Abstract
Recently many results related to PSP have been reported, but the PSP technique has been considered inadequate to be applied to low pressure range. In this study, to inspect the feasibility of PSP for measurement of pressure on a solid surface in the low density gas flows, fundamental properties of two types of PSP [PtTFPP/poly(TMSP) and PdOEP/poly(TMSP)] are examined especially in the range of pressure below 133.3 Pa (1 Torr). As an application of PSP to low density gas flows, we measure the pressure distribution on a spike surface of the Aerospike nozzle, using PtTFPP/poly(TMSP) with high pressure sensitivity over a wide range of pressure. The pressure sensitivities against nitrogen oxide are also examined for the above PSPs, to develop a technique for the simultaneous measurement of the flow field structure and the surface pressure, using NO-LIF and PSP, respectively.
