Searching for resonances in the unbound 6Be nucleus using a radioactive 7Be beam

Journal Article · Sun Jan 01 04:00:00 EST 2012 · Journal - Korean Physical Society

DOI:https://doi.org/10.3938/jkps.61.1786· OSTI ID:1061547

Chae, K. Y. ^[1]; Bardayan, Daniel W ^[2]; Blackmon, Jeffery C ^[3]; Smith, Michael Scott ^[2]; Champagne, A. E. ^[4]; Fitzgerald, R. P. ^[4]; Visser, D. W. ^[4]; Das, Jiban ^[2]; Guimaraes, V. ^[5]; Jones, K. L. ^[6]; Pain, S. D. ^[6]; Thomas, J. S. ^[6]; Johnson, M. S. ^[7]; KOZUB, RAYMOND L ^[2]; Livesay, R. J. ^[8]; Ma, Z. ^[1]; Nesaraja, Caroline D ^[2]

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1. University of Tennessee, Knoxville (UTK)
2. ORNL
3. Louisiana State University
4. University of North Carolina, Chapel Hill
5. University of Sao Paulo, BRAZIL
6. Rutgers University
7. Oak Ridge Associated Universities (ORAU)
8. Colorado School of Mines, Golden

Knowledge of the 3He(3He,2p)4He reaction is important for understanding stellar burning and solar neutrino production. Previous measurements have found a surprisingly large rise in the cross section at low energies that could be due to a low energy resonance in the 3He + 3He (6Be) system or electron screening. In the 6Be nucleus, however, no excited states have been observed above the first 2+ state at Ex = 1:67 MeV up to 23 MeV, even though several are expected. The d(7Be,t)6Be reaction has been studied for the first time to search for resonances in the 6Be nucleus that may affect our understanding of the 3He(3He,2p)4He reaction. A 100-MeV radioactive 7Be beam from the Holifield Radioactive Ion Beam Facility (HRIBF) was used to bombard CD2 targets, and tritons were detected by the Silicon Detector Array (SIDAR). It appears that a combination of reaction mechanisms are necessary to explain the observed triton energy spectrum.

• 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: 1061547
• Journal Information: Journal - Korean Physical Society, Journal Name: Journal - Korean Physical Society Journal Issue: 11 Vol. 61; ISSN 0374-4884
• Country of Publication: United States
• Language: English