An UV-visible spectrophotometer provided with a photon counting system for the studies of very weak absorption spectra.
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概要
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An ultrasensitive UV-visible spectrophotometer, of a single-beam type provided with a photon counting system having a time resolution of 10 ns has been constructed. It has been shown that absorption spectra can be measured to within an error of 10<SUP>−5</SUP> in optical density with this instrument. Noise levels, measured as a function of the photon count numbers, are found to agree with the theoretically expected statistical fluctuation of the photons. Absorption spectra of thin naphthacene films, 32 nra or below in thicknesses, deposited on a quartz plate, were obtained with this instrument, and found to change with the film thickness.
- 公益社団法人 日本化学会の論文
著者
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Yamamoto Naoto
Department Of Chemistry Faculty Of Engineering Science Osaka University
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Sawada Takanori
Department Of Anesthesiology Osaka University Faculty Of Dentistry
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Tsubomura Hiroshi
Department of Applied Chemistry, Faculty of Engineering, Osaka University
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Sawada Takanori
Department of Chemistry, Faculty of Engineering Science, Osaka University
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