Thermalization of a particle by dissipative collisions
Institut de Physique Théorique, Ecole Polytechnique Fédérale
de Lausanne CH-1015, Lausanne, Switzerland
2 Institute of Theoretical Physics, University of Warsaw Hoża 69, 00 681 Warsaw, Poland
Accepted: 30 March 1999
One considers the stationary state of a test particle immersed in a homogeneous fluid in equilibrium at temperature T, undergoing dissipative collisions with the fluid particles. It is shown that the corresponding linear Boltzmann equation still possesses a stationary Maxwellian velocity distribution, with an effective temperature smaller than T. This effective temperature is explicitly given in terms of the restitution parameter and the masses.
PACS: 51.10.+y – Kinetic and transport theory of gases / 44.90.+c – Other topics in heat transfer
© EDP Sciences, 1999