ADOPTED LEVELS, GAMMAS for 106Nb
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 20-JUL-2015
Authors: D. De Frenne and A. Negret | Citation: Nucl. Data Sheets 109, 943 (2008) | Cutoff date: 1-May-2007
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=9941 keV 10 | S(n)= 4359 keV 6 | S(p)= 12018 keV 13 | Q(α)= -7451 keV 6 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 106Zr β- decay (180 MS) | B | 106Nb IT decay (0.82 μs) |
| C | 252Cf SF decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC | (1-) | 1.02 s 5 % β- = 100 % β-n = 4.5 3 | |||||
| 107.9 2 | BC | (1+) | 108.1 3 | 100 | [E1] | 0.0 | (1-) | |
| 202.2 1 | BC | (2+) | 94.5 3 202.2 1 | 100 28 99 28 | [M1+E2] [E1] | 107.9 0.0 | (1+) (1-) | |
| 204.8 1 | BC | (3+) | 0.82 µs 6 % IT = 100 | 204.8 1 | 100 | [M2] | 0.0 | (1-) |
| 337.6 2 | C | (2-) | 132.8 1 | 100 | 204.8 | (3+) | ||
| 470.6 2 | C | (2-) | 133.0 1 | 100 | 337.6 | (2-) | ||
| 627.3 2 | C | (3-) | 156.7 1 289.7 3 | 100 3 21.1 23 | 470.6 337.6 | (2-) (2-) | ||
| 815.2 2 | C | (4-) | 188.0 2 344.6 2 | 100 5 76 4 | 627.3 470.6 | (3-) (2-) | ||
| 995.0 4 | C | 524.4 3 | 100 | 470.6 | (2-) | |||
| 1039.9 3 | C | (5-) | 224.7 2 412.6 2 | 100 5 82 4 | 815.2 627.3 | (4-) (3-) | ||
| 1274.4 3 | C | (6-) | 234.5 3 459.2 2 | 38 4 100 5 | 1039.9 815.2 | (5-) (4-) | ||
| 1589.2 4 | C | (7-) | 314.7 3 549.3 3 | 43 4 100 9 | 1274.4 1039.9 | (6-) (5-) | ||
| 1838.8 4 | C | (8-) | 249.7 3 ? 564.4 3 | 100 11 | 1589.2 1274.4 | (7-) (6-) | ||
E(level): From least-squares fit to Eγ data
Jπ(level): The assignments are proposed by 2014Lu07, based on possible 2-qp states from potential-energy surface (PES) and projected shell model (PSM) calculations
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - π1/2[431]~#ν5/2[532],Kπ=2-,α=0. | |||||||
| 0.0 | (1-) | 1.02 s 5 % β- = 100 % β-n = 4.5 3 | |||||
| 470.6 2 | (2-) | 133.0 1 | 100 | 337.6 | (2-) | ||
| 815.2 2 | (4-) | 188.0 2 344.6 2 | 100 5 76 4 | 627.3 470.6 | (3-) (2-) | ||
| 1274.4 3 | (6-) | 234.5 3 459.2 2 | 38 4 100 5 | 1039.9 815.2 | (5-) (4-) | ||
| 1838.8 4 | (8-) | 249.7 3 ? 564.4 3 | 100 11 | 1589.2 1274.4 | (7-) (6-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - π1/2[431]~#ν5/2[532],Kπ=2-,α=1 | |||||||
| 627.3 2 | (3-) | ||||||
| 1039.9 3 | (5-) | 224.7 2 412.6 2 | 100 5 82 4 | 815.2 627.3 | (4-) (3-) | ||
| 1589.2 4 | (7-) | 314.7 3 549.3 3 | 43 4 100 9 | 1274.4 1039.9 | (6-) (5-) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 107.9 | (1+) | 108.1 3 | [E1] | 0.0954 | α=0.0954 16 | |
| 202.2 | (2+) | 94.5 3 | [M1+E2] | 0.8 | α=0.8 6 | |
| (2+) | 202.2 1 | [E1] | 0.0155 | α=0.0155 | ||
| 204.8 | (3+) | 0.82 µs 6 % IT = 100 | 204.8 1 | [M2] | 0.189 | B(M2)(W.u.)=3.9 3, α=0.189 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (1-) | 1.02 s 5 % β- = 100 % β-n = 4.5 3 | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=0. |
| 204.8 | (3+) | 0.82 µs 6 % IT = 100 | Decay mode: only the isomeric transitions have been seen. |
| 470.6 | (2-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=0. | |
| 627.3 | (3-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=1. | |
| 815.2 | (4-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=0. | |
| 1039.9 | (5-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=1. | |
| 1274.4 | (6-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=0. | |
| 1589.2 | (7-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=1. | |
| 1838.8 | (8-) | E(level): π1/2[431]~#ν5/2[532],Kπ=2-,α=0. |
| E(level) | E(gamma) | Comments |
| 107.9 | 108.1 | I(γ): From 106Nb IT decay |
| 202.2 | 94.5 | I(γ): no intensity given in 252Cf SF decay. From 106Nb IT decay | 202.2 | I(γ): From 106Nb IT decay |
1969WiZX: 106Nb produced in 252Cf SF decay, measured T1/2
1976Ah06: 106Nb produced in 239Pu fission fragments and charge determined from on-line niobium chemistry, measured half-life from 172γ decay curve
2009Pe06: 106Nb formed by fragmentation of 136Xe beam at 120 MeV/nucleon at NSCL facility using Coupled Cyclotrons and A1900 fragment separator. The time-of-flight and transversal positions of each particle was measured using two plastic scintillators. The ΔE energy loss in a Si PIN detector was measured which, when combined with time-of-flight (tof) and transversal position measurements, allowed for an event-by-event identification of the transmitted nuclei. Transmitted nuclei and their β decays were measured using the β counting system consisting of four Si PIN detectors and a double-sided Si strip detector. β-delayed neutrons were measured in coincidence with β-decay precursor using neutron emission ratio observer (NERO) detector consisting of 60 proportional gas counter tubes embedded in polyethylene moderator matrix. The γ rays were measured with SeGA Ge detectors. Measured isotopic half-lives and delayed neutron emission probabilities Isotopic half-life was measured by 2009Pe06 from least-squares fit and maximum likelihood method of time differences of implantations and correlated β decay events.
No information is available for levels populated in 106Nb from the β- decay of 180-ms 106Zr
Q-value: Q(β-n)=3072 10, S(2n)=10517 5, S(2p)=267110 400 (syst) (2012Wa38)