Abstract
In order to obtain an exact shock transition angle from Mach reflection to regular reflection, an effectt of a boundary laser should he considered. For that purpose. we have conducted the experimental research on the shock wave reflection over the liquid surface, since the boundary condition at liquid surfaoe is different from that of the rigid surface. The shock wave reflection was visualized by using a double exposure holographic interferometryi and the shock transition angle was obtained from the interferograms. The present transition angle is closer to the I.henritical angle than the case of the rigid wall.
