Single-Neutron Excitations in Neutron-Rich ⁸³Ge and ⁸⁵Se

Journal Article · Mon Jan 01 04:00:00 EST 2007 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.76.044302· OSTI ID:932031

Thomas, Jeffrey S ^[1]; Arbanas, Goran ^[1]; Bardayan, Daniel W ^[1]; Blackmon, Jeff C ^[1]; Cizewski, Jolie ^[1]; Dean, David Jarvis ^[1]; Fitzgerald, Ryan ^[1]; Greife, Uwe ^[1]; Gross, Carl J ^[1]; Johnson, Micah ^[1]; Grzywacz-Jones, Kate L ^[1]; KOZUB, RAYMOND L ^[1]; Liang, J Felix ^[1]; Livesay, Jake ^[1]; Ma, Zhanwen ^[1]; Moazen, Brian H ^[1]; Nesaraja, Caroline D ^[1]; Shapira, Dan ^[1]; Smith, Michael Scott ^[1]; Visser, Dale William ^[1]

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1. ORNL

The 2H(82Ge,p)83Ge and 2H(84Se,p)85Se reactions were studied with radioactive beams of 82Ge and 84Se at beam energies of Ebeam = 330 and 380 MeV, respectively. Excitation energies, proton angular distributions, and asymptotic normalization coefficients have been determined for the lowest lying states of 83Ge and 85Se. Spectroscopic factors have also been extracted under normal assumptions of the bound-state potential properties in the DWBA analysis. However, the peripheral character of the measurements leads to large uncertainties in this extraction. Shell model calculations have been performed in the region above 78Ni, comparing the single-particle properties of the even-Z, N = 51 nuclei up to 91Zr and including 83Ge and 85Se. Direct-semidirect neutron capture calculations to 83Ge and 85Se have also been performed using the spectroscopic input from these (d,p) reaction measurements.

• Research Organization: Oak Ridge National Laboratory (ORNL); Holifield Radioactive Ion Beam Facility
• Sponsoring Organization: ORNL LDRD Director's R&D; SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 932031
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 76
• Country of Publication: United States
• Language: English