Decay Spectroscopy of ^76-79Cu, ^79-81Zn, and ^83-85Ga

Conference · Thu Jan 01 04:00:00 EST 2009

OSTI ID:948541

Gross, C. J. ^[1]; Winger, J. A. ^[2]; Ilyushkin, S. ^[2]; Rykaczewski, K. P. ^[1]; Liddick, S. N. ^[3]; Darby, I. G. ^[3]; Grzywacz, R. K. ^[3]; Bingham, C. R. ^[3]; Shapira, D. ^[1]; Mazzocchi, C. ^[3]; Padgett, S. ^[3]; Rajabali, M. M. ^[3]; Cartegni, L. ^[3]; Zganjar, E. F. ^[4]; Piechaczek, A. ^[4]; Batchelder, J. C. ^[5]; Hamilton, J. H. ^[6]; Goodin, C. T. ^[6]; Korgul, A. ^[7]; Krolas, W. ^[8]

---

1. Oak Ridge National Laboratory (ORNL)
2. Mississippi State University (MSU)
3. University of Tennessee, Knoxville (UTK)
4. Louisiana State University
5. Oak Ridge Associated Universities (ORAU)
6. Vanderbilt University
7. University of Warsaw
8. H. Niewodniczanski Institute of Nuclear Physics (INP), Krakow, Poland

The beta-decay properties of neutron-rich fission fragments of Cu, Zn, and Ga isotopes were studied at the Holifield Radioactive Ion Beam Facility. Beams of ^75-79Cu, ^79-81Zn, and ^83-85Ga were formed and delivered to two new end-stations at the facility. The Low-energy Radioactive Ion Beam Spectroscopy Station is a traditional on-line low energy (200 keV) beam line with 4 clover Ge detectors, two half-cylindrical plastic beta-detectors, and a moving tape collector. In addition, many of the beams were accelerated to above 2 MeV/u and delivered to a micro-channel plate and transmission ion chamber located just in front of the same detector setup. In both cases, fine adjustment of an isobar separator was used to enhance the isotope of interest. Excited levels in the daughters and beta-delayed neutron branching ratios were measured and used to confirm isotope identification. The decays from ⁷⁹Cu and ⁸⁵Ga were observed for the first time as was the ⁸⁴Ge 2₁⁺ level populated by beta and beta-n decay channels.

• Research Organization: Oak Ridge National Laboratory (ORNL); Holifield Radioactive Ion Beam Facility
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 948541
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BRANCHING RATIO
Beta decay
CLOVER
DECAY
FISSION FRAGMENTS
NEUTRONS
NUCLEAR PHYSICS
PLASTICS
PLATES
RADIOACTIVE ION BEAMS
SPECTROSCOPY
radioactive ion beams