螺線飛行時間型質量分析装置

概要

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In this paper a non-magnetic spiral flight type mass spectrograph is proposed. In this spectrograph, an ion beam is entered a point of radius r in a concentric cylindrical space at an angle φWith the axis and. flies along a spiral obit of radius r by relative of the balance between a centrifugal force and a centripetal force due to a static electric field. In the earlier case, we reported a spiral time-of-flight mass spectrograph in which the bunching effect in a velocity-modulated ion beam was used and an ion flight distance was stretched by the use of a solenoidal magnet.　This technique provided a reduction of a drift space. The present type, proposed in this paper, also aims at the reduction of a drift space.　Explanation for the equilibrium obit condition and several necessary problems in connection with the time-of-flight mass spectrometer are discussed.
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