Velocity Modulation Type Mass Spectrograph

A non-magnetic velocity modulation type mass spectrograph is proposed, in which the bunching effect of the velocity-modulated ion beams is applied as R.R. Wilson had published in his report on the Isotron. While the Isotron handles a bunch of an isotope formed at a definite position in space, in the present paper the problems on the recording of the mass spectrum consisting of the spatially distributed bunches are discussed. The neces sary applied voltages, frequencies, and geometrical. dimensions for practical uses are also calculated.