Abstract
Structures of weak shock waves reflected from various models in carbon dioxide are observed by using a Mach-Zehnder Interferometer, whose light source is a pulsed nitrogen laser (wave length 337.1 nm). Shock waves of the equilibrium shock Mach number of 1.015-1.097 are generated for initial pressure of about 2 atm in a shock tube of 40×40 mm 2 cross section. The observed structures of fully and partly dispersed waves due to vibrational relaxation of carbon dioxide, reflected from a porous wall, a hemicylinder or an inclined plate, exhibit the 'nonstationary effect' and the 'N-wave effect', which are common phenomena for weak waves in dissipative and dispersive media.
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