Observation of Crossover from Ballistic to Diffusion Regime for Excimer Molecules in Superfluid $^4$He

Autor:	Zmeev, D. E., Papkour, F., Walmsley, P. M., Golov, A. I., McClintock, P. V. E., Fisher, S. N., Guo, W., McKinsey, D. N., Ihas, G. G., Vinen, W. F.
Rok vydání:	2012
Předmět:	Condensed Matter - Other Condensed Matter Physics - Fluid Dynamics
Zdroj:	J. Low Temp. Phys. 171, p. 207 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1007/s10909-012-0720-6
Popis:	We have measured the temperature dependence of the time of flight of helium excimer molecules He2* in superfluid 4He and find that the molecules behave ballistically below 100mK and exhibit Brownian motion above 200 mK. In the intermediate temperature range the transport cannot be described by either of the models. Comment: 8 pages, 6 figures, submitted to the Proceedings of the International Conference on Quantum Fluids and Solids 2012
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1207.1799 Zobrazit plný text záznamu View this record from Arxiv