ADOPTED LEVELS, GAMMAS for 97Nb
Author: N. Nica | Citation: Nucl. Data Sheets 111, 525 (2010) | Cutoff date: 19-Nov-2009
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=1935.5 keV 18 | S(n)= 8073 keV 4 | S(p)= 7452.5 keV 18 | Q(α)= -3805 keV 11 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 97Zr β- decay | B | 97Nb IT decay (58.7 S) |
| C | 96Zr(3He,d),(d,n) | D | 96Zr(3He,d) IAS |
| E | 98Mo(d,3He) | F | 98Mo(pol t,α) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC EF | 9/2+ | 72.1 m 7 % β- = 100 | |||||
| 743.35 3 | ABC EF | 1/2- | 58.7 s 18 % IT = 100 | 743.36 3 | 100 | [M4] | 0.0 | 9/2+ |
| 1147.96 6 | A | 7/2+ | ≤ 0.15 ns | 1147.97 8 | 100 | M1+E2 | 0.0 | 9/2+ |
| 1160 10 | F | 9/2+ | ||||||
| 1251.01 7 | A C EF | 3/2- | 507.64 8 | 100 | 743.35 | 1/2- | ||
| 1276.09 7 | A C | 5/2+ | 1276.07 9 | 100 | [E2] | 0.0 | 9/2+ | |
| 1433.92 13 | A C EF | 5/2- | 182.9 5 690.52 16 | 17 4 100 10 | [E2] | 1251.01 743.35 | 3/2- 1/2- | |
| 1548.36 11 | A | (3/2+,5/2-) | 272.40 16 297.2 3 400.42 16 | 95 11 27 5 100 6 | 1276.09 1251.01 1147.96 | 5/2+ 3/2- 7/2+ | ||
| 1554 15 | C | 1/2-,3/2- | ||||||
| 1652.82 21 | A | 218.9 2 | 100 | 1433.92 | 5/2- | |||
| 1750.43 9 | A C E | 5/2+ | ≤ 0.2 ns | 202.5 6 473.5 6 602.37 14 1750.24 22 | 2.1 6 5.4 27 100 5 79 7 | D,E2 D,E2 M1+E2 [E2] | 1548.36 1276.09 1147.96 0.0 | (3/2+,5/2-) 5/2+ 7/2+ 9/2+ |
| 1764.42 14 | A C EF | (3/2-) | 111.6 3 330.43 19 513.41 18 1021.2 3 | 6.4 9 14.1 15 54 5 100 16 | 1652.82 1433.92 1251.01 743.35 | 5/2- 3/2- 1/2- | ||
| 1851.71 6 | A C | 5/2+ | ≤ 0.2 ns | 305.1 9 600.6 6 703.76 5 1851.61 9 | 3 2 <18 100 5 30 3 | D,E2 [E1] M1+E2 [E2] | 1548.36 1251.01 1147.96 0.0 | (3/2+,5/2-) 3/2- 7/2+ 9/2+ |
| 1945 15 | C | 7/2+,9/2+ | ||||||
| 1958.4 6 | A | 707.4 6 | 100 | 1251.01 | 3/2- | |||
| 2047 10 | C F | (3/2-) | ||||||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2092 15 | C E | 3/2+,5/2+ | ||||||
| 2105.91 6 | A C E | (3/2+) | ≤ 0.2 ns | 254.17 14 355.40 9 558 1 829.79 9 854.89 8 1362.68 9 | 55 4 100 4 1.3 9 11.4 8 17.0 11 49 5 | M1+E2 M1+E2 (E1) [E1] | 1851.71 1750.43 1548.36 1276.09 1251.01 743.35 | 5/2+ 5/2+ (3/2+,5/2-) 5/2+ 3/2- 1/2- |
| 2113 10 | C EF | 5/2- | ||||||
| 2247.46 15 | A EF | 3/2- | 699.2 3 971.34 15 | 36 7 100 6 | [E1] | 1548.36 1276.09 | (3/2+,5/2-) 5/2+ | |
| 2357 15 | C | (1/2+) | ||||||
| 2388 10 | EF | (3/2-) | ||||||
| 2525 15 | C | 3/2+,5/2+ | ||||||
| 2541 10 | F | (5/2-) | ||||||
| 2550 20 | E | 1/2-,3/2- | ||||||
| 2654 10 | F | |||||||
| 2676 15 | C | 3/2+,5/2+ | ||||||
| 2702 15 | C | 3/2+,5/2+ | ||||||
| 2727 15 | C | 3/2+,5/2+ | ||||||
| 2748 15 | C | (3/2+,5/2+) | ||||||
| 2792 15 | C | (1/2+) | ||||||
| 2948 15 | EF | |||||||
| 2981 15 | C | (1/2+) | ||||||
| 3067 15 | C | (3/2+,5/2+) | ||||||
| 3212 15 | C | (3/2+,5/2+) | ||||||
| 3326 15 | C | (1/2-,3/2-) | ||||||
| 3362 15 | C | 3/2+,5/2+ | ||||||
| 3418 15 | C | 3/2+,5/2+ | ||||||
