ADOPTED LEVELS, GAMMAS for 61Fe
Authors: Kazimierz Zuber, Balraj Singh | Citation: Nucl. Data Sheets 125, 1 (2015) | Cutoff date: 25-Jan-2015
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=3977.1 keV 28 | S(n)= 5579 keV 4 | S(p)= 13242 keV 3 | Q(α)= -8821 keV 3 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 61Mn β- decay (0.709 S) | B | 9Be(64Ni,xγ) |
| C | Coulomb Excitation | D | 64Ni(α,7Be) |
| E | 238U(64Ni,xγ) E=400 MeV | F | 238U(64Ni,xγ) E=430 MeV |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDEF | (3/2-) | 5.98 m 6 % β- = 100 | |||||
| 206.92 5 | ABC EF | (5/2-) | 206.9 1 | 100 | (M1+E2) | 0.0 | (3/2-) | |
| 391.30 6 | A | (1/2-) | 391.2 1 | 100 | 0.0 | (3/2-) | ||
| 629.09 7 | A F | (3/2-) | 237.8 1 422.2 1 629.0 1 | 4.61 6 4.55 8 100 | 391.30 206.92 0.0 | (1/2-) (5/2-) (3/2-) | ||
| 861.67 11 | AB EF | (9/2+) | 238 ns 5 % IT = 100 | 654.75 10 | 100 | (M2) | 206.92 | (5/2-) |
| 959.53 9 | A EF | (7/2-) | 752.6 1 959.4 2 | 100 3 23 6 | D | 206.92 0.0 | (5/2-) (3/2-) | |
| 1013.07 8 | A | (1/2-) | 806.6 3 1013.0 1 | 16 4 100 5 | 206.92 0.0 | (5/2-) (3/2-) | ||
| 1160.98 7 | A | (5/2-) | 201.6 5 531.5 3 954.1 1 1161.0 1 | 3.9 7 2.4 6 46.8 15 100.0 18 | 959.53 629.09 206.92 0.0 | (7/2-) (3/2-) (5/2-) (3/2-) | ||
| 1252.87 7 | A | (3/2-) | 624.0 5 861.5 1 1046.0 1 1252.9 1 | 17.1 18 10.9 11 100.0 20 81.5 22 | 629.09 391.30 206.92 0.0 | (3/2-) (1/2-) (5/2-) (3/2-) | ||
| 1262.47 8 | A | (3/2,5/2,7/2-) | 1055.3 1 1262.7 1 | 100 7 51 14 | 206.92 0.0 | (5/2-) (3/2-) | ||
| 1477.27 11 | A F | (9/2-) | 517.2 3 1270.4 1 | 17 6 100 21 | 959.53 206.92 | (7/2-) (5/2-) | ||
| 1650.12 17 | DEF | (13/2+) | 788.44 12 | 100 | Q | 861.67 | (9/2+) | |
| 1705.2 5 | A F | (1/2-,9/2-) | 1498.3 5 | 100 | 206.92 | (5/2-) | ||
| 1893.12 11 | A | (3/2,5/2-) | 640.5 3 1263.7 5 1501.7 1 1893.9 3 | 24 7 83 13 100 12 75 18 | 1252.87 629.09 391.30 0.0 | (3/2-) (3/2-) (1/2-) (3/2-) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1929.01 10 | A | (3/2,5/2-) | 1537.7 1 1722.1 2 1928.9 2 | 42 7 34 7 100 14 | 391.30 206.92 0.0 | (1/2-) (5/2-) (3/2-) | ||
| 2143.73 7 | A D F | (3/2-,5/2-) | 982.4 5 1130.6 1 1184.6 5 1936.8 1 2143.7 1 | 4.0 15 11.7 13 4.2 13 16.2 20 100.0 25 | 1160.98 1013.07 959.53 206.92 0.0 | (5/2-) (1/2-) (7/2-) (5/2-) (3/2-) | ||
| 2510.59 8 | A | (3/2-,5/2-) | 1258.5 5 1350.8 5 1498.3 5 2120.3 5 2303.5 1 2510.5 1 | 9 4 11 3 6.3 25 8.7 21 41 3 100 4 | 1252.87 1160.98 1013.07 391.30 206.92 0.0 | (3/2-) (5/2-) (1/2-) (1/2-) (5/2-) (3/2-) | ||
| 2716.98 15 | A | (5/2-,7/2) | 1239.7 1 | 100 | 1477.27 | (9/2-) | ||
| 2964.4 5 | A | (3/2,5/2,7/2) | 2757.4 5 | 100 | 206.92 | (5/2-) | ||
| 2992.4 5 | EF | (17/2+) | 1342.0 6 | 100 | Q | 1650.12 | (13/2+) | |
| 3049.2 3 | A | (5/2-,7/2) | 1571.9 3 2089.6 5 | 69 20 100 29 | 1477.27 959.53 | (9/2-) (7/2-) | ||
| 3079.99 22 | A | (3/2,5/2,7/2-) | 2873.7 3 3079.2 3 | 76 26 100 29 | 206.92 0.0 | (5/2-) (3/2-) | ||
