Improvement of performances analytical quadrupole mass-analyzer performances in operation with low energy ions without prefilters use

Possibility of improvement of, resolving ability and ion peak form is discussed in operation of a quadrupole mass-analyzer with low energy ions without prefilter application use. It was experimentally shown, that this is achieved by the increase under the certain law of velocity of ions input into the regional field inlet of a mass-analyzer with maintenance of ion initial working velocity in the mass-analyzer. Thus, for ions with mass 502 а.е.m. with the working energy 5 eV at the expense of these ions velocity rate input into the analyzer regional field approximately 2.5 times in comparison with working velocity the improvement of sensitivity made 360 % with maintenance of initial resolving ability, or resolving ability improvement approximately 2 times at maintenance of initial sensitivity with simultaneous improvement of ion peak shape in mass spectrums.