Rotating-frame level matching study of CH3 tunneling in solid propionic acid

Changho Choi, M. M. Pintar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A study in the proton spin-rotating frame of the Zeeman-tunneling level matching of strongly hindered palmetic acid rotators CH3 is reported. A set of consecutive spin-torsional matching resonances was employed to saturate the tunneling polarization. The observed tunneling saturation rate as a function of the rotating magnetic field strength gave a well-defined resonance peak when the Zeeman splitting was equal to one-half of the tunneling frequency. This peak defines the tunneling frequency accurately. At this resonance a bimodal process of polarization transfer occurs; a fast one driven by the intra-CH3 proton-proton dipolar interaction and a slow one driven by the inter-CH3 dipolar interaction.

Original languageEnglish (US)
Pages (from-to)5542-5546
Number of pages5
JournalJournal of Chemical Physics
Volume109
Issue number13
DOIs
StatePublished - 1998

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propionic acid
Protons
Polarization
protons
Magnetic fields
polarization
Acids
field strength
interactions
saturation
acids
magnetic fields

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Rotating-frame level matching study of CH3 tunneling in solid propionic acid. / Choi, Changho; Pintar, M. M.

In: Journal of Chemical Physics, Vol. 109, No. 13, 1998, p. 5542-5546.

Research output: Contribution to journalArticle

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