Apparatus and method for detection and characterization of particles using light scattered therefrom

Title: Apparatus and method for detection and characterization of particles using light scattered therefrom

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Abstract

Apparatus and method for detection and characterization of particles using light scattered therefrom. Differential phase measurements on scattered light from particles are possible using the two-frequency Zeeman effect laser which emits two frequencies of radiation 250 kHz apart. Excellent discrimination and reproducibility for various pure pollen and bacterial samples in suspension have been observed with a single polarization element. Additionally, a 250 kHz beat frequency was recorded from an individual particle traversing the focused output from the laser in a flow cytometer. 13 figs.

Inventors:: Johnston, R.G.

Issue Date:: 1987-03-23

Research Org.:: Los Alamos National Lab., NM (USA)

OSTI Identifier:: 7092905

Patent Number(s):: -US-A6028987

Assignee:: TIC; ERA-14-001884; EDB-88-187398

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Resource Relation:: Other Information: Portions of this document are illegible in microfiche products

Country of Publication:: United States

Language:: English

Subject:: 59 BASIC BIOLOGICAL SCIENCES; 47 OTHER INSTRUMENTATION; LASERS; PARTICLE DISCRIMINATION; BACTERIA; CYTOLOGY; DESIGN; INVENTIONS; POLLEN; BIOLOGY; GAMETES; GERM CELLS; MICROORGANISMS; PARTICLE IDENTIFICATION; 550700* - Microbiology; 440400 - Well Logging Instrumentation

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                    Johnston, R.G. Apparatus and method for detection and characterization of particles using light scattered therefrom.  United States: N. p., 1987. 
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                    Johnston, R.G. Apparatus and method for detection and characterization of particles using light scattered therefrom.  United States.

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                    Johnston, R.G. Mon .  
        "Apparatus and method for detection and characterization of particles using light scattered therefrom".  United States.

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@article{osti_7092905,

  title        = {Apparatus and method for detection and characterization of particles using light scattered therefrom},

  author       = {Johnston, R.G.},

  abstractNote = {Apparatus and method for detection and characterization of particles using light scattered therefrom. Differential phase measurements on scattered light from particles are possible using the two-frequency Zeeman effect laser which emits two frequencies of radiation 250 kHz apart. Excellent discrimination and reproducibility for various pure pollen and bacterial samples in suspension have been observed with a single polarization element. Additionally, a 250 kHz beat frequency was recorded from an individual particle traversing the focused output from the laser in a flow cytometer. 13 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1987},

  month        = {3}

}

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