Joint Experiments on X‐ray/Particle Emission from Plasmas Produced by Laser Irradiating Nano Structured Targets

The 1st Joint (Host Laboratory) Experiment on laser plasma involving more than twenty scientists from eight countries has been carried out at the Laser and New Materials Laboratory, Faculty of Science, Cairo University, Egypt. It was co‐ordinated by the International Atomic Energy Agency (IAEA) and supported through the IAEA and the ICTP (International Centre for Theoretical Physics, Trieste). The main experimental programme was aimed at characterising the possible enhancement of x‐ray and particle emission from plasmas produced by laser incidence on nano‐structured targets. Laser beams at 1.064 μm of 250 mJ and 532 nm of 165 mJ focused at the target surface using a nanosecond laser type Quantel were used in the present study. In the present experiments nano‐copper structures evaporated onto copper bulk disks and nano‐gold structures evaporated onto gold ones were used. The thickness of the nano‐materials on their bulk material was 1 μm. An ion collector and x‐ray semiconductor diode were used to study th...