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 D2 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.
Far-Infrared Collisional Lineshapes of Lithium Hydride and Deuteride Perturbed by H2 and D2 / P. Denatale;M. Bellini;M. Inguscio;G. Buffa;O. Tarrini. - In: JOURNAL OF MOLECULAR SPECTROSCOPY. - ISSN 0022-2852. - STAMPA. - 163:(1994), pp. 510-514. [10.1006/jmsp.1994.1042]
Far-Infrared Collisional Lineshapes of Lithium Hydride and Deuteride Perturbed by H2 and D2
INGUSCIO, MASSIMO;
1994
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 D2 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.
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