Abstract

The pressure dependence of the laser-induced fluorescence (LIF) spectrum of NO molecules has been investigated when NO molecues are excited by ArF excimer laser light of 193 nm. The fluorescence intensity of NO increases with increase of gas pressure, which originates from the collisional condition between the buffer gas molecules (N2) and NO molecules in the B2Π(ν'=7) state. It is pointed out that characteristics of the pressure dependence of LIF and Rayleigh scattering can be used for pressure detection.

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