Аннотация:The possibility of separating the vibrational and translational temperatures from each other bydisturbing the Maxwellian velocity distribution in the far energy region is discussed for a systemconsisting of a small admixture of heavy diatomic molecules (harmonic oscillators constituting asmall impurity in a light gas). It is shown that a fast-particle source which produces particles with high enough energies is capable of producing a finite deviation of the vibrational temperature from the translational temperature.