Analyzing power for the O16(p,n)F16(4-,6.37 MeV) reaction at 134 MeV

R. Madey, A. Fazely, B. D. Anderson, A. R. Baldwin, A. M. Kalenda, R. J. McCarthy, P. C. Tandy, J. W. Watson, W. Bertozzi, T. Buti, M. Finn, M. Kovash, B. Pugh, C. C. Foster

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We measured the analyzing power for the O16(p,n)F16 (4-,6.37 MeV) reaction at 134.0 MeV and the differential cross section for the same reaction at 135.2 MeV. The shape of the cross section for the transition to this unnatural parity stretched state is described well by a distorted-wave impulse-approximation calculation using a (d52,p32-1)4- configuration and the effective interaction derived by Love and Franey from nucleon-nucleon phase shifts. The analyzing power from this calculation reproduces all of the qualitative features of the data and supports the use of the impulse approximation as an excellent starting point for describing the reaction mechanism. Quantitative agreement between the experimental and theoretical analyzing power can be improved by eliminating the imaginary tensor term of this interaction and taking the real part to be that derived by Love from the Sussex matrix elements. The sensitivity of the calculations to the choice of optical potentials and the importance of spin-orbit distortion is explored. NUCLEAR REACTIONS O16(p,n)F16, E=134 MeV; measured neutron spectra at 12 angles between =0° and 62.9°; extracted () and A() to J=4-,6.37 MeV state of F16. Compared angular distributions of () and A() with calculations based on a nucleon-nucleon effective interaction.

Original languageEnglish
Pages (from-to)1715-1721
Number of pages7
JournalPhysical Review C - Nuclear Physics
Issue number4
StatePublished - 1982

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Copyright 2015 Elsevier B.V., All rights reserved.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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