Beam maser measurements of rotational relaxation of H2CO

P. B. Foreman, K. R. Chien, S. G. Kukolich

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Inelastic scattering cross sections for the upper and lower states of J=1 and J=2, K-type doublets of formaldehyde were measured using a beam maser spectrometer. Scattering gasses used were He, Ar, H2, N2, CO2, HCl, NH3, CH3F, and CF3H. Systematic variations in cross sections with the symmetry and dipole moments of scattering molecules are observed. Anderson's theory of pressure broadening, with slight modification, is used to interpret the data. This model gives reasonably good agreement with most of the observed effects.

Original languageEnglish (US)
Pages (from-to)4710-4714
Number of pages5
JournalThe Journal of chemical physics
Issue number12
StatePublished - 1975

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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