Ｐroperty of laser-induced shockwave with confinement

The paper describes the experiment on shocking aluminum plates of different shapes with shortlypulsed high power laser beams under confinement structure and the effect of confinement and black paint .It is found that the induced pressure is much more huge than that produced in nonconfining case,though it's inferior to it's forecasted value.Within the research range,black coating plays the surface-protecting role more effectively than enhances the absorption of laser,while superfluous coating will decrease the induced pressure significantly.Convex Al plates were also shocked with the confinement of plane glass,and the plane glass's confinement is still effective as long as the plate's circumflexion radius is greater than 400mm.