Using the high resolution (forward) spectrometer, described in the previous section, and a polarimeter installed downstream the focal plane of the spectrometer the polarization of elastically scattered protons was measured for a series of nuclear targets. It has been for the first time demonstrated that, as well as in the case of the differential cross sections, the Glauber model describes adequately the data well reproducing diffractive pattern of the polarization.
An advantage of the Glauber model is that the proton-nucleus scattering amplitude can be explicitly written out as a convolution of the nuclear matter distribution in a nucleus and the free pp and pn elastic scattering amplitudes. As follows from the model, the derivative of polarization at small momentum transfer is defined only by the parameters of free p-nucleon scattering amplitude, and thus, must be a constant value in a wide range of atomic numbers of the nuclear targets (Levintov-Keller theorem). This basic feature of the polarization in proton-nucleus scattering, predicted by the theory, was fully confirmed by the experiment.
It has also been shown that the proton-nucleus scattering is sensitive mostly to two p-nucleon scattering amplitude: scalar and spin-orbit ones.
All other (spin-spin) amplitudes may be neglected which is a significant
simplification of the practical application of the Glauber model.
References
Spin Orbit Interaction And Density Distribution Of Nucleon Matter. (In
Russian)
G.D. Alkhazov, S.L. Belostotsky, A.A Vorobev, O.A. Domchenkov, Yu.V.
Dotsenko, N.P. Kuropatkin, V.N. Nikulin, M.A. Shuvaev (St. Petersburg,
INP) D. Legrand, G.L. Escudie (Saclay)
Published in Pisma Zh.Eksp.Teor.Fiz.28, 712-717, 1978
Spin Orbit Parameters From The Polarization In 1-Gev Proton Nucleus
Scattering.
G.D. Alkhazov, S.L. Belostotsky, O.A. Domchenkov, Yu.V. Dotsenko, N.P.
Kuropatkin, V.N. Nikulin, A.A. Vorobev, M.A. Shuvaev
Phys.Lett.B90, 364-366, 1980
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