Neutron-proton analyzing power measurements from 375 to 775 MeV

C. R. Newsom, C. L. Hollas, R. D. Ransome, P. J. Riley, B. E. Bonner, J. G.J. Boissevain, J. J. Jarmer, M. W. McNaughton, J. E. Simmons, T. S. Bhatia, G. Glass, J. C. Hiebert, L. C. Northcliffe, W. B. Tippens

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As part of an experimental study of the nucleon-nucleon interaction at medium energy, the free neutron-proton analyzing power An(n*,Tn) has been measured at nine incident neutron energies in the range 375 Tn 775 MeV and for neutron c.m. angles in the range 57° n* 159°. Unpolarized neutrons with a broad continuum of energies, produced by interaction of an 800 MeV proton beam with a beryllium target, were scattered from a polarized proton target. At each angle, for the whole energy region, the scattered neutron and conjugate recoil proton were detected in coincidence. A previously unseen minimum is observed in the energy dependence of An(* 100°) near 625 MeV.

Original languageEnglish (US)
Pages (from-to)965-974
Number of pages10
JournalPhysical Review C
Issue number3
StatePublished - Jan 1 1989
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Newsom, C. R., Hollas, C. L., Ransome, R. D., Riley, P. J., Bonner, B. E., Boissevain, J. G. J., Jarmer, J. J., McNaughton, M. W., Simmons, J. E., Bhatia, T. S., Glass, G., Hiebert, J. C., Northcliffe, L. C., & Tippens, W. B. (1989). Neutron-proton analyzing power measurements from 375 to 775 MeV. Physical Review C, 39(3), 965-974.