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J-REORIENTATION IN THE $H_{2}CO\bar{A}^{1}A_{2}4^{1}1_{0,1}$ ROTATIONAL LEVEL

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dc.creator Halle, S. en_US
dc.creator Coy, Stephen L. en_US
dc.creator Kinsey, J. L. en_US
dc.creator Silbey, R. J. en_US
dc.creator Field, R. W. en_US
dc.date.accessioned 2006-06-15T18:14:04Z
dc.date.available 2006-06-15T18:14:04Z
dc.date.issued 1988 en_US
dc.identifier 1988-TC-7 en_US
dc.identifier.uri http://hdl.handle.net/1811/17671
dc.description Author Institution: Department of Chemistry, Massachusetts Institute of Technology; Wiess School of Natural Sciences, Rice University en_US
dc.description.abstract We report measurements of the rate of depolarization of a single rotational level of formaldehyde in the absence of an external field. The level in question is $\bar{A}A_{2} V_{4}=1, J=1, K_{*}=0$. Previous rotational state-to-state measurements in the $H_{2}CO \bar{A}$ state by Transient Gain and Transient Polarization Spectroscopies suggested a remarkable resistance to depolarization, even for $\Delta J=\pm 1.\pm 2$ rationally inelastic processes, and a strong propensity for electric a-dipole collision-induced inelastic transitions. At zero electric field, elastic depolarization within J=1 are dipole forbidden; however. M-changing transitions could occur via two-step $1_{0.1}\rightarrow(O_{0.2} or 2_{0.3})\rightarrow 1_{0.4}$ processes. The transient response within the $1_{g}$, level is monitored by various PUMP and PROBE polarization schemes. The transient gain data are fitted by various master equation models which provide information about the direct vs. sequential nature of the depolarization process. en_US
dc.format.extent 136295 bytes
dc.format.mimetype image/jpeg
dc.language.iso English en_US
dc.title J-REORIENTATION IN THE $H_{2}CO\bar{A}^{1}A_{2}4^{1}1_{0,1}$ ROTATIONAL LEVEL en_US
dc.type article en_US