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Journal of the Korean Physical Society

, Volume 61, Issue 11, pp 1786–1791 | Cite as

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

  • K. Y. ChaeEmail author
  • D. W. Bardayan
  • J. C. Blackmon
  • M. S. Smith
  • A. E. Champagne
  • R. P. Fitzgerald
  • D. W. Visser
  • J. J. Das
  • V. Guimarães
  • K. L. Jones
  • S. D. Pain
  • J. S. Thomas
  • M. S. Johnson
  • R. L. Kozub
  • R. J. Livesay
  • Z. Ma
  • C. D. Nesaraja
Article

Abstract

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 E x = 1.67 MeV up to 23 MeV, even though several are expected. The 2H(7Be,3H)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 using the silicon detector array (SIDAR). A combination of reaction mechanisms appears to be necessary to explain the observed triton energy spectrum.

Keywords

Radioactive ion beams Inverse kinematics Transfer reactions Silicon detectors 

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Copyright information

© The Korean Physical Society 2012

Authors and Affiliations

  • K. Y. Chae
    • 1
    • 2
    Email author
  • D. W. Bardayan
    • 3
  • J. C. Blackmon
    • 3
  • M. S. Smith
    • 3
  • A. E. Champagne
    • 4
  • R. P. Fitzgerald
    • 4
  • D. W. Visser
    • 4
  • J. J. Das
    • 5
  • V. Guimarães
    • 6
  • K. L. Jones
    • 7
  • S. D. Pain
    • 7
  • J. S. Thomas
    • 7
  • M. S. Johnson
    • 8
    • 9
    • 10
  • R. L. Kozub
    • 11
  • R. J. Livesay
    • 12
  • Z. Ma
    • 2
    • 3
  • C. D. Nesaraja
    • 2
    • 3
  1. 1.Department of PhysicsSungkyunkwan UniversitySuwonKorea
  2. 2.Department of Physics and AstronomyUniversity of TennesseeKnoxvilleUSA
  3. 3.Physics DivisionOak Ridge National LaboratoryOak RidgeUSA
  4. 4.Department of Physics and AstronomyUniversity of North CarolinaChapel HillUSA
  5. 5.Inter University Accelerator CentreNew DelhiIndia
  6. 6.Instituto de FísicaUniversidade de São PauloSão PauloBrazil
  7. 7.Department of Physics and AstronomyRutgers UniversityPiscatawayUSA
  8. 8.Oak Ridge Associated UniversitiesOak RidgeUSA
  9. 9.Lawrence Livermore National LaboratoryLivermoreUSA
  10. 10.One Washington SquareSan Jose State UniversitySan JoseUSA
  11. 11.Department of PhysicsTennessee Technological UniversityCookevilleUSA
  12. 12.Department of PhysicsColorado School of MinesGoldenUSA

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