Measurement of hyperfine structure in CH2F2 by beam maser spectroscopy

S. G. Kukolich; J. H.S. Wang; D. J. Ruben

doi:10.1063/1.1679168

Measurement of hyperfine structure in CH₂F2 by beam maser spectroscopy

S. G. Kukolich, J. H.S. Wang, D. J. Ruben

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Abstract

High resolution measurements of hyperfine structure on the 303->2 ₁₂, 423->514, 523->616, and 61S->524 rotational transitions in CH₂F₂ were made using a molecular beam maser spectrometer. The components of the fluorine spin-rotation tensor obtained from the data are M_aa (F)= -20.4±1.0 kHz, M_bb (F)= -4.9±0.5 kHz, and M_cc (F)= -13.1±0.5 kHz. Components of the hydrogen spin-rotation tensor are M_aa (H) = 6.5±3.0 kHz, M_bb (H)= 1.0±1.4 kHz, and MK (H) = 0.3±1.3 kHz. Precise values for the rotational transition frequencies are also reported. Relations between the spin-rotation tensor and the magnetic shielding tensor for CH ₂F₂ are discussed. Combining the experimental spin-rotation tensor with the diamagnetic shielding tensor from the atom-dipole model, leads to the determination of the magnetic shielding tensor a _aa= 407 ppm, a_bb, = 390 ppm, o_cc = 217 ppm, and a_Av = 338 ppm.

Original language	English (US)
Pages (from-to)	5474-5478
Number of pages	5
Journal	The Journal of chemical physics
DOIs	https://doi.org/10.1063/1.1679168
State	Published - 1973
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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@article{f31684ba843743af8df8681244cda984,

title = "Measurement of hyperfine structure in CH2F2 by beam maser spectroscopy",

abstract = "High resolution measurements of hyperfine structure on the 303->2 12, 423->514, 523->616, and 61S->524 rotational transitions in CH2F2 were made using a molecular beam maser spectrometer. The components of the fluorine spin-rotation tensor obtained from the data are Maa (F)= -20.4±1.0 kHz, Mbb (F)= -4.9±0.5 kHz, and Mcc (F)= -13.1±0.5 kHz. Components of the hydrogen spin-rotation tensor are Maa (H) = 6.5±3.0 kHz, Mbb (H)= 1.0±1.4 kHz, and MK (H) = 0.3±1.3 kHz. Precise values for the rotational transition frequencies are also reported. Relations between the spin-rotation tensor and the magnetic shielding tensor for CH 2F2 are discussed. Combining the experimental spin-rotation tensor with the diamagnetic shielding tensor from the atom-dipole model, leads to the determination of the magnetic shielding tensor a aa= 407 ppm, abb, = 390 ppm, occ = 217 ppm, and aAv = 338 ppm.",

author = "Kukolich, {S. G.} and Wang, {J. H.S.} and Ruben, {D. J.}",

year = "1973",

doi = "10.1063/1.1679168",

language = "English (US)",

pages = "5474--5478",

journal = "The Journal of chemical physics",

issn = "0021-9606",

publisher = "American Institute of Physics Publising LLC",

}

TY - JOUR

T1 - Measurement of hyperfine structure in CH2F2 by beam maser spectroscopy

AU - Kukolich, S. G.

AU - Wang, J. H.S.

AU - Ruben, D. J.

PY - 1973

Y1 - 1973

N2 - High resolution measurements of hyperfine structure on the 303->2 12, 423->514, 523->616, and 61S->524 rotational transitions in CH2F2 were made using a molecular beam maser spectrometer. The components of the fluorine spin-rotation tensor obtained from the data are Maa (F)= -20.4±1.0 kHz, Mbb (F)= -4.9±0.5 kHz, and Mcc (F)= -13.1±0.5 kHz. Components of the hydrogen spin-rotation tensor are Maa (H) = 6.5±3.0 kHz, Mbb (H)= 1.0±1.4 kHz, and MK (H) = 0.3±1.3 kHz. Precise values for the rotational transition frequencies are also reported. Relations between the spin-rotation tensor and the magnetic shielding tensor for CH 2F2 are discussed. Combining the experimental spin-rotation tensor with the diamagnetic shielding tensor from the atom-dipole model, leads to the determination of the magnetic shielding tensor a aa= 407 ppm, abb, = 390 ppm, occ = 217 ppm, and aAv = 338 ppm.

AB - High resolution measurements of hyperfine structure on the 303->2 12, 423->514, 523->616, and 61S->524 rotational transitions in CH2F2 were made using a molecular beam maser spectrometer. The components of the fluorine spin-rotation tensor obtained from the data are Maa (F)= -20.4±1.0 kHz, Mbb (F)= -4.9±0.5 kHz, and Mcc (F)= -13.1±0.5 kHz. Components of the hydrogen spin-rotation tensor are Maa (H) = 6.5±3.0 kHz, Mbb (H)= 1.0±1.4 kHz, and MK (H) = 0.3±1.3 kHz. Precise values for the rotational transition frequencies are also reported. Relations between the spin-rotation tensor and the magnetic shielding tensor for CH 2F2 are discussed. Combining the experimental spin-rotation tensor with the diamagnetic shielding tensor from the atom-dipole model, leads to the determination of the magnetic shielding tensor a aa= 407 ppm, abb, = 390 ppm, occ = 217 ppm, and aAv = 338 ppm.

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DO - 10.1063/1.1679168

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JO - The Journal of chemical physics

JF - The Journal of chemical physics

ER -

Measurement of hyperfine structure in CH₂F2 by beam maser spectroscopy

Abstract

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