科研之友
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摘要
A narrowband x ray imager for the Cu K-alpha line at similar to 8 keV using a spherically bent quartz crystal has been implemented on the OMEGA EP laser at the University of Rochester. The quartz crystal is cut along the 2131 (211) planes for a 2d spacing of 0.3082 nm, resulting in a Bragg angle of 88.7 degrees, very close to normal incidence. An optical system is used to remotely align the spherical crystal without breaking the vacuum of the target chamber. The images show a high signal-to-background ratio of typically >100:1 with laser energies >= 1 kJ at a 10-ps pulse duration and a spatial resolution of less than 10 mu m.
- 出版日期2012-3
