title: Rotation of molecular hydrogen in Si: unambiguous identification of ortho-H(2) and para-D(2).
abstract: The 3618.4 and 2642.6 cm(-1) infrared absorption lines of interstitial H(2) and D(2) in silicon have been studied under applied uniaxial stresses. The resulting splittings and their small dependence on isotope establish that H(2) in Si is a nearly free rotor and that these lines arise from vibrational transitions between rovibrational states with rotational quantum number J = 1 (T(2) in T(d) symmetry) for ortho-H(2) and para-D(2).
authors.affiliation: Department of Physics, Sherman Fairchild Laboratory, Lehigh University, Bethlehem, PA 18015, USA.
authors.forename: E Elinor
authors.initials: EE
authors.lastname: Chen
authors.forename: Michael
authors.initials: M
authors.lastname: Stavola
authors.forename: W
authors.initials: W
authors.lastname: Beall Fowler
authors.forename: J Anna
authors.initials: JA
authors.lastname: Zhou