On the adge field effect of a quadrupole mass spectrometer on a charged particle beam

Functional parameter dependences of charged particle beam transport in the edge field of a quadrupole mass spectrometer on the parameters of the spectrometer and the potential are presented, making an assumption of linear potential change in the direction parallel to the spectrometer electrodes. Obtained are: inequality, convenient for the passage through the edge field of ion beams with point source vertex and axis of symmetry, parallel to the spectrometer electrodes; inequality, giving the upper bound of maximal ion approach to the spectrometer electrodes in the edge field; inequality, estimating the maximum value of charged particle velocity on a plane, being perpendicular to the spectrometer electrodes at the particle passage through the edge field. The inequalities obtained have been determined the relationships among the ion beam, the spectrometer and the edge field parameters