Development of an apparatus for characterization of cluster-gas targets

Jinno, Satoshi   ; Fukuda, Yuji; Sakaki, Hironao; Yogo, Akifumi; Kanasaki, Masato; Kondo, Kiminori; Faenov, A. Ya.*; Skobelev, I. Yu.*; Pikuz, T.; Boldarev, A. S.*; Gasilov, V. A.*

In the laser drive ion acceleration using cluster-gas targets, the three-step conical nozzle specially designed based on the Boldarev's model is used to prepare the large-sized clusters. In the present work, the target diagnosis apparatus applying Mie scattering and interferometry has been developed to investigate the ion acceleration mechanism and search the optimal condition. The sub-micron sized CO clusters were verified by measuring the angular distribution of the scattering light from the gas jet of the mixture gas of CO(30%) and H(70%). Moreover, the gas density was obtained by the interferometry.