Heating rates and enhanced equilibration rates with strongly correlated ions in a Penning-Malmberg trap

J. J. Bollinger, M. J. Delaney, T. Hasegawa, D. H.E. Dubin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We laser-cooled up to 106 9Be+ ions to ∼1 mK in a Penning-Malmberg trap and measured the ion temperature as a function of time after turning off the cooling laser. We observed a rapid heating of the ions when their temperature in a direction parallel to the magnetic field increased above 10 mK and show that this is due to the equilibration of a warm (few kelvins) impurity-ion cyclotron motion with the parallel motion of the 9Be+ ions. The observed equilibration is more than 14 orders of magnitude faster than predicted by theory that is valid in the absence of correlations, and is closely related to the enhancement of nuclear reactions in dense stellar interiors, first predicted over 50 years ago by Salpeter. Future experiments similar to the work described here can be used to model nuclear fusion in dense plasmas. Finally, we describe an attempt to use the measured heating rate of the 9Be+ ions to observe the latent heat of the predicted solid-liquid phase transition.

Original languageEnglish
Title of host publicationNON-NEUTRAL PLASMA PHYSICS VI
Subtitle of host publicationWorkshop on Non-Neutral Plasmas 2006
Pages183-192
Number of pages10
DOIs
Publication statusPublished - 2006
EventNON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006 - Aarhus, Denmark
Duration: 2006 Jun 252006 Jun 29

Publication series

NameAIP Conference Proceedings
Volume862
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherNON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006
CountryDenmark
CityAarhus
Period06/6/2506/6/29

Keywords

  • Cyclotron equilibration rate
  • Laser cooling
  • Latent heat
  • One-component plasma
  • Penning trap
  • Strongly correlated plasma

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Bollinger, J. J., Delaney, M. J., Hasegawa, T., & Dubin, D. H. E. (2006). Heating rates and enhanced equilibration rates with strongly correlated ions in a Penning-Malmberg trap. In NON-NEUTRAL PLASMA PHYSICS VI: Workshop on Non-Neutral Plasmas 2006 (pp. 183-192). (AIP Conference Proceedings; Vol. 862). https://doi.org/10.1063/1.2387923