Adaptation of an ion accelerator to a high voltage electron microscope

Abstract
The adaptation of a gas-source 200 kV ion accelerator to a 500 kV electron microscope was discussed as a means of simulating the CTR environment. The simultaneous accelerator microscope irradiation (SAMI) capability was demonstrated. Ion current densities of up to one milliamp/cm2 and electron current densities near several amp/cm2 are possible with the above system. In situ observations of blister and precipitate formation in 304 stainless steel at about 650°C were reported for 60 kV helium ion bombardment to a fluence of 3 × 1019 ions cm−2.