Broadband high resolution X-ray spectral analyzer

Patent · 31 December 1997

OSTI ID:871690

Silver, Eric H ^[1]; Legros, Mark ^[1]; Madden, Norm W ^[2]; Goulding, Fred ^[3]; Landis, Don ^[4]

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1. Berkeley, CA
2. Livermore, CA
3. Lafayette, CA
4. Pinole, CA

A broad bandwidth high resolution x-ray fluorescence spectrometer has a performance that is superior in many ways to those currently available. It consists of an array of 4 large area microcalorimeters with 95% quantum efficiency at 6 keV and it produces x-ray spectra between 0.2 keV and 7 keV with an energy resolution of 7 to 10 eV. The resolution is obtained at input count rates per array element of 10 to 50 Hz in real-time, with analog pulse processing and thermal pile-up rejection. This performance cannot be matched by currently available x-ray spectrometers. The detectors are incorporated into a compact and portable cryogenic refrigerator system that is ready for use in many analytical spectroscopy applications as a tool for x-ray microanalysis or in research applications such as laboratory and astrophysical x-ray and particle spectroscopy.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5777336
• OSTI ID: 871690
• Country of Publication: United States
• Language: English

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analog
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available
bandwidth
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broad band
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cryogenic
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resolution
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spectra
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superior
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x-ray spectrometer