Three-dimensional characterization of high-density non-cylindrical pulsed gas jets

We report a full characterization of the three-dimensional density profile of non-cylindrical and cylindrical high-density pulsed gas jets by using a double orthogonal Mach-Zehnder interferometer. A simultaneous algebraic rec onstitution technique (SART) algorithm was fully implemented for data inver sion, thus constituting a novel approach to the current methods of inversio n employed in this area. Also characterized is the collision of two jets pr oduced by rectangular nozzles never to our knowledge reported before in the literature. Results obtained point to densities eight to twelve times larg er than the sum of that of each separate jet, rendering this configuration extremely useful in laser-plasma interaction experiments, where higher dens ities are required, with no need to increase backing pressure. A theoretica l model describing the density profiles obtained for the non-cylindrical je ts is presented, and the results obtained are discussed.