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

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:
Issue Date:
OSTI Identifier:
7092905
Assignee:
TIC; ERA-14-001884; EDB-88-187398
Patent Number(s):
PATENTS-US-A6028987
Contract Number:
W-7405-ENG-36
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Research Org:
Los Alamos National Lab., NM (USA)
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