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  Sawtooth activity of the ion cloud in an electron-beam ion trap

Radtke, R., & Biedermann, C. (2003). Sawtooth activity of the ion cloud in an electron-beam ion trap. Physical Review. A, 67: 032705. doi:10.1103/PhysRevA.67.032705.

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Radtke, R.1, Author              
Biedermann, C.1, Author              
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1Plasma Diagnostics Group (HUB), Max Planck Institute for Plasma Physics, Max Planck Society, ou_1856324              

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 Abstract: The dynamics of an ensemble of highly charged Ar and Ba ions in an electron-beam ion trap (EBIT) was studied by recording time-resolved x-ray spectra emitted from trapped ions. Sawtoothlike signatures manifest in the spectra for a variety of EBIT operating conditions indicating a sudden collapse of the ion inventory in the trap. The collapse occurs on a time scale of approximately 100 ms and the evolution of the sawteeth is very sensitive to parameters such as electron-beam current and axial trap depth. Analysis of the measurements is based on a time-dependent calculation of the trapping process showing that sawtooth activity is caused by the feedback between the low-Z argon and high-Z barium ions. This unexpected behavior demonstrates the importance of nonlinear effects in electron-beam traps containing more than a single ion species.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
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 Rev. Type: Peer
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Title: Physical Review. A
  Alternative Title : Phys. Rev. A
Source Genre: Journal
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Publ. Info: Copyright © 2003 The American Physical Society
Pages: - Volume / Issue: 67 Sequence Number: 032705 Start / End Page: - Identifier: -