Infrared imaging diagnostics of the energy density distribution at the intense pulsed ion beam cross-section

One of the most important parameters of the intense pulsed ion beam (IPIB) is the distribution of the energy density at the cross section. Aiming to solve the problem of traditional diagnostic methods for beam energy density, we measured the temperature distribution of the reverse side of target by infrared camera to develop the infrared diagnostic techniques of IPIB energy density distribution. For IPIB of energy density about 1 J/cm² and pulse width about 100 ns, the error using this method is less than 5% and the spatial resolution achieves 1-2 mm. The method has the advantages of easy operation and low cost, it is an efficient prompt monitoring method for the IPIB energy density distribution. (authors)