Determination of analyzing powers for 189 MeV proton elastic scattering onC12
- 1 February 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 45 (2) , R504-R508
- https://doi.org/10.1103/physrevc.45.r504
Abstract
The analyzing power Ay for proton elastic scattering on C12 has been precisely and absolutely determined at three scattering angles (θlab=16.3°, 17.3°, and 18.3°) at an incident proton energy of 188.9 MeV. The technique employed requires statistically high quality polarization transfer measurements, combined with the constraints imposed on polarization observables for reactions with the spin structure 1/2+0→1/2+0. These results represent some of the most accurately known spin observables at intermediate energies and serve as calibration points for secondary standards.Keywords
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