The 4th International Conference on Matter and Radiation at Extremes (ICMRE 2019)

413 / 2019-02-28 21:20:22

A novel transmission-type X-ray low-pass filter and its application in ICF diagnose

Bandpass filter,X-ray imaging,ICF diagnose

Plenary track > Laser and Particle Beam Fusion

A novel transmission-type low-pass filter for soft x rays is propesed and investigated by using a microchannel plate (MCP) with square cross section. The measured transmission spectra on the Beijing Synchrotron Radiation Facility showed that the MCP has excellent bandpass effects below 1.5 keV by grazing incidence and internal multireflections. Combined with filters, the MCP energy bandwidth can be narrowed to 100 eV. In contrast to bandpass made of planar mirrors, the MCP has a much smaller size and better bandpass effects, and can be easily extended to high energy ranges. The novel X-ray filter has been utilized for diagnose of ICF physics， we also show the preliminary application results in this report.