ERIC Number: ED088690
Record Type: Non-Journal
Publication Date: 1972-Dec-6
Reference Count: N/A
A System for Determining Parameters of a Particle by Radiant Energy Scattering Techniques, Patent Application.
National Bureau of Standards (DOC), Washington, DC.
The system for determining parameters of a particle described in this document is a government-owned invention that is available for licensing. The background of the invention is outlined, and drawings of the system together with a detailed description of its function are provided. A collector contains a hole and annular apertures for transmitting a pair of conical, coaxial sheets of radiant energy. A beam of energy is directed through the hole, whereby a scattering volume is defined by the beam diameter and the fields of view of the apertures. When a particle moves through the volume, energy is scattered through the apertures and is detected to generate a pair of signals, each having a magnitude dependent upon the intensity of the energy in one of the conical sheets. A device responds to the magnitudes of the signals to indicate the size or nonspherical characteristics of the particle. (Author/JR)
Descriptors: College Science, Instrumentation, Inventions, Laboratory Techniques, Measurement Techniques, Patents, Physics, Radiation, Science Education, Science Equipment
National Technical Information Services, Springfield, Virginia 22151 (PB-214-202, PC-$3.00 MF-$0.95)
Publication Type: N/A
Education Level: N/A
Authoring Institution: National Bureau of Standards (DOC), Washington, DC.