MASS SPECTROMETER AND MASS SPECTROMETRIC ANALYSIS METHOD Russian patent published in 2014 - IPC H01J49/32 

FIELD: physics.

SUBSTANCE: invention relates analysis of charged particles. The mass spectrometer comprises a chamber, an injector capable of injecting charged particles into the chamber and a field generator. The field generator is configured to generate at least one field acting on charged particles and having an angular trapping component configured to form at least one channel between the axis of rotation and the periphery of the chamber, said channel being defined by energy minima of the angular trapping component. The field generator is configured to rotate the angular trapping component about the axis of rotation, as a result of which, when using the mass spectrometer, movement of charged particles is limited by the angular trapping component in an angular direction within the at least one channel along with said angular component, as a result of which a centrifugal force acts on the charged particles. The field generated by the field generator further has a radial balancing component which monotonically increases with increasing radial distance from the axis of rotation at least in the vicinity of the at least one channel. As a result, when using the mass spectrometer, charged particles move along the at least one channel under the combined influence of the centrifugal force and the radial balancing component to form one or more particle orbits according to the charge to mass ratios of the particles. The mass spectrometer also includes a detector capable of detecting at least one of said particle orbits. Mass spectrometry methods are also disclosed.

EFFECT: simple design of a mass spectrometer and wider range of analysed particles.

33 cl, 28 dwg