Zeitschrift für Physik A Atomic Nuclei

, Volume 327, Issue 3, pp 341–355 | Cite as

Low-energy cross sections for11B(p, 3α)

  • H. W. Becker
  • C. Rolfs
  • H. P. Trautvetter


The11B(p, 3α) reaction has been investigated in the energy range fromEc.m.=22 to 1100 keV with the use of either a proton beam and a11B solid target or with the use of a11B heavy ion beam incident on a hydrogen jet gas target. The reaction mechanisms have been studied via kinematically complete coincidence measurements showing that the reaction proceeds predominantly by a sequential decay via8Be. The measurement of absolute cross sections,α-angular distributions and excitation functions is reported. The astrophysicalS(E) factor has been described by means of an empirical fit to the data, leading to a zero-energy intercept ofS(0)=197±12 MeVb. Conclusions drawn on the use of this reaction as an advanced fuel in fusion reactors remain essentially unchanged by the present data.


25.85.−w 24.90.+d 95.30.−k 


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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • H. W. Becker
    • 1
  • C. Rolfs
    • 1
  • H. P. Trautvetter
    • 1
  1. 1.Institut für KernphysikUniversität MünsterGermany

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