Molecular beam maser measurements of relaxation cross sections in NH3

Stephen G Kukolich, J. H S Wang, D. E. Oates

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Direct measurements of scattering cross sections for NH3 in well-defined quantum states are made using a molecular beam maser spectrometer. Cross sections are compared for a pure inversion state with those for a coherent superposition state for scattering gases He, Ar, N2, N2O, NH3, CH3H and CH3CN. The cross sections are significantly larger for scattering of the pure inversion state by NH3, CF3H and CH3CN than for scattering of the superposition state. The scattering is the same for both states on non-polar gases. These cross sections are related to relaxation parameters describing transitions between rotation and inversion states.

Original languageEnglish (US)
Pages (from-to)519-524
Number of pages6
JournalChemical Physics Letters
Volume20
Issue number6
DOIs
StatePublished - Jul 15 1973
Externally publishedYes

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Masers
Molecular beams
masers
molecular beams
Scattering
cross sections
inversions
scattering
Gases
gases
scattering cross sections
quantum wells
spectrometers
Spectrometers

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Molecular beam maser measurements of relaxation cross sections in NH3. / Kukolich, Stephen G; Wang, J. H S; Oates, D. E.

In: Chemical Physics Letters, Vol. 20, No. 6, 15.07.1973, p. 519-524.

Research output: Contribution to journalArticle

Kukolich, Stephen G ; Wang, J. H S ; Oates, D. E. / Molecular beam maser measurements of relaxation cross sections in NH3. In: Chemical Physics Letters. 1973 ; Vol. 20, No. 6. pp. 519-524.
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