Planar multipole ion trap

Debatin, Markus; Kröner, Michael; Mikosch, Jochen; Trippel, Sebastian; Morrison, Nathan; Reetz‐Lamour, M.; Woias, Peter; Wester, Roland; Weidemüller, Matthias

doi:10.1103/physreva.77.033422

Cited by 26 publications

(30 citation statements)

References 26 publications

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“…To overcome the pockets a significantly enhanced precision in the manufacturing and assembly of 22-pole traps is required. An interesting alternative for precisely controllable multipole ion traps are planar, chip-based traps [24].…”

Section: Resultsmentioning

confidence: 99%

How can a 22-pole ion trap exhibit ten local minima in the effective potential?

Otto

Hlavenka

Trippel

et al. 2009

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. The column density distribution of trapped OH − ions in a 22-pole ion trap is measured for different trap parameters. The density is obtained from position-dependent photodetachment rate measurements. Overall, agreement is found with the effective potential of an ideal 22-pole. However, in addition we observe 10 distinct minima in the trapping potential, which indicate a breaking of the 22-fold symmetry. Numerical simulations show that a displacement of a subset of the radiofrequency electrodes can serve as an explanation for this symmetry breaking. ‡ present address:

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Section: Resultsmentioning

confidence: 99%

How can a 22-pole ion trap exhibit ten local minima in the effective potential?

Otto

Hlavenka

Trippel

et al. 2009

J. Phys. B: At. Mol. Opt. Phys.

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“…Right panel: photograph of an assembled chip-based planar multipole ion trap fabricated with 2 × 16 etched gold electrodes on two glass substrates, 5 mm apart. Ions are confined in the space between the two chips [101].…”

Section: Discussionmentioning

confidence: 99%

Radiofrequency multipole traps: tools for spectroscopy and dynamics of cold molecular ions

Wester

2009

J. Phys. B: At. Mol. Opt. Phys.

144

151

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Abstract. Multipole radiofrequency ion traps are a highly versatile tool to study molecular ions and their interactions in a well-controllable environment. In particular the cryogenic 22-pole ion trap configuration is used to study ion-molecule reactions and complex molecular spectroscopy at temperatures between few Kelvin and room temperatures. This article presents a tutorial on radiofrequency ion trapping in multipole electrode configurations. Stable trapping conditions and buffer gas cooling, as well as important heating mechanisms, are discussed. In addition, selected experimental studies on cation and anion-molecule reactions and on spectroscopy of trapped ions are reviewed. Starting from these studies an outlook on the future of multipole ion trap research is given.

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“…where C [1][2][3][4] are constants associated with the electrode material (the work function) and geometry as well as other constants related to field emission (see [37] for more details on the Fowler-Nordheim equation), and  is the applied potential. Eq.…”

Section: Hgpd Ionization Devicesmentioning

confidence: 99%

“…However, microscale ionization devices at atmospheric pressure also have the potential to be applied to various on-chip technologies including miniature mass spectrometers ( [1]- [3]), ionization gas sensors ( [4]- [6]), and heat transfer enhancement devices ( [7], [8]). One goal in developing microscale ionization devices for these applications is to operate them below the breakdown threshold while still generating appreciable ion current.…”

Section: Introductionmentioning

confidence: 99%

Planar microscale ionization devices in atmospheric air with diamond-based electrodes

Go¹,

Fisher

Garimella

et al. 2009

Plasma Sources Sci. Technol.

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Planar microscale ionization devices that operate in atmospheric air have been developed out of highly graphitic polycrystalline diamond (HGPD). The devices have been fabricated on both silicon and quartz substrates with electrode gaps ranging from 5 to 20 m. Experiments show that the HGPD devices operate in the pre-breakdown regime where a field emission mode enables appreciable ionization current without the occurrence of sparks or breakdown. The devices are compared to prior experiments with HGPD thin-films, and these new, on-chip devices operate at similar current magnitudes of 100 nA to 5 A. For comparison, titanium planar ionization devices have also been fabricated and tested. However, these devices were unable to operate at any appreciable current without the formation of spark discharges. These results suggest that HGPD is a good candidate material for integrated, on-chip ionization devices for applications including miniature mass spectrometry, gas sensing, and microscale electrohydrodynamics.

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Planar multipole ion trap

Cited by 26 publications

References 26 publications

How can a 22-pole ion trap exhibit ten local minima in the effective potential?

How can a 22-pole ion trap exhibit ten local minima in the effective potential?

Radiofrequency multipole traps: tools for spectroscopy and dynamics of cold molecular ions

Planar microscale ionization devices in atmospheric air with diamond-based electrodes

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