Composition of a water vapor-argon mixture determined by the mass spectrometry of a supersonic molecular beam

It is found that the composition of a pulsed supersonic molecular beam depends on the preparation conditions of the initial mixture containing water molecules and argon atoms. The mass spectra of the molecular beam components are obtained, and the time evolution of the signal intensities for some of the ions (T form) is traced. It is shown that stable water complexes remaining intact during supersonic flow of the mixture into a vacuum may form depending on the water partial pressure.