✦ LIBER ✦

Molecular beam maser measurements of relaxation cross sections in NH3

✍ Scribed by S.G. Kukolich; J.H.S. Wang; D.E. Oates

Publisher: Elsevier Science
Year: 1973
Tongue: English
Weight: 460 KB
Volume: 20
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(73)80489-0

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✦ Synopsis

Direct measurements of scattering cross sections for NHs in well-defined quantum states are made using a molcrular beam maser spectrometer. Cross sections are compared for a pure inversion state with those for a coherent superposition state for scattering gases He, Ar, Nz, N20, NHa, CFgH and CHaCN.The cross sectionsare significantly larger for scattering of the pure inversion state by NHs, CPaH and CHsCN 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.

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