Studies on the charge transfer cross sections for fast ions by means of double focusing mass spectrograph.

Abstract

An experimental method was developed in which not only the initial ions and the charge transfer ions but also the neutral products of collision processes can be detected simultaneously on the photographic plates in a double focusing mass spectrograph. The relative cross sections for charge transfer process have been measured for Fe⁺, Fe²⁺, Fe³⁺, Fe⁴⁺, and Fe⁵⁺ moving through argon in the colliion chamber with the velocities corresponding to accelerating potential 13000 volts. The relative cross section values depend upon the heat of reaction, Fe^j++Ar^o=Fe^(j-1)++Ar⁺+ΔE, and fast neutral iron atoms were detected on the photographic plate, Ilford Q2, in the “camera”.