INFRARED FAR-INFRARED DOUBLE RESONANCE STUDY ON ($NH_{3}$)$_{2}$ IN A JET
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Date
1992
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Publisher
Ohio State University
Abstract
Infrared far infrared (IR-FIR) double resonance experiments on ($NH_{3}$)$_{2}$ in a jet are performed. Based on the results the nature of the tunneling splitting detected in former IR and FIR studies can be identified. It appears that the ($NH_{3}$)$_{2}$ complex exhibits the following feasible motions: internal rotation of each monomer, interchange tunneling, and inversion tunneling. The rigid structure is classified in C, where a plane of symmetry is assumed. The FIR transitions reported so far and three new bands reported in this work are assigned within the group $G_{144}$. It is found that the inversion splitting for some of the bands is almost quenched upon excitation of the $v_{2}$ umbrella motion the inversion splitting amounts to $3.7 cm^{-1}$.
Description
Author Institution: Molecular and Laser Physics, University of Nijmegen; Molecular and Laser Physics, Institut f\""{u}r Angewandte Physik