RAINBOW SCATTERING IN AXIAL ION-CHANNELING INVOLVING VERY THIN-CRYSTALS - EXPERIMENTAL AND THEORETICAL RESULTS

The authors have studied the angular scattering distributions produced in axial channeling when incident protons (7 Mev) are well aligned to the axial direction of a thin silicon crystal (1400 A). Measured angular distributions obtained in the LT AN BR 100 RT AN BR and LT AN BR 110 RT AN BR directions using a 2-D position-sensitive detector have been interpreted by comparison with Monte Carlo trajectory calculations for these channels in the momentum approximation. The measured angular distributions show structures at certain off-axis angles which are in good agreement with the calculations.