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Thomas Pohl

Electron-ion recombination in strongly coupled cold plasmas under nonequilibrium conditions

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We discuss the dynamics of recombination of an expanding ultracold plasma into highly excited Rydberg states, with emphasis on the influence of possible strong coupling between the charges and the nonequilibrium character of the electronic component. While the former does not significantly affect recombination in current experimental scenarios, the latter is shown to have a considerable influence on the system dynamics. We derive correction factors quantifying the deviation of collision rates from their respective equilibrium values. The experimentally observed unexpectedly high recombination rate at long evolution times can be reproduced by a proper inclusion of these effects without the need to invoke alternative, previously suggested mechanisms, such as an 'adiabatic motional recombination' or the development of very strong electron correlations by collisional cooling.

Original languageEnglish
JournalJournal of Physics A: Mathematical and Theoretical
Volume39
Issue17
Pages (from-to)4571-4577
Number of pages7
ISSN0305-4470
DOIs
Publication statusPublished - 28 Apr 2006
EventInternational Conference on Strongly Coupled Coulomb Systems - Moscow
Duration: 20 Jun 200524 Jun 2005

Conference

ConferenceInternational Conference on Strongly Coupled Coulomb Systems
CityMoscow
Period20/06/200524/06/2005

    Research areas

  • ULTRACOLD NEUTRAL PLASMA, IONIZATION, DYNAMICS

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