dc.creator Smith, Gregory P. en_US dc.creator Crosley, David R. en_US dc.date.accessioned 2006-06-15T14:39:01Z dc.date.available 2006-06-15T14:39:01Z dc.date.issued 1981 en_US dc.identifier 1981-MF'-1 en_US dc.identifier.uri http://hdl.handle.net/1811/11537 dc.description Author Institution: en_US dc.description.abstract Energy transfer from specific rotational levels (quantum Number $N^{\prime}$;) of $v^{\prime}=1$ of the $A^{2}\Sigma ^{+}$ state of the hydroxyl radical has been studied. The environment is the burnt gases ($\sim 70% N_{2}$) of a $Ch_{4/air}$ flame at $T=1900$ K and atmospheric pressure. A tunable laser populates seven individual levels in the range $N^{\prime}=1$ to 16, and rotationally resolved fluorescence measurement are made with a scanning monochromator. The energy transfer rate is found to decrease with increasing $N^{\prime}$. The rotational population distribution for molecules transferred into $v^{\prime}=0$ is thermal-like ($T\sim 2200$K) for an initial N =1,5 and 10 in v =1 but much hotter ($T\sim3400$K) for an initial N =13-16. The ratio of the rate of rotational energy transfer within v =1, to the quenching rate, decreases rapidly over the range N =13 to 16, which spans the predissociation limit. A definite propensity for transfer to nearby levels, and for maintaining, spin component ($F_{1} vs F_{2}$), is exhibited during rotational relaxation of the levels of high N. en_US dc.format.extent 87276 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ENERGY TRANSFER OF $OH(A^{2} \Sigma ^{+},v`=1)$ IN FLAME GASES en_US dc.type article en_US
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