Abstract
We report two-dimensional near-field imaging experiments of the 11.9-nm Sn X-ray laser that were performed with a set of novel Mo/Y multilayer mirrors having reflectivities of up to ∼40% at normal and at 45° incidence. Second-moment analysis of the X-ray laser emission was used to determine values of the X-ray beam propagation factor M2 for a range of irradiation parameters. The results reveal a reduction of M2 with increasing prepulse intensity. The spatial size of the output is a factor of ∼2 smaller than previously measured for the 14.7-nm Pd X-ray laser, while the distance of the X-ray emission with respect to the target surface remains roughly the same .
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Staub, F., Braud, M., Balmer, J. et al. Simultaneous imaging of the near- and far-field intensity distributions of the Ni-like Sn X-ray laser. Appl Phys B 78, 971–974 (2004). https://doi.org/10.1007/s00340-004-1431-8
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DOI: https://doi.org/10.1007/s00340-004-1431-8