中性粒子の質量および運動エネルギースペクトルと高分解能収束性飛行時間分析装置

概要

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It is well recognized that the charge exchange reaction in the atomic and molecular collision plays an important role in many physical phenomena including chemical reactions. Since the early stage of mass spectroscopy, the charge transfer signals have been reported often. A new time-of-flight analyzer is developed for the determination of the mass, the kinetic energy, and the very small scattering angle difference of the product neutral particles in charge exchange collision processes. The analyzer is essentially the Mattauch-Herzog type double focusing mass spectrograph combined with a straight path tube for the fast neutrals. Experimental results of doubly differential cross sections for Ar+-Ar collision system revealed the new TOF analyzer is promising. The effects of the sweeping field on the ion packet length, the energy spread, and the direction divergency were studied, and the triple focusing conditions were obtained for a new high resolution TOF analyzer with a sector type toroidal electric field. The focusing TOF analyzer was installed, and the time resolution of the analyzer is expected to be 36,000.
日本質量分析学会の論文