Centrifugal separation and equilibration dynamics in an electron-antiproton plasma

G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A. J. HumphriesR. Hydomako, S. Jonsell, N. Madsen, S. Menary, P. Nolan, A. Olin, A. Povilus, P. Pusa, F. Robicheaux, E. Sarid, D. M. Silveira, C. So, J. W. Storey, R. I. Thompson, D. P. Van Der Werf, J. S. Wurtele, Y. Yamazaki

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Charges in cold, multiple-species, non-neutral plasmas separate radially by mass, forming centrifugally separated states. Here, we report the first detailed measurements of such states in an electron-antiproton plasma, and the first observations of the separation dynamics in any centrifugally separated system. While the observed equilibrium states are expected and in agreement with theory, the equilibration time is approximately constant over a wide range of parameters, a surprising and as yet unexplained result. Electron-antiproton plasmas play a crucial role in antihydrogen trapping experiments.

Original languageEnglish
Article number145001
JournalPhysical Review Letters
Volume106
Issue number14
DOIs
StatePublished - 4 Apr 2011
Externally publishedYes

Fingerprint

Dive into the research topics of 'Centrifugal separation and equilibration dynamics in an electron-antiproton plasma'. Together they form a unique fingerprint.

Cite this