Breakup of {sup 6}He incident on {sup 209}Bi near the Coulomb barrier
Journal Article
·
· Physical Review. C, Nuclear Physics
- Physics Department, University of Notre Dame, Notre Dame, Indiana 46556-5670 (United States)
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
- Physics Department, Wabash College, Crawfordsville, Indiana 47933 (United States)
- Department of Physics and Engineering, Hope College, Holland, Michigan 49423-9000 (United States)
- Physics Department, University of Wisconsin-Green Bay, Green Bay, Wisconsin 54311-7001 (United States)
- Physics Department, Indiana University South Bend, South Bend, Indiana 46634-7111 (United States)
- Department of Chemistry, Hope College, Holland, Michigan 49423-9000 (United States)
A neutron-{alpha}-particle coincidence experiment was performed to study breakup of {sup 6}He on a {sup 209}Bi target at an incident energy of 22.5 MeV. Direct breakup, as well as breakup through the 2{sup +} excited state of {sup 6}He and also the {sup 5}He+n channel, could be distinguished. A total breakup cross section of 205{+-}65 mb was measured. The data compare well with a coupled-channels calculation that assumes a 50% reduction in the B(E1) computed from a pure {sup 4}He+2n cluster configuration, in agreement with results obtained at much higher energies. A value of B(E2{up_arrow})=5.4{+-}0.7e{sup 2}fm{sup 4} is deduced for the 2{sup +} state in {sup 6}He.
- OSTI ID:
- 20995106
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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