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Thomas Pohl

Rydberg-atom formation in strongly correlated ultracold plasmas

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  • G. Bannasch, Max Planck Inst Astron, Max Planck Society
  • ,
  • T. Pohl

In plasmas at very low temperatures, the formation of neutral atoms is dominated by collisional three-body recombination, owing to the strong similar to T-9/2 scaling of the corresponding recombination rate with the electron temperature T. While this law is well established at high temperatures, the unphysical divergence as T -> 0 clearly suggests a breakdown in the low-temperature regime. Here, we present a combined molecular dynamics Monte Carlo study of electron-ion recombination over a wide range of temperatures and densities. Our results reproduce the known behavior of the recombination rate at high temperatures, but reveal significant deviations with decreasing temperature. We discuss the fate of the kinetic bottleneck and resolve the divergence problem as the plasma enters the ultracold, strongly coupled domain.

Original languageEnglish
Article number052710
JournalPhysical Review A
Volume84
Issue5
Number of pages10
ISSN2469-9926
DOIs
Publication statusPublished - 11 Nov 2011
Externally publishedYes

    Research areas

  • NONIDEAL HYDROGEN PLASMA, ONE-COMPONENT PLASMA, NEUTRAL PLASMAS, MOLECULAR-DYNAMICS, DENSE-PLASMAS, MONTE CARLO, RECOMBINATION, IONIZATION, STATES, COLD

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