The low-lying, low-spin levels of 76Ge were studied with the (n,n′γ) reaction. Gamma-ray excitation function measurements were performed at incident neutron energies from 1.6 to 3.7 MeV, and γ-ray angular distributions were measured at neutron energies of 3.0 and 3.5 MeV. From these measurements, level spins, level lifetimes, γ-ray intensities, and multipole mixing ratios were determined. No evidence for a number of previously placed levels was found. Below 3.3 MeV, many new levels were identified, and the level scheme was re-evaluated. The B(E2) values support low-lying band structure. The 2+ mixed-symmetry state has been identified for the first time. A comparison of the level characteristics with large-scale shell model calculations yielded excellent agreement.
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This material is based upon work supported by the U.S. National Science Foundation under Grant Nos. PHY-1606890 and PHY-1404442.
Mukhopadhyay, Sharmistha; Crider, Benjamin P.; Brown, B. A.; Ashley, S. F.; Chakraborty, Anagha; Kumar, A.; McEllistrem, Marcus T.; Peters, Erin E.; Prados-Estévez, Francisco M.; and Yates, Steven W., "Nuclear Structure of 76Ge from Inelastic Neutron Scattering Measurements and Shell Model Calculations" (2017). Physics and Astronomy Faculty Publications. 527.