| 3486 15 | C | (3/2+,5/2+) | ||||||
| 3518 15 | C | 3/2+,5/2+ | ||||||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 3537 15 | C | (3/2+,5/2+) | ||||||
| 3586 15 | C | 3/2+,5/2+ | ||||||
| 3643 15 | C | 3/2+,5/2+ | ||||||
| 3759 15 | C | (5/2-,7/2-) | ||||||
| 3799 15 | C | (3/2+,5/2+) | ||||||
| 3862 15 | C | 3/2+,5/2+ | ||||||
| 3945 15 | C | 3/2+,5/2+ | ||||||
| 4038 15 | C | 3/2+,5/2+ | ||||||
| 4080 20 | C | |||||||
| 4200 20 | C | |||||||
| 4350 20 | C | |||||||
| 4530 20 | C | |||||||
| 4660 20 | C | |||||||
| 4780 20 | C | |||||||
| 4880 20 | C | |||||||
| 4960 20 | C | |||||||
| 5220 20 | C | |||||||
| 5330 20 | C | |||||||
| 5460 20 | C | |||||||
| 5630 20 | C | |||||||
| 14430 30 | D | (3/2+) | ||||||
| 14650 30 | D | (7/2+) | ||||||
| 15640 30 | D | (11/2-) | ||||||
E(level): From least squares fit to Eγ in 97Zr β- decay, where possible. Otherwise, from the reactions indicated in XREF column.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
| 743.35 | 1/2- | 58.7 s 18 % IT = 100 | 743.36 3 | [M4] | 0.0210 | B(M4)(W.u.)=6.03 21, α=0.0210, α(K)=0.0181 3, α(L)=0.00237 4, α(M)=0.000423 6, α(N)=6.14×10-5 9, α(O)=3.32E-6 5, α(N+)=6.47E-5 9 | |
| 1147.96 | 7/2+ | ≤ 0.15 ns | 1147.97 8 | M1+E2 | +0.5 2 | 5.47×10-4 | B(E2)(W.u.)>0.0051, B(M1)(W.u.)>6.5E-5, α=5.47E-4, α(K)=0.000481 8, α(L)=5.31E-5 8, α(M)=9.34E-6 14, α(N)=1.371E-6 20, α(O)=8.05E-8 13, α(N+)=3.56E-6 9 |
| 1276.09 | 5/2+ | 1276.07 9 | [E2] | 4.43×10-4 | α=4.43×10-4, α(K)=0.000372 6, α(L)=4.13E-5 6, α(M)=7.26E-6 11, α(N)=1.064E-6 15, α(O)=6.17E-8 9, α(N+)=2.25E-5 4 | ||
| 1433.92 | 5/2- | 690.52 16 | [E2] | 0.00180 | α=0.00180, α(K)=0.001579 23, α(L)=0.000182 3, α(M)=3.20×10-5 5, α(N)=4.65E-6 7, α(O)=2.59E-7 4, α(N+)=4.91E-6 7 | ||
| 1750.43 | 5/2+ | ≤ 0.2 ns | 602.37 14 | M1+E2 | +0.11 6 | 0.00228 | B(M1)(W.u.)>0.00026, α=0.00228, α(K)=0.00201 3, α(L)=0.000225 4, α(M)=3.96×10-5 6, α(N)=5.80E-6 9, α(O)=3.39E-7 5, α(N+)=6.14E-6 9 |
| 5/2+ | ≤ 0.2 ns | 1750.24 22 | [E2] | 4.13×10-4 | B(E2)(W.u.)>0.0028, α=4.13E-4, α(K)=0.000198 3, α(L)=2.18E-5 3, α(M)=3.83E-6 6, α(N)=5.61E-7 8, α(O)=3.29E-8 5, α(N+)=0.000190 3 | ||
| 1851.71 | 5/2+ | ≤ 0.2 ns | 600.6 6 | [E1] | 9.01×10-4 | B(E1)(W.u.)>4.7E-7, α=9.01E-4, α(K)=0.000795 12, α(L)=8.79E-5 13, α(M)=1.543E-5 22, α(N)=2.26E-6 4, α(O)=1.300E-7 19, α(N+)=2.39E-6 4 | |
| 5/2+ | ≤ 0.2 ns | 703.76 5 | M1+E2 | +0.19 8 | 1.60×10-3 | B(E2)(W.u.)>0.0028, B(M1)(W.u.)>0.00021, α=1.60E-3, α(K)=0.001410 20, α(L)=0.0001572 23, α(M)=2.77E-5 4, α(N)=4.06E-6 6, α(O)=2.37E-7 4, α(N+)=4.30E-6 7 | |
| 5/2+ | ≤ 0.2 ns | 1851.61 9 | [E2] | 4.37×10-4 | B(E2)(W.u.)>0.0010, α=4.37E-4, α(K)=0.0001783 25, α(L)=1.95E-5 3, α(M)=3.43E-6 5, α(N)=5.04E-7 7, α(O)=2.96E-8 5, α(N+)=0.000236 4 | ||
| 2105.91 | (3/2+) | ≤ 0.2 ns | 254.17 14 | M1+E2 | 0.030 | α=0.030 11, α(K)=0.026 10, α(L)=0.0032 14, α(M)=0.00057 24, α(N)=8.E-5 4, α(O)=4.1E-6 14, α(N+)=9.E-5 4 | |
