Abstract

A means for obtaining broadband photophoretic spectra is described. The sensitivity of the technique is found in accordance with radiometric theory to increase markedly with pressure reduction below 1 atm. Noise oscillation induced by radiometric torques is contained through the use of electronic damping. The first broadband spectrum on a single crystallite (~5 μm) of CdS is presented.

© 1980 Optical Society of America

Comprehensive model of the photophoretic force on a spherical microparticle

A. B. Pluchino and S. Arnold
Opt. Lett. 10(6) 261-263 (1985)

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Photophoretic force on aerosol particles in the free-molecule regime

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