Hyper-filter-fluorescer spectrometer for x-rays above 120 keV

Wang, Ching L

Title: Hyper-filter-fluorescer spectrometer for x-rays above 120 keV

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Abstract

An apparatus utilizing filter-fluorescer combinations is provided to measure short bursts of high fluence x-rays above 120 keV energy, where there are no practical absorption edges available for conventional filter-fluorescer techniques. The absorption edge of the prefilter is chosen to be less than that of the fluorescer, i.e., E.sub.PRF E.sub.F. In this way, the response function is virtually zero between E.sub.PRF and E.sub.F and well defined and enhanced in an energy band of less than 1000 keV above the 120 keV energy.

Inventors:

Wang, Ching L ^[1]

Livermore, CA

Issue Date:: 1983-01-01

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

OSTI Identifier:: 864623

Patent Number(s):: 4393512

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2223/076 - X-ray fluorescence
G01N23/223 - by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence

G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T1/36 - Measuring spectral distribution of X-rays or of nuclear radiation {spectrometry

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: hyper-filter-fluorescer; spectrometer; x-rays; 120; kev; apparatus; utilizing; filter-fluorescer; combinations; provided; measure; bursts; fluence; energy; practical; absorption; edges; available; conventional; techniques; edge; prefilter; chosen; fluorescer; prf; contrary; prior; technique; response; function; virtually; zero; defined; enhanced; band; 1000; apparatus utilizing; response function; absorption edge; energy band; kev energy; /378/

Citation Formats


                    Wang, Ching L. Hyper-filter-fluorescer spectrometer for x-rays above 120 keV.  United States: N. p., 1983. 
        Web.

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                    Wang, Ching L. Hyper-filter-fluorescer spectrometer for x-rays above 120 keV.  United States.

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                    Wang, Ching L. Sat .  
        "Hyper-filter-fluorescer spectrometer for x-rays above 120 keV".  United States.  https://www.osti.gov/servlets/purl/864623.

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@article{osti_864623,

  title        = {Hyper-filter-fluorescer spectrometer for x-rays above 120 keV},

  author       = {Wang, Ching L},

  abstractNote = {An apparatus utilizing filter-fluorescer combinations is provided to measure short bursts of high fluence x-rays above 120 keV energy, where there are no practical absorption edges available for conventional filter-fluorescer techniques. The absorption edge of the prefilter is chosen to be less than that of the fluorescer, i.e., E.sub.PRF E.sub.F. In this way, the response function is virtually zero between E.sub.PRF and E.sub.F and well defined and enhanced in an energy band of less than 1000 keV above the 120 keV energy.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1983},

  month        = {1}

}

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Hyper filter-fluorescer spectrometer for x rays above 120 keV

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