抄録
This paper mainly describes results of visualization of shocks diffracting over a wedge in argon. When the wedge angle θw is small enough to cause MR, the effects of viscosity and heat conductivity delay its appearance and the trajectory of its triple point is initially curved; it eventually becomes straight as the MR evolves into a self-similar system. The dynamic transition from MR to RR occurs at or close to the ideal gas detachment criterion θe. With increasing θw, the delay in the onset of MR is increased as the dynamic process slows.
