Photophoretic spectrometer

Stephen Arnold; Yaquob Amani; Albert Orenstein

doi:10.1063/1.1136395

Photophoretic spectrometer

Stephen Arnold, Yaquob Amani, Albert Orenstein

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Pages (from-to)	1202-1204
Number of pages	3
Journal	Review of Scientific Instruments
Volume	51
Issue number	9
DOIs	https://doi.org/10.1063/1.1136395
State	Published - 1980

ASJC Scopus subject areas

Instrumentation

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title = "Photophoretic spectrometer",

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.",

author = "Stephen Arnold and Yaquob Amani and Albert Orenstein",

year = "1980",

doi = "10.1063/1.1136395",

language = "English (US)",

volume = "51",

pages = "1202--1204",

journal = "Review of Scientific Instruments",

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publisher = "American Institute of Physics Publising LLC",

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AU - Arnold, Stephen

AU - Amani, Yaquob

AU - Orenstein, Albert

PY - 1980

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AB - 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.

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