| Abstract: | The method of contour integration is used for solving the problem of transition radiation of elastic waves by a mass source,
which travels uniformly in a gas normal to the interface between homogeneous gaseous and elastic halfspaces and disappears
at the time it touches the solid surface. We have obtained asymptotic formulas for the field of transition radiation, which
hold true near the fronts of longitudinal and transverse spherical waves and a conical wave. An exact analytical expression
for the field of transition radiation has been obtained for the observation points located on the source trajectory extension
in a solid. The influence of interaction between longitudinal and transverse waves, which occurs on the surface of elastic
medium, on the space distribution of the field of transition radiation is analyzed.
Radiophysical Research Institute, Nizhny Novgorod, Russia. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika,
Vol. 40, No. 10, pp. 1210–1223, October, 1997. |
