Using tunable far-infrared spectrometers with high-frequency stability and accuracy, we have measured the self-pressure broadening and shift of CH3CN. We obtained clear evidence of absorber-perturber resonance effects on the collisional line shape. This tests the theoretical model and its possible improvements and also allows us to make broadening and shift predictions for a large class of molecules. Moreover, the resonance effect produces a theoretical temperature dependence of self-broadening that is very different from what is commonly assumed.
Far-infrared self-broadening in methylcyanide: Absorber-perturber resonance / G. Buffa;O. Tarrini;P. De Natale;M. Inguscio;F. Pavone;M. Prevedelli;K. Evenson;L. Zink;G. Schwaab. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 45:(1992), pp. 6443-6450. [10.1103/PhysRevA.45.6443]
Far-infrared self-broadening in methylcyanide: Absorber-perturber resonance
DE NATALE, PAOLO;INGUSCIO, MASSIMO;PAVONE, FRANCESCO SAVERIO;PREVEDELLI, MARCO;
1992
Abstract
Using tunable far-infrared spectrometers with high-frequency stability and accuracy, we have measured the self-pressure broadening and shift of CH3CN. We obtained clear evidence of absorber-perturber resonance effects on the collisional line shape. This tests the theoretical model and its possible improvements and also allows us to make broadening and shift predictions for a large class of molecules. Moreover, the resonance effect produces a theoretical temperature dependence of self-broadening that is very different from what is commonly assumed.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
