FIELD: mass spectrometry. SUBSTANCE: invention can find use in development of devices with high efficiency of containment of charged particles in working space of analyzer. According to proposed technique for analysis of charged particles in hyperboloid mass spectrometer charge particles with chosen specific charge are compressed to center of electron system or to its symmetry axis by way of selection of phase of injection of particles into electric field and field parameters under which selected particles travel along base trajectories in time of containment. EFFECT: increased signal-to-noise ratio and substantially improved analytical characteristics of device for realization of technique. 1 dwg
