ADOPTED LEVELS, GAMMAS for 59Cr
Author: M. Shamsuzzoha Basunia | Citation: Nucl. Data Sheets 151, 1 (2018) | Cutoff date: 1-Apr-2018
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=7.44×103 keV 21 | S(n)= 4.17×103 keV 22 | S(p)= 1.497×104 keV 23 | Q(α)= -8.84×103 keV 27 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 59V β- decay | B | 59Cr IT decay (96 μs) |
| C | 13C(48Ca,2pγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC | (1/2-) | 0.74 s 28 % β- = 100 | |||||
| 207.4 3 | ABC | (3/2-) | 207.4 3 | 100 | 0.0 | (1/2-) | ||
| 309.7 4 | ABC | (5/2-) | 102.5 2 | 100 | 207.4 | (3/2-) | ||
| 502.7 11 | B | (9/2+) | 96 µs 20 | 193 1 | 100 | [M2] | 309.7 | (5/2-) |
| 524.4 5 ? | A | 317.3 4 | 100 | 207.4 | (3/2-) | |||
| 800.0 4 | A | 490.8 5 592.4 4 799.9 5 | 55 10 100 7 26 7 | 309.7 207.4 0.0 | (5/2-) (3/2-) (1/2-) | |||
| 827.7 4 | C | (7/2-) | 518.0 2 | 100 | 309.7 | (5/2-) | ||
| 915.3 4 | A | 606.0 4 707.6 5 | 100 6 17 5 | 309.7 207.4 | (5/2-) (3/2-) | |||
| 1083.8 11 ? | C | (9/2)- | 256 1 ? | 100 | 827.7 | (7/2-) | ||
| 1315.9 11 | C | (13/2+) | 813.2 3 | 100 | 502.7 | (9/2+) | ||
| 1340.7 5 | A | 425.5 4 1030.8 4 | 71 13 100 13 | 915.3 309.7 | (5/2-) | |||
| 1365.6 5 | A | 841.4 4 1157.8 5 | 100 11 30 7 | 524.4 207.4 | (3/2-) | |||
| 1531.8 5 ? | A | 1222.1 4 | 100 | 309.7 | (5/2-) | |||
| 2509.0 8 ? | A | 977.2 5 1593.4 5 ? 2198.7 5 ? | 64 9 100 18 23 9 | 1531.8 915.3 309.7 | (5/2-) | |||
E(level): From least-squares fit to Eγ.
Jπ(level): Possible values suggested in 1999So20, except otherwise noted. For small to moderate deformations, a (ν f5/2) g.s. configuration is expected, with the 35th neutron occupying the 3/2[301] and 1/2[321] orbitals, respectively, for prolate and oblate deformations. QRPA calculations predict prolate and oblate configurations 480 keV apart (1999So20), so 59Cr possibly exhibits shape coexistence. 1998Gr14 suggest that the 503-keV isomeric level is analogous to g9/2 intruder states known in several nuclides with N≈40 and Z≈28 which de-excite via an M2 transition to a 5/2- (ν f5/2) state (e.g., in 61Fe, 67Ni). For oblate deformation, the 1/2[321], 3/2[321] and 9/2[404] orbitals can lie quite close in energy, and a 5/2- state could arise from a hole in the 5/2[312] orbital. For prolate deformation, a 9/2+ state would lie at very high excitation (see, e.g., fig. 7 of 1998So03), so oblate deformation is favored for 59Cr.
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Additional Data |
| 502.7 | (9/2+) | 96 µs 20 | 193 1 | [M2] | B(M2)(W.u.)=0.080 17 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (1/2-) | 0.74 s 28 % β- = 100 | Possible (ν 1/2[321]) oblate configuration (see Jπ footnote). E(level): Possible (ν 1/2[321]) oblate configuration (see Jπ footnote). |
| 207.4 | (3/2-) | Possible (ν 3/2[321]) oblate configuration (see Jπ footnote). E(level): Possible (ν 3/2[321]) oblate configuration (see Jπ footnote). | |
| 309.7 | (5/2-) | Possible (ν 5/2[312])-1 oblate configuration (see Jπ footnote). E(level): Possible (ν 5/2[312])-1 oblate configuration (see Jπ footnote). | |
| 502.7 | (9/2+) | 96 µs 20 | Possible (ν 9/2[404]) intruder oblate configuration (see Jπ footnote). E(level): Possible (ν 9/2[404]) intruder oblate configuration (see Jπ footnote). |
| 524.4 | E(level): The ordering of the 841-317 and 1222-977 cascades are uncertain thus the location of the 525 and 1532 levels would be different if the orderings are reversed. | ||
| 827.7 | (7/2-) | Jπ(level): Proposed in 2004Fr17 on the basis of 59Cr β-decay to 59Mn, γ-ray placement, analysis of transition strengths, and assumption of yrast state feeding. | |
| 1083.8 | (9/2)- | Jπ(level): Proposed in 2004Fr17 on the basis of 59Cr β-decay to 59Mn, γ-ray placement, analysis of transition strengths, and assumption of yrast state feeding. | |
| 1315.9 | (13/2+) | Jπ(level): Proposed in 2004Fr17 on the basis of 59Cr β-decay to 59Mn, γ-ray placement, analysis of transition strengths, and assumption of yrast state feeding. | |
| 1531.8 | E(level): The ordering of the 841-317 and 1222-977 cascades are uncertain thus the location of the 525 and 1532 levels would be different if the orderings are reversed. |
| E(level) | E(gamma) | Comments |
| 207.4 | 207.4 | E(γ): Weighted average of 207.8 4 (59V β- decay), 208 1 (59Cr it decay (96 μs)), and 207.1 3 (48Ca,2pγ). |
| 309.7 | 102.5 | E(γ): Weighted average of 102.0 4 (59V β- decay), 102 1 (59Cr it decay (96 μs)), and 102.7 2 (48Ca,2pγ). |
| 502.7 | 193 | E(γ): From 59Cr IT decay (96 μs) M(γ): RUL eliminates E3, M3 and higher multipolarities; M2 favored by analogy with isomeric states in neighboring nuclides. |
| 524.4 | 317.3 | E(γ): Ordering of the 841-317 cascade not determined with certainty (59V β- decay - 2005Li53). |
| 827.7 | 518.0 | E(γ): From (48Ca,2pγ) |
| 1083.8 | 256 | E(γ): From (48Ca,2pγ) |
| 1315.9 | 813.2 | E(γ): From (48Ca,2pγ) |
| 1365.6 | 841.4 | E(γ): Ordering of the 841-317 cascade not determined with certainty (59V β- decay - 2005Li53). |
| 1531.8 | 1222.1 | E(γ): Ordering of the 1222-977 cascade not determined with certainty (2005Li53). |
| 2509.0 | 977.2 | E(γ): Ordering of the 1222-977 cascade not determined with certainty (2005Li53). |
Measured mass excess: -48132 keV 20 (2018Mo14)
Production: on-line mass separation of products from W(76Ge,x), E(76Ge)=11.5 MeV/nucleon (1988Bo06,1985Bo49); fragmentation of 64.5 MeV/nucleon 65Cu beam by 9Be (1996Do23); 60.3 MeV/nucleon 86Kr beam fragmentation by Ni (1998Gr14); 59V β- decay (1999So20).