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DY: Dynamik und Statistische Physik

DY 34: Poster

DY 34.102: Poster

Montag, 7. März 2005, 15:30–18:00, Poster TU D

Rotational Diffusion near Confining Walls — •Heidrun Gleisberg, Patrick Ilg, and Siegfried Hess — Institut für Theoretische Physik, Hardenbergstr. 36, Technische Universität Berlin

A simple model is proposed to study the influence of confining walls on the rotational dynamics of a molecule, with emphasis on the rotational diffusion coefficient.

In particular, a time reversible dynamics is considered which employs a recently introduced thermostat for rotational motion [1]. This model is compared to the corresponding approach via the irreversible Langevin equation.

Analytical and numerical results for a molecule in a channel are presented, exhibiting an interesting dependence of the rotational diffusion coefficient on the imposed spatial restrictions.

[1] S.Hess, Z. Naturforsch. 58a, 377 (2003)