Collision Spectroscopy. I. Analysis of the scattering of He+ by Ne and Ar
MetadataShow full item record
Experimental data on the differential scattering of He+ by Ne and Ar in the energy range from 10 eV to 100 keV are plotted in a reduced coordinate system suggested by a scaling law for the forward scattering. The resulting curves are used to determine the interaction potential. The repulsive interaction dominating at higher energies shows pronounced shell-structure effects; leading to the deduction of the screening constants for the L and M shells of Ar and for the K and L shells of Ne. At lower energies a polarization attraction appears, allowing deduction of the polarizabilities of Ne and Ar. A simple analytic potential is constructed, including a polarizability term appropriately damped inside the outer shell, which fits the data over the entire range. In addition to the pure elastic scattering, effects of inelastic interactions are diagnosed. A prominent curve crossing is located and the scattering pattern arising from it is interpreted by a semiclassical theory. In collisions with closer encounters, a different type of inelastic. process appears which apparently involves a more intense coupling than the curve crossing and which appears to open up a number of competing inelastic channels.
Showing items related by title, author, creator and subject.
Moore, Thomas R.; Walters, Donald L. (1988-08);Results of experiments on the dynamics of scattering in barium titanate are presented. Asymmetric scattering and centrosymmetric scattering are characterized as a function of incident-beam size, and photographs are ...
Acoustic scattering from sand dollars (dendraster excentricus) modeling as high aspect ratio oblate objects and comparison to experiment Dietzen, Gregory C. (Cambridge Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09);Benthic shells can contribute greatly to the scattering variability of the ocean bottom, particularly at low grazing angles. Among the effects of shell aggregates are increased scattering strength and potential subcritical ...
Gaussian Beam Propagation in Maritime Atmospheric Turbulence: Long Term Beam Spread and Beam Wander Analysis Toselli, I.; Agrawal, B.N.; S. Restaino, (2010);Laser beam propagation in maritime environment is particularly challenging, not only for scattering and absorption due to high humidity, but also for a different behavior of atmospheric turbulence with respect to terrestrial ...