ADOPTED LEVELS, GAMMAS for 75Cu
Authors: Alexandru Negret, Balraj Singh | Citation: Nucl. Data Sheets 114, 841 (2013) | Cutoff date: 30-Jun-2013
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=8088 keV 3 | S(n)= 6536 keV 7 | S(p)= 13300 keV SY | Q(α)= -1.253×104 keV 47 | ||
| Reference: 2012WA38 |
| References: | |||
| A | BE(86Kr,xγ) | B | BE(238U,Fγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | AB | 5/2(-) | 1.224 s 3 % β- = 100 % β-n = 3.5 6 | |||||
| 61.7 4 | AB | (1/2-,3/2-) | 310 ns 8 % IT = 100 | 61.7 4 | 100 | [M1,E2] | 0.0 | 5/2(-) |
| 66.2 4 | AB | (1/2-,3/2-) | 149 ns 6 % IT = 100 | 4.5 6 S 66.2 4 | 100 | [M1] [M1,E2] | 61.7 0.0 | (1/2-,3/2-) 5/2(-) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 61.7 | (1/2-,3/2-) | 310 ns 8 % IT = 100 | 61.7 4 | [M1,E2] | 2.0 | α=2.0 18 |
| 66.2 | (1/2-,3/2-) | 149 ns 6 % IT = 100 | 4.5 6 | [M1] | 54 | α=54 20 |
| (1/2-,3/2-) | 149 ns 6 % IT = 100 | 66.2 4 | [M1,E2] | 1.5 | α=1.5 13 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 5/2(-) | 1.224 s 3 % β- = 100 % β-n = 3.5 6 | μ=+1.0062 13 (2009Fl03,2010Vi07,2011StZZ), Q=-0.269 16 (2010Vi07,2011StZZ) Dominant (≈90%) configuration=π1f5/2 (2010Da06), with significant coupling to the 2+ vibrational excitation, as suggested by the deviation of measured magnetic moment from Schmidt value. Measurements of spin=3/2 and magnetic moments for 71Cu and 73Cu suggest inversion of π2p3/2 to π1f5/2 orbitals in νg9/2 mid-shell. |
| 61.7 | (1/2-,3/2-) | 310 ns 8 % IT = 100 | Jπ(level): 1/2- and 3/2- doublet expected from large-scale shell model calculations, corresponding to p1/2 and p3/2 orbitals, respectively. The ordering of the two Jπ’s could not be established (2013Pe03). T1/2(level): From time difference between the implantation of the heavy ions in Si detectors and the delayed γ rays detected with three HPGe detectors (2013Pe03) in Be(86Kr,Xγ). |
| 66.2 | (1/2-,3/2-) | 149 ns 6 % IT = 100 | Jπ(level): 1/2- and 3/2- doublet expected from large-scale shell model calculations, corresponding to p1/2 and p3/2 orbitals, respectively. The ordering of the two Jπ’s could not be established (2013Pe03). T1/2(level): From time difference between the implantation of the heavy ions in Si detectors and the delayed γ rays detected with three HPGe detectors (2013Pe03) in Be(86Kr,Xγ). |
| E(level) | E(gamma) | Comments |
| 66.2 | 4.5 | E(γ): γ not observed directly. Its existence is assumed based on the decay and population time pattern of the two observed gammas, 61.7 and 66.2 in 2013Pe03. |
75Cu produced and identified in thermal neutron fission of 235U: 1985Re01, 1987Ar21, 1990Be13, 1991Kr15
2013Pe03: 75Cu was produced following the fragmentation of 86Kr (60.4 MeV/nucleon) beam on Be; Bρ-ΔE-tof technique was applied using LISE2000 spectrometer at GANIL to identify the fragments. Si and HPGe detectors used to measure particle and γ spectra, respectively. Deduced isomers, half-lives, and level scheme. α previous very similar experiment of the same group is presented in 2010Da06 and 1999DaZQ.
2010Vi07, 2009Fl03: 75Cu was produced at ISOLDE-CERN facility by 1 GeV proton induced fission of uranium carbide target. Resonance Ionization laser ion source (RILIS) used to laser ionize the atoms followed by high-resolution isotope separation (HRS) and ISCOOL Paul trap. Measured hyperfine structure. Deduced spin, magnetic dipole moment and electric quadrupole moment of the ground state. Collinear and in-source laser spectroscopic technique. Comparison with large-scale shell-model calculations using 56Ni core.
2011Il01: 75Cu beam produced from fission of 238U (using UCx target with protons at Holifield Radioactive Ion beam facility). Isotopic half-life measured from decay curves of 8 γ rays from decay of 75Cu
2012Ka36: 75Cu isomers produced in 9Be(238U,X) at 345 MeV/nucleon using BigRIPS separator at RIKEN facility. Measured delayed γ rays and isomer half-life. Total of 5.4×105 75Cu fragments detected
Mass measurement (Penning-trap system): 2007Ra27, 2005Gu36
Structure calculations: 2010Si11 (levels, J, π, μ), 2005Bo19 (half-life and delayed-neutron emission probability), 2005Li54 (calculated 5/2- and 3/2- levels), 2004Sm03 (levels, shell model), 2012Sr02, 2012Sr03 (shell model).
Q-value: Estimated ΔS(p)=400 (2012Wa38)
Q-value: S(2n)=11627 3, S(2p)=32150 500 (syst), Q(β-n)=3214 3 (2012Wa38)