Searching for Resonances in the Unbound Nucleus {sup 6}Be

Journal Article · Tue Mar 10 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3120161· OSTI ID:21289655

Chae, K Y; Ma, Z; Nesaraja, C D ^[1]; Bardayan, D W; Blackmon, J C; Smith, M S ^[2]; Champagne, A E; Fitzgerald, R P; Visser, D W ^[3]; Das, J J ^[4]; Guimaraes, V ^[5]; Jones, K L; Pain, S D; Thomas, J S ^[6]; Johnson, M S ^[7]; Kozub, R L ^[8]; Livesay, R J ^[9]

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1. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States)
2. Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)
3. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599 (United States)
4. Inter University Accelerator Centre, P.O. Box 10502, New Delhi 110067 (India)
5. Instituto de Fisica, Universidade de Sao Paulo, C.P. 66318, 05389-970 Sao Paulo, SP (Brazil)
6. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854 (United States)
7. Oak Ridge Associated Universities, Bldg 6008, P.O. Box 2008, Oak Ridge, TN 37831 (United States)
8. Department of Physics, Tennessee Technological University, Cookeville, TN 38505 (United States)
9. Department of Physics, Colorado School of Mines, Golden, CO 80401 (United States)

Knowledge of the {sup 3}He({sup 3}He,2p){sup 4}He 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 {sup 3}He+{sup 3}He ({sup 6}Be) system or electron screening. In the {sup 6}Be nucleus, however, no excited states have been observed above the first 2{sup +} state at E{sub x} = 1.67 MeV up to 23 MeV, even though several are expected. The d({sup 7}Be,t){sup 6}Be reaction has been studied for the first time to search for resonances in the {sup 6}Be nucleus that may affect our understanding of the {sup 3}He({sup 3}He,2p){sup 4}He reaction. A 100-MeV {sup 7}Be beam from the Holifield Radioactive Ion Beam Facility (HRIBF) was used to bombard CD{sub 2} targets, and tritons were detected by the Silicon Detector Array (SIDAR). It appears that a combination of reaction mechanisms is necessary to explain the observed triton energy spectrum.

• OSTI ID: 21289655
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1099; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 6
BERYLLIUM 7
BERYLLIUM 7 REACTIONS
CROSS SECTIONS
DEUTERIUM TARGET
ENERGY DEPENDENCE
EXCITED STATES
HELIUM 3 REACTIONS
HELIUM 3 TARGET
HELIUM 4
MEV RANGE
NUCLEAR STRUCTURE
RADIOACTIVE ION BEAMS
SI SEMICONDUCTOR DETECTORS
TRITONS