Composition analysis by scanning femtosecond laser ultraprobing (CASFLU).

Title: Composition analysis by scanning femtosecond laser ultraprobing (CASFLU).

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Abstract

The composition analysis by scanning femtosecond ultraprobing (CASFLU) technology scans a focused train of extremely short-duration, very intense laser pulses across a sample. The partially-ionized plasma ablated by each pulse is spectrometrically analyzed in real time, determining the ablated material's composition. The steering of the scanned beam thus is computer directed to either continue ablative material-removal at the same site or to successively remove nearby material for the same type of composition analysis. This invention has utility in high-speed chemical-elemental, molecular-fragment and isotopic analyses of the microstructure composition of complex objects, e.g., the oxygen isotopic compositions of large populations of single osteons in bone.

Inventors:

Ishikawa, Muriel Y ^[1]; Wood, Lowell L ^[2]; Campbell, E Michael ^[3]; Stuart, Brent C ^[1]; Perry, Michael D ^[1]

Livermore, CA
Simi Valley, CA
Danveille, CA

Issue Date:: 2002-01-01

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

OSTI Identifier:: 874556

Patent Number(s):: 6414320

Assignee:: The Regents of the University of California (Oakland, CA)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B23K26/0624 - {using ultrashort pulses, i.e. pulses of 1ns or less}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/718 - {Laser microanalysis, i.e. with formation of sample plasma}

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

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: composition; analysis; scanning; femtosecond; laser; ultraprobing; casflu; technology; scans; focused; train; extremely; short-duration; intense; pulses; sample; partially-ionized; plasma; ablated; pulse; spectrometrically; analyzed; time; determining; materials; steering; scanned; beam; computer; directed; ablative; material-removal; site; successively; remove; nearby; material; type; utility; high-speed; chemical-elemental; molecular-fragment; isotopic; analyses; microstructure; complex; oxygen; compositions; populations; single; osteons; bone; laser pulse; ionized plasma; /250/216/219/606/

Citation Formats


                    Ishikawa, Muriel Y, Wood, Lowell L, Campbell, E Michael, Stuart, Brent C, and Perry, Michael D. Composition analysis by scanning femtosecond laser ultraprobing (CASFLU)..  United States: N. p., 2002. 
        Web.

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                    Ishikawa, Muriel Y, Wood, Lowell L, Campbell, E Michael, Stuart, Brent C, & Perry, Michael D. Composition analysis by scanning femtosecond laser ultraprobing (CASFLU)..  United States.

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                    Ishikawa, Muriel Y, Wood, Lowell L, Campbell, E Michael, Stuart, Brent C, and Perry, Michael D. Tue .  
        "Composition analysis by scanning femtosecond laser ultraprobing (CASFLU).".  United States.  https://www.osti.gov/servlets/purl/874556.

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@article{osti_874556,

  title        = {Composition analysis by scanning femtosecond laser ultraprobing (CASFLU).},

  author       = {Ishikawa, Muriel Y and Wood, Lowell L and Campbell, E Michael and Stuart, Brent C and Perry, Michael D},

  abstractNote = {The composition analysis by scanning femtosecond ultraprobing (CASFLU) technology scans a focused train of extremely short-duration, very intense laser pulses across a sample. The partially-ionized plasma ablated by each pulse is spectrometrically analyzed in real time, determining the ablated material's composition. The steering of the scanned beam thus is computer directed to either continue ablative material-removal at the same site or to successively remove nearby material for the same type of composition analysis. This invention has utility in high-speed chemical-elemental, molecular-fragment and isotopic analyses of the microstructure composition of complex objects, e.g., the oxygen isotopic compositions of large populations of single osteons in bone.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2002},

  month        = {1}

}

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