Abstract: The crosssectional energy density distribution of intense pulsed ion beam is of great significance to 　　beam characterization and application.Using infrared imaging diagnostic techniques，the crosssectional distribution 　　analysis of IPIB is achieved with high spatial and energy density resolution.With this method the measurement of the 　　beam focus and the beam transmission characteristics analysis are carried out.This diagnostics can be used to make 　　further understanding of the working principles of intense pulsed accelerator and master the basic skills in carrying 　　out diagnostics to powerful pulsed beams.

Key words: intense pulsed ion beam, infrared imaging diagnostics, crosssectional energy density distribution