Measurement of vibrational frequencies of the H3 molecule using two-step photoionization
- 15 May 1989
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 90 (10) , 5299-5308
- https://doi.org/10.1063/1.456434
Abstract
A two‐step photoionization scheme is used to determine vibrational frequencies of the n=3 Rydberg states of triatomic hydrogen. Symmetric‐stretch frequencies in orthotrihydrogen of 3212.1 and 3168 cm−1 are measured for the N=1 levels of the states 3s 2A’1 and 3d 2E‘, respectively. Transitions to bending‐mode excited levels in the 3d states and overtone levels of the 3p 2 E’ state are observed also.Keywords
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