| Author(s): |
Laurent H. Coudert; Sergei P. Belov; F. Willaert; B. McElmurry; R. Lucchese; John W. Bevan; Jon T. Hougen; |
| Title: |
Submillimeter Spectrum and Analysis of Vibrational and Hyperfine Coupling Effects in (HI)2 |
| Published: |
October 01, 2009 |
| Abstract: |
Observed rotational-vibrational transitions of HI dimer in the geared bending mode, centered at 511.9 GHz, are reported. This ~50 kHz high resolution spectrum was recorded using a co-axially configured pulsed jet submillimeter spectrometer and the hyperfine structure of R(J) and P(J) transitions from the quadrupole moments of iodine nuclei are completely resolved for low J transitions. An analysis of the hyperfine patterns was carried out using a theoretical approach accounting for the large amplitude motion effects and for hyperfine matrix elements within and between vibrational states. The submillimeter analysis is consistent with a vibrationnally averaged ground state Rcm = 4.56372(1) Å and average bending angle theta = 46.405(1) °. |
| Citation: |
Chemical Physics Letters |
| Volume: |
482 |
| Pages: |
pp. 180 - 188 |
| Keywords: |
(HI)2; High-Resolution Spectrum; Submillimeter Spectrum; Quadrupole Coupling |
| Research Areas: |
Physics, Chemical Physics, Molecular Spectroscopy |
| PDF version: |
 Click here to retrieve PDF version of paper (286KB) |
