AI Article Synopsis
- Researchers investigated a low-pass filter using a microchannel plate (MCP) with small square channels to effectively transmit soft x rays.
- The MCP demonstrated excellent bandpass effects below 1.5 keV, achieving a narrower energy bandwidth of 100 eV when combined with filters.
- This method offers a simpler and more compact alternative to traditional planar mirror bandpass filters, making it easier to align in low-resolution spectrometer applications for soft x rays.
Article Abstract
A type of low-pass filter devices for soft x rays is investigated by using a microchannel plate (MCP) of small channels 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. For low-resolution spectrometer applications of soft x rays, this method allows the monochromator to be replaced by a simple MCP filter and therefore significantly reduces alignment complexity in experiments.
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| http://dx.doi.org/10.1364/OL.38.001509 | DOI Listing |
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