|At this site||
Dr. Joseph R. Manson
Mansons research interests are in theoretical surface physics, materials
science and atomic physics. A long standing interest and his current main thrust is the
theory of atomic and molecular scattering from surfaces. The scattering of monoenergetic
beams of atoms from surfaces is a well-developed experimental technique that has produced
enormous amounts of new information about atom-surface interaction forces, and about the
structure and dynamics of surfaces. Much of Mansons work involves collaborating with
experimental groups on the development and interpretation of new measurements, and this
requires development of new theoretical tools and substantial computational effort.
Present work involves calculating intensities for the scattering of He atoms from surface
defects, resonance scattering, the scattering of rotating and vibrating molecules from
surfaces, rare gas scattering from molten metal surfaces, and surface scattering under
classical conditions. One extension of this work has been to re-examine and extend the
theory of gas-surface interactions in the rarefied gas limit. The detailed state-to-state
scattering theories, both quantum mechanical and classical, which have already been tested
in beams-surface experiments are being used to calculate such useful aerodynamic
quantities as the energy accommodation coefficient and the lift and drag coefficients for
a rarefied gas in contact with a surface. This work has very practical applications such
as predicting the re-entry of space vehicles into a planetary atmosphere, rocket exhaust
plumes in outer space, gas turbines and micro-mechanical devices.
FORMER GROUP MEMBERS
Brown, Jason S.
Origin: Beijing, China