Far infrared collisional lineshapes of lithium hydride and deuteride perturbed by H2 and D2

Year: 1994

Authors: De Natale P., Bellini M., Inguscio M., Buffa G., Tarrini O.

Autors Affiliation: Dipartimento di Fisica, Università di Firenze and European Laboratory for Nonlinear Spectroscopy (LENS) Largo E. Fermi 2, 50125 Firenze, Italy and Dipartimento di Fisica dell’Università, Piazza Torricelli 2, 56126 Pisa, Italy

Abstract: We have measured the pressure-broadening and pressure-shift coefficients of several rotational transitions for 7LiH, 6LiH, and 7LiD in the presence of H2 or D, as perturbing gases, using a tunable far-infrared spectrometer. Experimental data have been collected in the 1.3- to 3.1-THz frequency interval and are in good agreement with theoretical predictions, based on a dipole-quadrupole interaction scheme. Calculated values are presented also for self-broadening and shift coefficients for 7LiH. These measurements, reporting for the first time pressure-broadening and shift parameters of lithium hydride, provide accurate tests of theoretical models for very light molecules.


Volume: 163 (2)      Pages from: 510  to: 514

KeyWords: molecular-constants; spectrum
DOI: 10.1006/jmsp.1994.1042

Citations: 7
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