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An investigation relating the thermomagnetic force in polyatomic gases to the Chapman-Enskog theory
|dc.contributor.advisor||Adair, T. W.|
|dc.description.abstract||The thermomagnetic force is a magnetic field induced change in the radiometric force exerted on an object suspended in a heat conducting polyatomic gas. An investigation of the thermomagnetic force in gases of diatomic molecules N?éé, CO, and HD at 300??K and the spherical molecule was conducted with a very sensitive microstress gauge apparatus in which systematic changes in the field tensorial quantity V7T in the region of the detecting object were induced with a set of isothermal boundaries of well defined geometry. It is shown from the experimental results that the thermomagnetic force can be explained by means of a stress tensor component (in the bulk) calculated from the second order Chapman-Enskog approximation of the quantum mechanical Waldman-Snider transport equation. In the process of carrying out this investigation a new approach in microforce measurement was developed which in addition has allowed the observation of new phenomena related with the thermomagnetic force, e.g. an apparent increase beyond the usual saturation level at high (H/P) values in NH?éâ, and a dip which suggests a singularity in the normalized thermomagnetic force as a function of p?ü???.||en|
|dc.rights||This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.||en|
|dc.title||An investigation relating the thermomagnetic force in polyatomic gases to the Chapman-Enskog theory||en|
|thesis.degree.grantor||Texas A&M University||en|
|thesis.degree.name||Doctor of Philosophy||en|
|dc.publisher.digital||Texas A&M University. Libraries|
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