Conceptual design and sample preparation of electrode covered single glass macro-capillaries for studying the effect of an external electric field on particle guiding

Wartak, A.; Bereczky, R J; Kowarik, G.; Tőkési, K.; Aumayr, F.

doi:10.1016/j.nimb.2014.12.055

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…Existing research can be classified into two categories depending on the diameter d of the capillaries used for guiding: nanocapillaries (d < 1 µm) and macrocapillaries (d > 1 µm) [19]. Recent efforts in macrocapillary transport include the use of external electric fields to guide the ions in conjunction with the guiding effect to improve efficiency of transport [20], use of conical capillaries for guiding antiparticle beams [21] and the use of curved glass capillaries to achieve large bending angles [22]. In this paper, we have studied the transport of singly-charged ions through straight and conical sections of insulating as well as metallic macrocapillaries.…”

Section: Introductionmentioning

confidence: 99%

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Kulkarni

Lyle

Sosolik

2016

Nuclear Instruments and Methods in Physics Research Section B:

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We present results on ion transport through large bore capillaries (macrocapillaries) that probe both the geometric and ion-guided aspects of this ion delivery mechanism. We have demonstrated that guiding in macrocapillaries exhibits position-and angledependent transmission properties which are directly related to the capillary material (either metal or insulator) and geometry. Specifically, we have passed 1 keV Rb + ions through glass and metal macrocapillaries, and have observed oscillations for the transmitted ion current passing through the insulating capillaries. Straightforward calculations show that these oscillations can be attributed to beam deflections from charge patches that form on the interior walls of the capillary. The absence of these oscillations in the metal capillary data serve as further confirmation of the role of charge patch formation.

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Section: Introductionmentioning

confidence: 99%

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Kulkarni

Lyle

Sosolik

2016

Nuclear Instruments and Methods in Physics Research Section B:

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Stable transmission of slow highly charged ions through tapered glass capillary with active discharging method for sub-micron sized beams

Ikeda

Kojima

Natsume

et al. 2016

Applied Physics Letters

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Stable transmission of a sub-μm-sized Ar8+ beam of 64–104-keV energy through glass tandem optics was achieved. The optics consisted of a 4-electrode tapered capillary and a sub-μm-sized tapered capillary tip, arranged in series. To actively discharge the capillary, and thus obtain stable transmission, an electrode was applied with a mechanical relay closing at a 0.01–0.1 Hz frequency. Transmitted beams were observed for tip outlets' diameters of 0.75 and 2.0 μm. When only a 4-electrode capillary was used, a beam density enhancement with a multiplicity of 14 times of the input beam density was achieved. A transmission efficiency up to 70% was observed with good reproducibility when the electrodes were biased with appropriate voltages.

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Conceptual design and sample preparation of electrode covered single glass macro-capillaries for studying the effect of an external electric field on particle guiding

Cited by 2 publications

References 22 publications

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Stable transmission of slow highly charged ions through tapered glass capillary with active discharging method for sub-micron sized beams

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