ADOPTED LEVELS for 76Cu
Authors: Balraj Singh, Jun Chen and Ameenah R. Farhan | Citation: Nucl. Data Sheets 194, 3 (2024) | Cutoff date: 8-Jan-2024
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11321.4 keV 17 | S(n)= 4582.7 keV 12 | S(p)= 14030 keV SY | Q(α)= -13110 keV SY | ||
| Reference: 2021WA16 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0 | 3(-) | 637 ms 7 % β- = 100 % β-n = 7.2 5 |
| 0+X? | 1.27 s 30 % β- = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 3(-) | 637 ms 7 % β- = 100 % β-n = 7.2 5 | μ=-1.0907 15 (2017De30,2019StZV), Q=+0.36 2 (2017De30,2021StZZ) Measured %β- decay=88 3 which populates 76Zn (2009Wi03). |
Isotope produced and identified in mass-separated fission products from 235U(n,F) (1987Ar21, 1987LuZX, 1990Wi12, 1991Kr15)
Mass measurements: 2022Gi08 (mass excess=-51011.4 20, JYFL), 2017We16 (mass excess=-50981.55 89, CERN)
Other measurements:
2005Va19 (also thesis: 2002VaZX): 76Cu produced by 238U(n,F) and 238U(p,F) at ISOLDE-CERN facility using resonance ionization laser spectroscopy. Measured Eγ, Iγ, γγ, βγ, timing of βγ and γγ coin spectra. 2005Va19 searched for an isomer of 1.27 s proposed in 1990Wi12, but no evidence was found.
2009Wi03 (also 2008Wi01,2009Gr06): measured delayed %β-n. 76Cu isotope produced in the reaction 238U(p,F) with a 50 MeV beam provided by the HRIBF facility at ORNL RIB facility. The radioactive beams were extracted and mass separated. Detected decay products with a Micro-channel plate detector, an ionization chamber and a moving tape collector. Measured γ, β, γγ and βγ coin with two plastic β-detectors and γ-rays with four clover Germanium detectors.
2010Ho12: 9Be(86Kr,X) E=140 MeV/nucleon; fully-ionized 86Kr beam, A1900 fragment separator at NSCL facility using Bρ-ΔE-Bρ method. After separation, the mixed beam was implanted into the NSCL β-counting system (BCS) consisting of stacks of Si PIN detectors, a double-sided Si strip detector (DSSD) for implantation of ions, and six single-sided Si strip detectors (SSSD) followed by two Si PIN diodes. The identification of each implanted event was made from energy loss, time-of-flight information and magnetic rigidity. The implantation detector measured time and position of ion implantations and β decays. Neutrons were detected with NERO detector. Measured β- and βn-correlated events with ion implants; half-life of 76Cu and delayed-neutron emission probability. α total of 277 implants were detected, and three correlated βn coincidences were observed
2020De21, 2017De30: 76Cu produced in 1.4-GeV proton bombardment of UCx target using HRS mass separator, ISCOOL gas-filled segmented linear Paul trap, and RILIS at ISOLDE-CERN facility. Cu isotopes were selectively ionized by the RILIS laser ion source, accelerated to 30 keV for mass separation with high-resolution mass separator (HRS), and injected into ISCOOL gas-filled linear Paul trap. Measured hyperfine spectra and isotope shifts using Collinear Resonance Ionization spectroscopy (CRIS). Deduced hyperfine structure parameters, magnetic dipole moment and electric quadrupole moment
Mass measurements: 2017We16, 2007Gu09 (also 2005Gu36)
Theoretical calculations: four primary references for structure and three for decay characteristics retrieved from the NSR database (www.nndc.bnl.gov/nsr/) are listed in this dataset under ’document’ records.
Q-value: Estimated uncertainties (2021Wa16): 200 for S(p), 300 for Q(α)
Q-value: Q(β-n)=3506.0 22, S(2n)=11118 6, S(2p)=32020 400 (syst) (2021Wa16)