Laser detection of nuclear spin isomers of ethylene molecules

We report the making of a double-beam laser spectrometer to measure absorption spectra in the ν5 + ν9 combination vibrational band of ethylene in the region of λ = 1.6 μm. The spectrometer is used to find a portion of the spectrum that has well-resolved absorption lines of all four nuclear spin isom...

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Bibliographic Details
Published inQuantum electronics (Woodbury, N.Y.) Vol. 49; no. 7; pp. 623 - 627
Main Author Chapovsky, P.L.
Format Journal Article
LanguageEnglish
Published Bristol Kvantovaya Elektronika, Turpion Ltd and IOP Publishing 01.07.2019
IOP Publishing
Subjects
ABSORPTION
ABSORPTION SPECTRA
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DETECTION
ETHYLENE
ISOMERS
Laser beams
laser spectroscopy
LASERS
MOLECULES
NUCLEAR PHYSICS AND RADIATION PHYSICS
Nuclear spin
nuclear spin isomers of molecules
QUANTUM NUMBERS
SPECTROMETERS
spectroscopy of ethylene molecules
SPIN
VIBRATIONAL STATES
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Summary:We report the making of a double-beam laser spectrometer to measure absorption spectra in the ν5 + ν9 combination vibrational band of ethylene in the region of λ = 1.6 μm. The spectrometer is used to find a portion of the spectrum that has well-resolved absorption lines of all four nuclear spin isomers of ethylene molecules. The rotational quantum numbers of these absorption lines and the nuclear spin isomers of ethylene molecules responsible for them are identified.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16918