Apparatus and method for detection and characterization of particles using light scattered therefrom
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:
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 7092905
- Patent Number(s):
- 6028987
- Assignee:
- TIC; ERA-14-001884; EDB-88-187398
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
- 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
Citation Formats
Johnston, R G. Apparatus and method for detection and characterization of particles using light scattered therefrom. United States: N. p., 1987.
Web.
Johnston, R G. Apparatus and method for detection and characterization of particles using light scattered therefrom. United States.
Johnston, R G. Mon .
"Apparatus and method for detection and characterization of particles using light scattered therefrom". United States.
@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}
}