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Spin dependence in pp scattering in the Coulomb-nuclear interference region

W. K. Pitts, W. Haeberli, J. S. Price, H. O. Meyer, S. F. Pate, R. E. Pollock, B. von Przewoski, T. Rinckel, J. Sowinski, F. Sperisen, and P. V. Pancella
Phys. Rev. C 45, R1(R) – Published 1 January 1992
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Abstract

The analyzing power Ay(θ) for pp elastic scattering at 185.4 MeV has been measured with a new technique in which the polarized beam in a storage ring was scattered from an internal H2 gas target. The measurement covered the angular range θc.m.=5.45°–21.36°, where Ay is dominated by interference between Coulomb and nuclear amplitudes. It is found that electromagnetic spin-orbit effects are required to explain the data. The present measurement demonstrates for the first time the feasibility and the advantages of nuclear physics experiments with polarized beams in storage rings.

  • Received 16 August 1991

DOI:https://doi.org/10.1103/PhysRevC.45.R1

©1992 American Physical Society

Authors & Affiliations

W. K. Pitts, W. Haeberli, and J. S. Price

  • University of Wisconsin–Madison, Madison, Wisconsin 53706

H. O. Meyer, S. F. Pate, R. E. Pollock, B. von Przewoski, T. Rinckel, J. Sowinski, and F. Sperisen

  • Indiana University and Indiana University Cyclotron Facility, Bloomington, Indiana 47405

P. V. Pancella

  • Western Michigan University, Kalamazoo, Michigan 49008

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Issue

Vol. 45, Iss. 1 — January 1992

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