Rotational and hyperfine structure in the yellow system of CuF

Timothy C. Steimle, Christopher R. Brazier, John M. Brown

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Previous spectroscopic studies of copper monofluoride have suggested that the excited electronic state involved in the yellow system is either 3Σ- or a (1Π, 1Σ) "p-complex". A Doppler-limited (HWHM {reversed tilde equals} 0.4 GHz), laser-induced fluorescence study of the (0, 0) band of the 63Cu19F isotopic species was performed in order to make a more definite assignment of the upper state. As a result of increased resolution, many of the rotational lines appear as partially resolved quartets resulting from the 63Cu (I = 3 2) nuclear hyperfine splitting. It was not possible on the evidence available to decide between the alternative assignments for the upper state. Assuming a 3Σ- state, 200 features were assigned, measured, and fitted by a least-squares procedure to determine values for the parameters (cm-1) of CuF in the excited state: T0 = 17 574.9663(12), λ0 = - 27.7149(11), λD0 = 0.001161(1), B0 = 0.375035(2), 106D0 = 0.510(1), γ0 = 0.01074(6), bF(63Cu) = 0.032(2), c(63Cu) = -0.039(7). The 63Cu hyperfine parameters are interpreted in terms of possible electronic models of CuF in the A state.

Original languageEnglish (US)
Pages (from-to)137-149
Number of pages13
JournalJournal of Molecular Spectroscopy
Issue number1
StatePublished - Jan 1982
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Rotational and hyperfine structure in the yellow system of CuF'. Together they form a unique fingerprint.

Cite this