Rovibrational energy transfer in the 4νCH manifold of acetylene, viewed by IR-UV double resonance spectroscopy

M. A. Payne, A. P. Milce, M. J. Frost, B. J. Orr

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Rovibrational states of the linear polyatomic acetylene molecule (C₂H₂) are not as simple as might be supposed. For example, the 4νCH manifold at ~12 700-cm⁻¹ in the electronic ground-state of C₂H₂ is congested and affected by anharmonic, l-resonance and Coriolis couplings. This complicates intramolecular dynamics and yields unusual forms collision-induced state-to-state molecular energy transfer. Rotational J-states of the (ν1 + 3ν3) or (1 0 3 0 0)⁰ vibrational combination level are monitored by time-resolved infrared-ultraviolet double resonance (IR-UV DR) spectroscopy, addressing the influence of intramolecular perturbations on J-resolved collisioninduced energy transfer with both even and odd ΔJ.
Original languageEnglish
Title of host publication16th National Congress of the Australian Institute of Physics
Subtitle of host publicationphysics for the nation : congress handbook and abstracts
EditorsMax Colla
Place of PublicationCanberra
PublisherAustralian National University
Number of pages4
ISBN (Print)0959806482
Publication statusPublished - 2005
EventAustralian Institute of Physics National Congress (16th : 2005) - Canberra
Duration: 30 Jan 20054 Feb 2005

Conference

ConferenceAustralian Institute of Physics National Congress (16th : 2005)
CityCanberra
Period30/01/054/02/05

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