# ROTATIONAL AND VIBRATIONAL COLLISIONAL PROCESSES IN $CH_{3}Cl$ FROM 200 K TO 400 K.

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 dc.creator Pape, T. W. en_US dc.creator De Lucia, Frank C. en_US dc.creator Everitt, Henry en_US dc.creator Skatrud, David D. en_US dc.date.accessioned 2007-11-20T17:06:49Z dc.date.available 2007-11-20T17:06:49Z dc.date.issued 1995 en_US dc.identifier 1995-ML-13 en_US dc.identifier.uri http://hdl.handle.net/1811/29565 dc.description 1 T. W. Pape, F. C. De Lucia, and D. D. Skatrud, J. Chem. Phys. 100, 5666 (1994). en_US dc.description Author Institution: Duke University, Durham, NC 27706; Ohio State University, Columbus, OH 43210; Research Triangle Park, NC 27709 en_US dc.description.abstract We have used time-resolved infrared/mm-wave double resonance techniques to study the temperature dependence of rotational and vibrational collisional processes in methyl chloride. Previously, these processes have been studied in detail at room $temperature^{1}$. Of particular interest is the K-changing rotational collisional process, which is very thermal in nature. The theory used to explain the room temperature results makes straightforward predictions about the properties of K-changing collisions at other temperatures. The accuracy of these predictions will be discussed. Of more practical interest is the cumulative rate of all collisional processes over this temperature range, which is observed as pressure broadening. We have studied the temperature responses of the collisional processes in $CH_{3}Cl$ that have significant contributions in pressure broadening, including the dipole-dipole process. This information should serve as a guide for understanding the temperature response of pressure broadening in other similar molecules. en_US dc.format.extent 55956 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ROTATIONAL AND VIBRATIONAL COLLISIONAL PROCESSES IN $CH_{3}Cl$ FROM 200 K TO 400 K. en_US dc.type article en_US