Elastic Scattering of Polarized Protons on Deuterium at 800 MeV.
Elastic Scattering of Polarized Protons on Deuterium at 800 MeV.

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Published: 1984

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A specific set of spin transfer coefficients has been measured for proton-deuteron elastic scattering at 800 MeV using an unpolarized liquid deuterium target. The experiment was done using the High Resolution Spectrometer (HRS) at the Los Alamos Meson Physics Facility (LAMPF) with a polarized proton beam. The scattered proton spin direction was determined using the Focal Plane Polarimeter (FPP) of the HRS, which employs a carbon analyzer. Some of the spin dependent parameters measured in this experiment are of considerable interest because they provide selective information about the nucleon-nucleon (NN) amplitude. Since the deuteron is the simplest bound nucleus, pd elastic scattering is particularly well suited for testing multiple scattering theories. These measurements will also be used to eventually determine the full pd collision matrix, which contains all possible information about the scattering process. In addition, the experimental setup is described for a polarized proton-polarized deuterium target spin transfer experiment also done at the HRS at 800 MeV incident proton energy. 71 references.

Elastic Scattering of Polarized Protons on Helium Three at 800 MeV.
Elastic Scattering of Polarized Protons on Helium Three at 800 MeV.

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Published: 1985

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A set of spin dependent parameters and cross sections has been measured for polarized p-3He elastic scattering over the range of q .7 to 4.2 fm−1. The experiment was done at the Los Alamos Meson Physics Facility (LAMPF) using the High Resolution Spectrometer (HRS) with a polarized proton beam at .8 GeV. The focal plane polarimeter of the HRS was used to determine the spin direction of the scattered proton. Since 3He is one of the simplest nuclei, polarized p-3He scattering provides a very sensitive test of multiple scattering theories. The theoretical analysis was done by using two different wave functions for 3He as input to the multiple scattering theory. The theoretical calculations and experimental data together will give us useful information about nucleon-nucleon amplitudes and also help us to obtain a better understanding of the scattering process. 68 refs., 55 figs., 9 tabs.

Analyzing Powers and Proton Spin Transfer Coefficients in the Elastic Scattering of 800 MeV Polarized Protons from an L-type Polarized Deuteron Target at Small Momentum Transfers
Analyzing Powers and Proton Spin Transfer Coefficients in the Elastic Scattering of 800 MeV Polarized Protons from an L-type Polarized Deuteron Target at Small Momentum Transfers

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Published: 1986

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Analyzing powers and spin transfer coefficients which describe the elastic scattering of polarized protons from a polarized deuteron target have been measured. The energy of the proton beam was 800 MeV and data were taken at laboratory scattering angles of 7, 11, 14, and 16.5 degrees. One analyzing power was also measured at 180 degrees. Three linearly independent orientations of the beam polarization were used and the target was polarized parallel and antiparallel to the direction of the beam momentum. The data were taken with the high resolution spectrometer at the Los Alamos Meson Physics Facility (experiment 685). The results are compared with multiple scattering predictions based on Dirac representations of the nucleon-nucleon scattering matrices. 27 refs., 28 figs., 4 tabs.