The development of x-ray absorption spectroscopy (XAS) for the study of volatile liquid surfaces using microjets was discussed. The design and implementation of x-ray experiment based on the use of liquid microjets were described. The experiments characterizing the temperature of liquid water and methanol streams injected into high vacuum through microjet nozzles were analyzed. It was shown that the application of high-vacuum XAS techniques to liquid microjets allows a particular class of measurements to be performed on volatile liquid surfaces without significant interference from the equilibrium vapor.
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