Measurement of KLL and KNN in at 500, 650 and 800 MeV

Neutron-proton elastic scattering spin-spin correlation parameter measurements between 500 and 800 MeV. II.CSSandCLS

“…At this angle, however, the incident proton beam must be polarized in order for the neutrons to be polarized. Measurements [19,20] at three of the energies used in this experiment found relatively large spin-transfer parameters for longitudinally polarized protons and neutrons ( K L L ), 3 1 but small values for transverse polarizations (K,,). Hence proton beams with a large L-type spin component were used for the production of the polarized neutron beam.…”

“…However, the new data were taken under somewhat different beam conditions than those in this experiment or Ref. [20]. Work is in progress to understand the cause of the observed difference.…”

“…[19] and [20]. However, the new data were taken under somewhat different beam conditions than those in this experiment or Ref.…”

“…The values of KLL were taken to be -0.499, -0.637, -0.620, and -0.604 at 484, 634, 720, and 788 MeV, respectively [20], from measurements made under very similar conditions to those of this experiment. The corresponding values of KNAT are -0.160, -0.079, -0.078, and -0.078.…”

Neutron-proton elastic scattering spin-spin correlation parameter measurements between 500 and 800 MeV. I.CSLandCLL<

“…The spin-transfer parameters for transversely and longitudinally polarized protons were measured in previous experiments [184,190] at the same energies used in this experiment. At these energies a longitudinally polarized proton beam with 80% polarization gives a neutron beam with 40-50% (longitudinal) polarization, but a transversely polarized proton beam gives a neutron beam with much smaller polarization.…”