In the TRIM window (the one that shows the cascade of moving atoms) there is a window, normally on the left of the screen, labelled Plots, below that is a sub box labelled "DISTRIBUTIONS" with purple an grey stripes. If you push the button labelled "F" next to the "Ion/Recoil Distribution" label it will open a dialogue box for you to create a file to put the ion data into. Every time you push that "F" button it will update the file...