FIELD: hyperboloid mass spectrometry; development of high-sensitivity and high-resolution devices of this type.;SUBSTANCE: proposed method for introducing ions to be analyzed includes introduction of ions produced beyond working space into working space of analyzer incorporated in hyperboloid mass-spectrometer of three-dimensional trap type near radial plane through one or more channels provided in circular electrode at certain angle to straight line interconnecting inlet point and center of analyzer electrode system; ions being analyzed are forced in working space of analyzer over paths whose envelopes function as circumferences by controlling angle and relative rate of introduction using relevant correlations.;EFFECT: effective capture of introduced ions enhanced by more than order of magnitude.;1 cl, 3 dwg
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