Particle analyzing method and apparatus
Abstract
The rapid chemical analysis of particles in aerosols can be accomplished using an apparatus which produces a controlled stream of individual particles from an environment, and another apparatus which vaporizes and ionizes the particles moving in free flight, for analysis by a mass spectrometer. The device for producing the stream of particles includes a capillary tube through which the air with suspended particles moves, a skimmer with a small opening spaced from an end of the capillary tube to receive particles passing through the tube, and a vacuum pump which removes air from between the tube and skimmer and creates an inflow of air and particles through the tube. The particles passing through the skimmer opening can be simultaneously vaporized and ionized while in free flight, by a laser beam of sufficient intensity that is directed across the path of the free flying particles.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- November 1980
- Bibcode:
- 1980nasa.reptX....S
- Keywords:
-
- Aerosols;
- Chemical Analysis;
- Ionizers;
- Mass Spectroscopy;
- Particulate Sampling;
- Vaporizers;
- Continuous Wave Lasers;
- Free Flight;
- Laser Applications;
- Patents;
- Pipes (Tubes);
- Pulsed Lasers;
- Vacuum Pumps;
- Vaporizing;
- Instrumentation and Photography