Laser-molecular beam measurement of hyperfine structure in the I2 spectrum

D. J. Ruben, Stephen G Kukolich, L. A. Hackel, D. G. Youmans, S. Ezekiel

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Very high resolution measurements of hyperfine structure on the P(13) and R(15), 43-0, 3gp0+u1Σg+ transitions in iodine 127 were made using laser molecular beam spectroscopy. The observed linewidth was 300 kHz (fwhm) giving a resolution of 5 × 10-10 The observed spectrum was fitted to obtain a quadrupole coupling strength difference of ΔeQq = 1906 ± 2 MHz and a spin rotation interaction strength difference of ΔCI = 181 ± 7 kHz between the upper and lower levels of the P(13) transition. For the R (15) transition ΔeQq = 1905 ± 2 MHz and ΔCI = 167 ± 5 kHz.

Original languageEnglish (US)
Pages (from-to)326-330
Number of pages5
JournalChemical Physics Letters
Issue number2
Publication statusPublished - Oct 1 1973
Externally publishedYes


ASJC Scopus subject areas

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

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