M1+E2) | -0.03 2 | B(M1)(W.u.)>(0.14) | |
3141.94 | (21/2-) | < 10 ps | 619.0 1 | [E1] | B(E1)(W.u.)>2.1E-5 | ||
(21/2-) | < 10 ps | 949.0 2 | [E1] | B(E1)(W.u.)>4.7E-7 | |||
(21/2-) | < 10 ps | 990.3 1 | (E2) | B(E2)(W.u.)>2.1 | |||
3402.99 | (25/2+) | 3.5 ps 14 | 447.3 1 | (M1+E2) | -0.10 5 | B(E2)(W.u.)=(4 4), B(M1)(W.u.)=(0.07 3) | |
3805.68 | (25/2-) | 34.7 ps 14 | 402.7 1 | (E1) | B(E1)(W.u.)=6.2E-5 9 | ||
(25/2-) | 34.7 ps 14 | 663.7 1 | E2 | B(E2)(W.u.)=3.0 5 | |||
(25/2-) | 34.7 ps 14 | 850.1 2 | [E1] | B(E1)(W.u.)=5.0E-7 10 | |||
4076.02 | (25/2+) | 1120.3 1 | D+Q | -0.12 7 | |||
4553.6 | (27/2-) | < 0.7 ps | 747.9 1 | (M1+E2) | -0.09 6 | B(M1)(W.u.)>(0.074) | |
4808.7 | (29/2-) | 2.70 ps 21 | 255.1 1 | (M1+E2) | -0.09 4 | 0.0186 | B(E2)(W.u.)=(40 40), B(M1)(W.u.)=(0.28 7), α=0.0186 4 |
(29/2-) | 2.70 ps 21 | 1003.0 1 | [E2] | B(E2)(W.u.)=3.7 11 | |||
5041.3 | (29/2+) | 0.76 ps 28 | 965.3 1 | [E2] | B(E2)(W.u.)=7 3 | ||
(29/2+) | 0.76 ps 28 | 1638.3 2 | (E2) | B(E2)(W.u.)=2.0 8 | |||
6100.2 | (33/2+) | 1.25 ps 14 | 402.5 2 | [E1] | B(E1)(W.u.)=0.0009 5 | ||
(33/2+) | 1.25 ps 14 | 1058.8 1 | (E2) | B(E2)(W.u.)=10.6 22 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | (9/2+) | 2.03 h 7 % ε = 100 | μ=6.216 5 (1997Hi06,2011StZZ) Configuration=πg9/2 (1993Bo33). |
35 | (1/2)- | 66 m 2 % ε = 100 | %IT<0.002 if E(isomer)=35 keV and if 66-min state lies above the 2.0-h state. |
844.0 | (7/2,9/2,11/2) | Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). | |
1003.41 | (13/2+) | Configuration=πg9/2(νg9/2-2)2+. | |
1155.3 | (7/2,9/2,11/2) | Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). | |
1272.0 | (7/2,9/2,11/2) | Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). | |
1640.2 | (7/2,9/2,11/2) | Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). | |
2221.0 | (7/2,9/2,11/2) | XREF: F(2200). Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). | |
2420.0 | (7/2,9/2,11/2) | Jπ(level): Probable ε,β+ feeding (allowed or first forbidden) from (9/2+). |
E(level) | E(gamma) | Comments |
658.6 | 658.6 | E(γ): from (3He,p3nγ) (1982Di09) and 89Mo ε decay (1983OxZZ) |
1155.3 | 1155.3 | E(γ): from 89Mo ε decay |
2151.56 | 216.2 | M(γ): γ(θ) and ΔJπ |
3805.68 | 402.7 | I(γ): 118 13 in (α,4nγ) |
5041.3 | 244.2 | I(γ): in table III (1993Bo33), Iγ values of 244γ and 965γ are reversed: Iγ(244γ)=26 7, Iγ(965γ)=10 3 | 965.3 | I(γ): see comment for 244 γ |
Two activities in 89Nb isotope produced and identified by 1954Di16 in bombardment of Nb and Zr with protons, followed by half-life measurement. Later studies of 89Nb decay: 1955Ma13, 1964Bu11, 1966Hy02, 1966Ha45, 1969HaZP, 1971Ar16, 1974Vo08, 1997Hi06
Structure calculations: 2011Ro08, 1997He24, 1996Ru02, 1992Si15, 1985Am02
Levels: 1993Bo33 give detailed shell-model calculations for high-spin (J>13/2) levels
Q-value: Note: Current evaluation has used the following Q record -5635 27 12546 58 4310 27 -5233 33 2011AuZZ
Q-value: S(2n)=22918 28, S(2p)=12210 27 (2011AuZZ)
Q-value: Values in 2003Au03: Q(β-)=-5650 30, S(n)=12650 100, S(p)=4316 29 Q(α)=-5230 30, S(2n)=22610 70, S(2p)=12210 27