Fast Pulse Vacuum Flashover

The recent visit of Dave Hammer from NRL gave me occasion to analyse roughly the available small sample flashover data and I thought the results might be of minor interest to others. This re-analysis has been directed towards the region of interest to tube designers and concentrated on perspex (i. e. lucite) at about 45°, where it withstands the maximum gradient. The results from different experimentalists are in reasonable agreement, after manipulation, and in agreement with the performance of the best tube designs.