Application of the Trojan Horse Method to study neutron induced reactions: the 17O(n, α)14C reaction

EPJ Web of Conferences. 2014;66:07008 DOI 10.1051/epjconf/20146607008

 

Journal Homepage

Journal Title: EPJ Web of Conferences

ISSN: 2100-014X (Online)

Publisher: EDP Sciences

LCC Subject Category: Science: Physics

Country of publisher: France

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Gulino M.
Spitaleri C.
Tang X.D. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Guardo G.L.
Lamia L.
Cherubini S.
Bucher B. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Burjan V. (Nuclear Physics Institute of ASCR)
Couder M. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Davies P. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
deBoer R. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Fang X. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Goldberg V.Z. (Cyclotron Institute,Texas A&M University)
Hons Z. (Nuclear Physics Institute of ASCR)
Kroha V. (Nuclear Physics Institute of ASCR)
Lamm L. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
La Cognata M. (INFN Laboratori Nazionali del Sud)
Li C. (China Institute of Atomic Energy)
Ma C. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Mrazek J. (Nuclear Physics Institute of ASCR)
Mukhamedzhanov A.M. (Cyclotron Institute,Texas A&M University)
Notani M. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
O’Brien S. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Pizzone R.G. (INFN Laboratori Nazionali del Sud)
Rapisarda G.G.
Roberson D. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Sergi M.L. (INFN Laboratori Nazionali del Sud)
Tan W. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)
Thompson I.J. (Lawrence Livermore National Laboratory)
Wiescher M. (Department of Physics and Joint Institute for Nuclear Astrophysics, University of Notre Dame)

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Time From Submission to Publication: 6 weeks

 

Abstract | Full Text

The reaction 17O(n, α)14C was studied using virtual neutrons coming from the quasi-free deuteron break-up in the three body reaction 17O+d → α+14C+p. This technique, called virtual neutron method, extends the Trojan Horse method to neutron-induced reactions allowing to study the reaction cross section avoiding the suppression effects coming from the penetrability of the centrifugal barrier. For incident neutron energies from thermal up to a few hundred keV, direct experiments have shown the population of two out of three expected excited states at energies 8213 keV and 8282 keV and the influence of the sub-threshold level at 8038 keV. In the present experiment the 18O excited state at E* = 8.125 MeV, missing in the direct measurement, is observed. The angular distributions of the populated resonances have been measured for the first time. The results unambiguously indicate the ability of the method to overcome the centrifugal barrier suppression effect and to pick out the contribution of the bare nuclear interaction.