title: Observation of nuclear quadrupole hyperfine structure in the infrared spectrum of hydrogen iodide using a tunable-diode laser.
abstract: Nuclear quadrupole hyperfine structure has been observed in the 1-0 vibration-rotation band of hydrogen iodide with a tunable-diode laser. The measured splittings agree well with microwave measurements of the HI molecule. Evidence for a slight change in the iodine nuclear quadrupole coupling constant from the ground to first excited vibrational state in hydrogen iodide was found.
authors.affiliation: NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.
authors.forename: L L
authors.initials: LL
authors.lastname: Strow