Photophoretic spectrometer
- 1 September 1980
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 51 (9) , 1202-1204
- https://doi.org/10.1063/1.1136395
Abstract
An instrument is described which measures the spectral dependence of the radiometric (photophoretic) force on a micron-sized particle in a static configuration. This spectrometer consists of a servo-stabilized Millikan chamber which can be used as a photophoretic balance over the spectral range from 200 nm to 1000 nm. Spectra may be taken in a vacuum as small as 10−4 torr. The action spectrum of the photophoretic force on a crystallite of CdS is used as an example. The pressure dependence of the force at 500 nm is consistant with a radiometric mechanism.Keywords
This publication has 13 references indexed in Scilit:
- Broadband photophoretic spectroscopyOptics Letters, 1980
- Determination of particle mass and charge by one electron differentialsJournal of Aerosol Science, 1979
- Photophoretic spectroscopyChemical Physics Letters, 1979
- Photophoresis of absorbing particlesJournal of Colloid and Interface Science, 1977
- Low Knudsen number photophoresisJournal of Aerosol Science, 1977
- Feedback stabilization of optically levitated particlesApplied Physics Letters, 1977
- Experiments on photophoresis and thermophoresisJournal of Colloid and Interface Science, 1975
- A new instrument for the study of individual aerosol particlesJournal of Colloid and Interface Science, 1972
- Photophoresis and the descent of particles into the lower stratosphereJournal of Geophysical Research, 1967
- A Determination of Avogadro's Constantfrom Measurements of the Brownian Movements of Small Oil Drops Suspended in AirPhysical Review B, 1914