Rotational energy distribution in a nozzle beam

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

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The fraction of beam molecules in J =0, J = 1, and J=2 rotational states of OCS was measured as a function of pressure behind a nozzle beam source. The fractional populations were obtained from the intensities of microwave emission and absorption signals observed with a beam maser spectrometer. Total beam intensities were measured also. Large deviations from a Boltzmann rotational energy distribution were observed. The "effective rotational excitation temperature" obtained from fractional population was near 15°K for ,7=0, 40°K. for J = l, and 170°K for J =2 with 150 Torr nozzle pressure.

Original languageEnglish (US)
Pages (from-to)4690-4699
Number of pages10
JournalThe Journal of Chemical Physics
Volume61
Issue number11
StatePublished - 1974

Fingerprint

nozzles
Nozzles
energy distribution
Masers
Spectrometers
Microwaves
microwave emission
Molecules
microwave absorption
rotational states
masers
spectrometers
deviation
Temperature
excitation
molecules
temperature

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Kukolich, S. G., Oates, D. E., & Wang, J. H. S. (1974). Rotational energy distribution in a nozzle beam. The Journal of Chemical Physics, 61(11), 4690-4699.

Rotational energy distribution in a nozzle beam. / Kukolich, Stephen G; Oates, D. E.; Wang, J. H S.

In: The Journal of Chemical Physics, Vol. 61, No. 11, 1974, p. 4690-4699.

Research output: Contribution to journalArticle

Kukolich, SG, Oates, DE & Wang, JHS 1974, 'Rotational energy distribution in a nozzle beam', The Journal of Chemical Physics, vol. 61, no. 11, pp. 4690-4699.
Kukolich, Stephen G ; Oates, D. E. ; Wang, J. H S. / Rotational energy distribution in a nozzle beam. In: The Journal of Chemical Physics. 1974 ; Vol. 61, No. 11. pp. 4690-4699.
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