| (3/2+) | ≤ 0.2 ns | 355.40 9 | M1+E2 | 0.011 | α=0.011 3, α(K)=0.0092 22, α(L)=0.0011 3, α(M)=0.00019 6, α(N)=2.8×10-5 8, α(O)=1.5E-6 3, α(N+)=2.9E-5 8 | ||
| (3/2+) | ≤ 0.2 ns | 854.89 8 | (E1) | 4.21×10-4 | B(E1)(W.u.)>1.8E-7, α=4.21E-4, α(K)=0.000372 6, α(L)=4.08E-5 6, α(M)=7.17E-6 10, α(N)=1.050E-6 15, α(O)=6.11E-8 9, α(N+)=1.111E-6 16 | ||
| (3/2+) | ≤ 0.2 ns | 1362.68 9 | [E1] | 3.22×10-4 | B(E1)(W.u.)>1.3E-7, α=3.22E-4, α(K)=0.0001559 22, α(L)=1.698E-5 24, α(M)=2.98E-6 5, α(N)=4.37E-7 7, α(O)=2.57E-8 4, α(N+)=0.0001461 21 | ||
| 2247.46 | 3/2- | 971.34 15 | [E1] | 3.27×10-4 | α=3.27×10-4, α(K)=0.000289 4, α(L)=3.16E-5 5, α(M)=5.56E-6 8, α(N)=8.14E-7 12, α(O)=4.75E-8 7, α(N+)=8.62E-7 12 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 9/2+ | 72.1 m 7 % β- = 100 | μ=6.153 5 Oblate deformation deduced from μ (1991Be18). |
| 1147.96 | 7/2+ | ≤ 0.15 ns | E(level): It has been suggested that the 1147.96- and 1160-keV levels are one and the same level. However, the level seen in 97Zr β- decay cannot have a J>7/2 (nor J<7/2) unless there is something very seriously wrong with the proposed decay scheme. At the same time, σ(θ) and y in 98Mo(pol t,α) duplicate the data for 9/2+ g.s. indicating a 9/2+, not a 7/2+ level. T1/2(level): From γγ(t) in 97Zr β- decay. |
| 1160 | 9/2+ | E(level): It has been suggested that the 1147.96- and 1160-keV levels are one and the same level. However, the level seen in 97Zr β- decay cannot have a J>7/2 (nor J<7/2) unless there is something very seriously wrong with the proposed decay scheme. At the same time, σ(θ) and y in 98Mo(pol t,α) duplicate the data for 9/2+ g.s. indicating a 9/2+, not a 7/2+ level. | |
| 1750.43 | 5/2+ | ≤ 0.2 ns | XREF: C(1754). E(level): Level at 1764 in (d,3He) data set is a doublet with L=1 + L=2. T1/2(level): From γγ(t) in 97Zr β- decay. |
| 1764.42 | (3/2-) | XREF: C(1776)F(1761). E(level): Level at 1764 in (d,3He) data set is a doublet with L=1 + L=2. | |
| 1851.71 | 5/2+ | ≤ 0.2 ns | XREF: C(1856). T1/2(level): From γγ(t) in 97Zr β- decay. |
| 2092 | 3/2+,5/2+ | E(level): Level at 2090 in (d,3He) data set is a doublet with L=2 + L=3. | |
| 2105.91 | (3/2+) | ≤ 0.2 ns | XREF: C(2114). E(level): Level at 2090 in (d,3He) data set is a doublet with L=2 + L=3. T1/2(level): From γγ(t) in 97Zr β- decay. |
| 2113 | 5/2- | E(level): Level at 2090 in (d,3He) data set is a doublet with L=2 + L=3. | |
| 2948 | XREF: F(2961). |
| E(level) | E(gamma) | Comments |
| 1750.43 | 202.5 | M(γ): Deduced from RUL | 473.5 | M(γ): Deduced from RUL |
| 1851.71 | 305.1 | M(γ): Deduced from RUL |
| 2105.91 | 854.89 | M(γ): d,E2 deduced from RUL, level scheme limits mult to E1 |
2005Be17: cluster decay T1/2 lower limits
Gammas: All γ data are from 97Zr β- decay
Q-value: Note: Current evaluation has used the following Q record 1934.8 18 8073 4 7451.8 18 -3807 11 2003Au03