title: Nonintrusive optical single-particle counter for measuring the size and velocity of droplets in a spray.
abstract: A technique for measuring nonintrusively, and in real time, the size and velocity of droplets in a spray is presented. A small beam identifies the center of a larger beam, thus defining a region of almost uniform intensity, and only droplets crossing through such a center are measured. The size is obtained from the absolute scattered light and the velocity from the modulated signal produced by the interferometric pattern. A self-calibrating algorithm is also discussed. Results are presented for a spray of predictable characteristics.
authors.affiliation: Spectron Development Laboratories, Inc., 3303 Harbor Boulevard, Costa Mesa, California 92626, USA.
authors.forename: C F
authors.initials: CF
authors.lastname: Hess