Abstract
A new approximation to the short-wavelength scattering amplitude from an impenetrable sphere is presented. It is uniform in the scattering angle and it is more accurate than previously known approximations (including Fock’s theory of diffraction) by up to several orders of magnitude. It remains valid in the transition to long-wavelength scattering. It leads to a new physical picture of diffraction, as tunneling through an inertial barrier.
- Received 29 April 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.1667
©1987 American Physical Society