Abstract

An optical–optical double resonance technique using a multiphoton ionization detection scheme is employed to study the disalignment (collisional redistribution of MJ levels) of state selected NO A 2Σ+ (v′=0, J′= 4 1/2) upon collisions with Xe, N2, NO, CO2, and CHF3. Cross sections for MJ -changing collisions are estimated from two-color polarization measurements as a function of the pressure of the perturbing gas.

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