J. Phys. IV France
Volume 104, March 2003
Page(s) 121 - 122

J. Phys. IV France
104 (2003) 121
DOI: 10.1051/jp4:200300042

Improved liquid jet laser-plasma source for X-ray microscopy

J. de Groot, G.A. Johansson, O. Hemberg and H.M. Hertz

Biomedical & X-Ray Physics, Royal Institute of Technology, 10691 Stockholm, Sweden

We increase the x-ray flux from a liquid-jet laser-plasma x-ray source by optimizing the target geometry. A new nozzle fabrication method allows us to produce stable microscopic liquid jets with a wide range of diameters. The improved x-ray flux is demonstrated by optimizing the diameter of an ethanol liquid-jet for our 3 ns, $\square=532$ nm Nd: YAG laser and measuring the flux at the $\square=3.37$ nm C VI emission line. Preliminary data suggest that the x-ray flux can be increased by more than a factor of 4 compared to previous experiments. The goal is to significantly reduce the exposure time of our laser-plasma-based compact x-ray microscope by improving the source.

© EDP Sciences 2003