Small particle characteristic determination

Details Small particle characteristic determination Small particle characteristic determination

G - Physics

01

N

G01N 15/00 (2006.01) G01N 15/02 (2006.01) G01N 15/14 (2006.01) G01N 21/47 (2006.01) G01N 21/63 (2006.01) G01N 21/39 (2006.01)

Patent

CA 2217612

Small particle identification is disclosed. A high intensity light source provides light at a sensing region for contact with small particles at the sensing region to cause resulting light that includes scattered light and emitted light due to heating of optically absorbing particles to incandescence with the resulting light terminating if vaporization of the optically absorbing particles occurs. A laser, having a laser cavity with the sensing region within the laser cavity, preferably provides high intensity laser light in the laser cavity for contact with the small particles at the sensing region. Utilizing optical detection, predetermined particle characteristic determination is enabled, including particle size and composition of optically absorbing particles.

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