Molecular iodine absolute frequencies. Final report | Zendy

Craig J. Sansonetti | Zendy

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Molecular iodine absolute frequencies. Final report

Author(s) -

Craig J. Sansonetti

Publication year - 1990

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/371207

Subject(s) - hyperfine structure , line (geometry) , doppler effect , spectroscopy , absolute (philosophy) , component (thermodynamics) , optics , fabry–pérot interferometer , physics , spectral line , laser , atomic physics , mathematics , philosophy , geometry , epistemology , quantum mechanics , astronomy , thermodynamics

Fifty specified lines of {sup 127}I{sub 2} were studied by Doppler-free frequency modulation spectroscopy. For each line the classification of the molecular transition was determined, hyperfine components were identified, and one well-resolved component was selected for precise determination of its absolute frequency. In 3 cases, a nearby alternate line was selected for measurement because no well-resolved component was found for the specified line. Absolute frequency determinations were made with an estimated uncertainty of 1.1 MHz by locking a dye laser to the selected hyperfine component and measuring its wave number with a high-precision Fabry-Perot wavemeter. For each line results of the absolute measurement, the line classification, and a Doppler-free spectrum are given

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