Abstract:
The cooling of the metal cluster Pd13 in an atmosphere of rare gas has been studied by means of computer simulation. By simulation, the average energy transfer in collisions between one cluster and one gas atom has been obtained. Emphasis has been placed on conditions when the temperatures of the colliding species are almost equal. All modes of motion, inclusive the translation, must be considered in order to obtain vanishing energy transfer at equilibrium. A simulation scheme is presented by which the energy transfer is zero to the cluster when the gas and the cluster temperatures are equal. At equilibrium the energy transfer does however not vanish for all impact parameters. In the collisions with Pd13, the cluster is heated by collisions with a small impact parameter but equally cooled by collisions with a large impact parameter. Argon and krypton are found to cool Pd13 equally efficiently while neon and helium are less efficient cooling agents.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 28 September 2001 / Received in final form 8 August 2002 Published online 12 November 2002
RID="a"
ID="a"e-mail: JanW@phc.gu.se
Rights and permissions
About this article
Cite this article
Westergren, J., Nordholm, S. & Rosén, A. Cooling efficiency in collisions between Pd and He, Ne, Ar and Kr. Eur. Phys. J. D 22, 81–97 (2003). https://doi.org/10.1140/epjd/e2002-00224-x
Issue Date:
DOI: https://doi.org/10.1140/epjd/e2002-00224-x