Photophoretic spectrometer

Stephen Arnold, Yaquob Amani, Albert Orenstein

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)1202-1204
Number of pages3
JournalReview of Scientific Instruments
Volume51
Issue number9
DOIs
StatePublished - 1980

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Spectrometers
Vacuum
spectrometers
pressure dependence
chambers
vacuum
configurations

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Instrumentation

Cite this

Photophoretic spectrometer. / Arnold, Stephen; Amani, Yaquob; Orenstein, Albert.

In: Review of Scientific Instruments, Vol. 51, No. 9, 1980, p. 1202-1204.

Research output: Contribution to journalArticle

Arnold, S, Amani, Y & Orenstein, A 1980, 'Photophoretic spectrometer', Review of Scientific Instruments, vol. 51, no. 9, pp. 1202-1204. https://doi.org/10.1063/1.1136395
Arnold, Stephen ; Amani, Yaquob ; Orenstein, Albert. / Photophoretic spectrometer. In: Review of Scientific Instruments. 1980 ; Vol. 51, No. 9. pp. 1202-1204.
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