Physics at the Electron Beam Ion Trap

Schneider, Dieter; Steiger, J.; Schenkel, T.; López‐Urrutia, J. R. Crespo

doi:10.1007/978-3-642-58580-7_2

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…Since its conception and realization in 1986 [50] the electron beam ion trap (EBIT) has contributed to the study of highly charged ions (HCI) in many ways [51]. The EBIT -a developmental 'spin-off'of an earlier device, the electron beam ion source (EBIS) [52] -was originally designed for in-situ X-ray spectroscopy with low density, high temperature plasmas.…”

Section: The Ebit-retrap Facilitymentioning

confidence: 99%

Formation of Strongly Coupled Plasmas from MultiComponent Ions in a Penning Trap

2005

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This report reviews the production of strongly-coupled, multi-component, nonneutral, highly-charged ion plasmas in a cryogenic Penning trap. A unique ion source -Penning trap system has been developed and used: an Electron Beam Ion Trap-Source (EBIT-S), able to produce ions up to U 92+ , has been combined with a cold-bore Penning ion trap. The developed experimental techniques such as the ion production, extraction, bunching, multi-ion species trapping and storage (ions up to Th 80+ ), detection, cooling, and imaging are presented. The produced mixed plasmas, consisting of several ion species [e.g. Be + , Xe q+ (charge q = 34 . . . 44)], are cooled to a temperature of about 1 degree Kelvin and below. These low temperatures were obtained by applying a sypathetic cooling scheme, using laser cooled Be + ions. The determination of the temperature and the density from the laser resonance width and the fluorescence imaging of the Be + clouds respectively, yield a Coulomb coupling parameter for the xenon ion plasma of over 1000, large enough for crystallization. Crystallization can be achieved at these relatively high temperatures since the Coulomb coupling parameter scales with q 2 . Ion species with different mass to charge ratios centrifugally separate at low temperatures in the trap, and the plasma consists of concentric spheroidal shells of single component plasmas. But even in this case excellent thermal coupling between ion species takes place due to the long range Coulomb interactions. This is demonstrated by molecular dynamics simulations of the ion mixtures, which show ordered structures, indicating evidence for crystallization of the highly charged xenon ions.During the investigation of highly charged ion Coulomb crystallization in mixed strongly coupled plasmas, several enabling techniques were developed that are applicable to various areas of physics research: Analogous thermodynamics (Coulomb matter) of white dwarf astrophysical plasmas can experimentally be investigated, high precision laser spectroscopy is made possible due to reduced Doppler broadening effects, cold ion sources can be developed and coherent quantum control experiments can be further explored.

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Section: The Ebit-retrap Facilitymentioning

confidence: 99%

Formation of Strongly Coupled Plasmas from MultiComponent Ions in a Penning Trap

2005

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“…Since its conception and realization in 1986 [22] the electron beam ion trap (EBIT) has contributed as an essential tool to the study of highly charged ions in many ways [23]. The EBIT -a spin-off device from the electron beam ion source (EBIS) [24] -was originally developed for in-situ x-ray spectroscopy on low density, high temperature plasmas.…”

Section: The Ebit-retrap Facilitymentioning

confidence: 99%

Cooling of highly charged ions in a Penning trap

Gruber¹

2000

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Hochgeladene Ionen werden aus einer Elektronenstrahlionenfalle extrahiert und zu Retrap, einer kalten Penningfalle gebracht, wo sie mit lasergekiihlten Be + Ionen gemischt werden. Die Be + Ionen stellen ein Kiiltebad fiir die heiiJen hochgeladenen Ionen dar, deren Temperatur auf diese Weise in wenigen Sekunden um etwa acht Gr6fienordnungen gesenkt wird. Diese kalten, hochgeladenen Ionen bilden ein stark gekoppeltes, nicht-neutrales Plasma, das unter diesen Bedingungen zu Coulomb Clustern und Kristallen kondensiert. Mit der richtigen Mischung an Ionensorten k6nnen derartige Plasmen als Analogon fiir die extrem dichten Plasmen in Weifien Zwergen gesehen werden. Solche Plasmen k6nnen m6glicherweise auch zur Entwicklung yon kalten Ionenstrahlen fiir Anwendungen in der Nanotechnologie beitragen. Bedingt durch die verschwindende kleine Dopplerverbreiterung bei solchen Temperaturen kann Laserspektroskopie mit bisher nicht gekannter Genauigkeit betrieben werden. Die Dichte und die Temperatur der Be + Plasmen wuden gemessen und die hochgeladenen Ionen wurden erstmals sympathetisch, auf ghnliche Temperaturen gekiihlt. Molekulardynamische Simulationen konnten die Aggregationsform, Temperatur und die Dichte der hochgeladenen Ionen bestgtigen, wobei sich geordnete Strukturen in den Simulationen zeigten.

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Storage-Ring Studies of Dielectronic Recombination as a Tool for Precision Spectroscopy

Brandau

Kozhuharov

2012

Springer Series on Atomic, Optical, and Plasma Physics

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Physics at the Electron Beam Ion Trap

Cited by 4 publications

References 54 publications

Formation of Strongly Coupled Plasmas from MultiComponent Ions in a Penning Trap

Formation of Strongly Coupled Plasmas from MultiComponent Ions in a Penning Trap

Cooling of highly charged ions in a Penning trap

Storage-Ring Studies of Dielectronic Recombination as a Tool for Precision Spectroscopy

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