| 3513.5 4 | A | (3/2,5/2-) | 3122.1 4 | 100 | 391.30 | (1/2-) | ||
| 3528.6 4 | F | (17/2+,15/2+) | 536.1 3 1878.6 4 | | 2992.4 1650.12 | (17/2+) (13/2+) | ||
| 3541.2 7 | F | 1891.1 6 | | 1650.12 | (13/2+) | |||
| 3714.3 7 | F | 2064.1 6 | | 1650.12 | (13/2+) | |||
| 4144.3 5 | F | (19/2+) | 1151.9 2 | | 2992.4 | (17/2+) | ||
| 4292.2 5 | F | (19/2+,17/2+) | 763.6 2 1300? | | 3528.6 2992.4 | (17/2+,15/2+) (17/2+) | ||
| 4675.2 6 | F | (21/2+) | 1682.7 3 | | 2992.4 | (17/2+) | ||
E(level): From least-squares fit to Eγ data for levels populated in γ-ray studies. Reduced χ2=2.1 is somewhat higher than critical χ2 of 1.7
Jπ(level): For high-spin states (J>9/2), assignments are based on γγ(θ) data for selected cascades, yrast nature of population of states, decay pattern and systematics of neighboring Fe nuclides
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - GS band | |||||||
| 0.0 | (3/2-) | 5.98 m 6 % β- = 100 | |||||
| 206.92 5 | (5/2-) | 206.9 1 | 100 | (M1+E2) | 0.0 | (3/2-) | |
| 959.53 9 | (7/2-) | 752.6 1 959.4 2 | 100 3 23 6 | D | 206.92 0.0 | (5/2-) (3/2-) | |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 2 - ν9/2[404] band | |||||||
| 861.67 11 | (9/2+) | 238 ns 5 % IT = 100 | |||||
| 1650.12 17 | (13/2+) | 788.44 12 | 100 | Q | 861.67 | (9/2+) | |
| 2992.4 5 | (17/2+) | 1342.0 6 | 100 | Q | 1650.12 | (13/2+) | |
| 4675.2 6 | (21/2+) | 1682.7 3 | | 2992.4 | (17/2+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 206.92 | (5/2-) | 206.9 1 | (M1+E2) | 0.018 | α=0.018 13 | |
| 861.67 | (9/2+) | 238 ns 5 % IT = 100 | 654.75 10 | (M2) | 0.00106 | B(M2)(W.u.)=0.0698 15, α=0.00106 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (3/2-) | 5.98 m 6 % β- = 100 | E(level): GS band. |
| 206.92 | (5/2-) | E(level): GS band. | |
| 629.09 | (3/2-) | XREF: F(620). | |
| 861.67 | (9/2+) | 238 ns 5 % IT = 100 | μ=-1.031 9 (2004Ma80,2014StZZ), Q=0.44 6 (2007Ve05,2014StZZ,2013StZZ) E(level): ν9/2[404] band. |
| 959.53 | (7/2-) | E(level): GS band. | |
| 1650.12 | (13/2+) | E(level): ν9/2[404] band. | |
| 2992.4 | (17/2+) | Configuration=νg9/2~#(4+ in 60Fe). E(level): Configuration=νg9/2~#(4+ in 60Fe). ν9/2[404] band. | |
| 4675.2 | (21/2+) | E(level): ν9/2[404] band. |
| E(level) | E(gamma) | Comments |
| 1705.2 | 1498.3 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided |
| 2510.59 | 1498.3 | E(γ): Multiply placed with intensity suitably divided I(γ): Multiply placed with intensity suitably divided |
1957Ri10: 61Fe first produced and identified in bombardment of Ni and Cu targets with 20 MeV neutrons and 28 MeV deuterons, followed by chemical separation. Measured half-life, β and γ
Structure calculations:
2010Sr02: levels, J, π, shell-model using GXPF1A nuclear interaction
2002Ca48: large-scale shell model calculations.
Q-value: S(2n)=14399.0 27, S(2p)=25610 240 (2012Wa38).