Abstract
The present study has been carried out with the aim of developing a technique for measuring two-dimensional gas temperature profiles based on two-color fluorescence induced by a one-color laser. The laser sheet of the fourth harmonic (266nm) from a Nd:YAG laser induced fluorescence of naphthalene doped in a nitrogen gas flow. The dependence of LIF intensity of naphthalene on temperature largely depends on wavelength. Thus, it is shown that the gas temperature is able to be determined by the ratio of LIF intensities at 320nm and 380nm.
