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Regular version of the site

Article

Relaxation and collective excitations of cluster nano-plasmas

Journal of Physics B: Atomic, Molecular and Optical Physics. 2018. Vol. 51. No. 01-4001. P. 1-9.
Reinholz H., Röpke G., Broda I., Morozov I., Bystryi R., Lavrinenko Y.

Nano-plasmas produced, for example, in clusters after short-pulse laser irradiation, can show collective excitations, as derived from the time evolution of fluctuations in thermodynamic equilibrium. Molecular dynamical simulations are performed for various cluster sizes. New data are obtained for the minimum value of the stationary cluster charge. The bi-local autocorrelation function gives the spatial structure of the eigenmodes, for which energy eigenvalues are obtained. By varying the cluster size, starting from a few-particle cluster, the emergence of macroscopic properties such as collective excitations is shown.