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dc.creatorEchebiri, Geraldine O.en_US
dc.creatorSmarte, Matthewen_US
dc.creatorWalters, Wendell W.en_US
dc.creatorCleveland, Jill M.en_US
dc.creatorMcCarl, Christineen_US
dc.creatorKunin, Aliceen_US
dc.creatorMullin, Amy S.en_US
dc.date.accessioned2013-07-16T21:35:26Z
dc.date.available2013-07-16T21:35:26Z
dc.date.issued2013en_US
dc.identifier2013-RH-10en_US
dc.identifier.urihttp://hdl.handle.net/1811/55241
dc.descriptionAuthor Institution: Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742en_US
dc.description.abstractThe dynamics of collisional deactivation of highly energized molecules, pyrazine-h$_{4}$ and pyrazine-d$_{4}$, by HCl molecules at 300 K show evidence of a new mechanism for collisional energy transfer. Highly vibrationally excited (E$_{vib}$ = 37,900 $\wn$) pyrazine-h$_{4}$ and pyrazine-d$_{4}$ molecules are produced in separate experiments by pulsed excitation with the fourth harmonic output of a Nd:YAG laser at $\lambda$ = 266 nm. Collisions between the energized isotopes and HCl molecules are monitored by measuring the nascent transient IR absorption of scattered HCl in individual rotational states. The results indicate that HCl molecules are scattered with a gain in rotational and translational energy, but the largest recoil energies are observed for the lowest rotational energy states of HCl. This behavior is opposite to that seen for other bath molecules including DCl and CO$_{2}$. The results point to differences in intermolecular interactions between the energy donor and acceptor molecules as contributing factors to the observed differences in the mechanism of energy transfer.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleOBSERVATION OF NEW DYNAMICS IN THE STATE-RESOLVED COLLISIONAL RELAXATION OF HIGHLY EXCITED MOLECULESen_US
dc.typeArticleen_US


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