Time evolution of ion guiding through nanocapillaries in a PET polymer

Stolterfoht, N.; Hellhammer, R.; Fink, D.; Sulik, B.; Juhász, Zoltán; Bodewits, E.; Dang, H. M.; Hoekstra, Ronnie

doi:10.1016/j.nimb.2008.10.069

Cited by 9 publications

(6 citation statements)

References 31 publications

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“…1 shows that the angular distributions of the Ar 7+ ions exhibit multiple peak structures in accordance with earlier observations [6,23]. As the charge pattern changes during the charge-up process so does the angular distribution of ions, leading to oscillations of the mean emission angle of ions.…”

Section: Experimental Results and Analysissupporting

confidence: 88%

“…The dynamic properties of the ion transmission are studied in detail, extending earlier works [6,23]. In addition, the angular distributions of transmitted ions and neutrals were recorded simultaneously with a two-dimensional, position-sensitive MCP detector.…”

Section: Introductionmentioning

confidence: 71%

“…It was prepared at the Ionenstrahllabor (ISL) in Berlin [40] and was used earlier in a series of experiments where the dynamic properties of the guided ion transmission were studied [6,23]. The thickness of the sample was 12 µm and the capillary diameter was 200 nm.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, systematic works have been started measuring and analyzing the time evolution of the angular transmission profiles [5,6,[21][22][23]. Pronounced oscillations have been observed in the angular position of the ion-transmission profiles, providing evidence for the formation of temporary charge patches produced in the interior of the capillary besides the primary charge patch created in the entrance region [6].…”

Section: Introductionmentioning

confidence: 99%

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Ion guiding accompanied by formation of neutrals in polyethylene terephthalate polymer nanocapillaries: Further insight into a self-organizing process

et al. 2010

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A relatively large yield of neutralized atoms was observed when 3 keV Ar 7+ ions were guided trough polyethylene terephthalate nanocapillaries. Time and deposited-charge dependence of the angular distribution of both the guided ions and the neutrals was measured simultaneously using a two-dimensional multichannel plate detector. The yield of neutrals increased significantly faster than that of guided ions and saturated typically at a few percent level. In accordance with earlier observations, both the yield and the mean emission angle of the guided ions exhibited strong oscillations. For the atoms, the equilibrium was achieved not only faster, but also without significant oscillations in yield and angular position. A phase analysis of these time dependencies provides insight into the dynamic features of the self-organizing mechanisms, which leads to ion guiding in insulating nanocapillaries.

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Section: Experimental Results and Analysissupporting

confidence: 88%

Section: Introductionmentioning

confidence: 71%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ion guiding accompanied by formation of neutrals in polyethylene terephthalate polymer nanocapillaries: Further insight into a self-organizing process

et al. 2010

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“…Since Stolterfoht et al first observed the ion guiding effect in insulating materials in 2002 [1], the guiding capabilities of ion beams through capillaries made of various materials have been explored experimentally worldwide. These materials include polyethylene terephthalate (PET) polymers [25][26][27], poly(tetrafluoroethylene) (PTFE) [28], Al 2 O 3 [29], SiO 2 [6,7,30], mica [31,32], Teflon [33], and polycarbonate [5,34]. Furthermore, investigations on capillary guiding effects have been conducted using not only ions but also electrons [35][36][37][38] and negative ions [39,40] as projectiles.…”

Section: Introductionmentioning

confidence: 99%

Electric field driven focusing and transport of plasma ion beams by micro-glass capillaries beyond the self-focusing limit

Barman,

Bhattacharjee

2024

J. Phys. D: Appl. Phys.

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Micro-glass capillaries emerge as an important tool for the lossless guiding and focusing of ion beams (Takao M Kojima 2018 J. Phys. B: At. Mol. Opt. Phys. 51 042001). The self-focusing mechanism of the capillaries is primarily governed by charged patches induced on their inner walls by the incident beam (Stolterfoht et al 2002 Phys. Rev. Lett. 88 133201). However, the dominance of space charge forces over self-focusing forces in intense (J ∽ 1 A/m2) ion beams establishes a self-focusing limit, posing challenges to beam focusing beyond this limit. In this work, a novel method is introduced, demonstrating electrical control over the charge patch dynamics through an externally applied bias voltage, thereby enabling the focusing of Ar ion beams beyond the self-focusing limit (Maurya et al 2019 J. Phys. D: Appl. Phys. 52 055205). Experimental results reveal that adjusting the biasing voltage allows overcoming the self-focusing limit, resulting in the generation of a high-intensity (Jout ∽ 3.05 × 105 A/m2) nano-beam (∽ 160 nm). Furthermore, electrical control is shown to enhance the performance of both straight and tapered capillaries (SC/TC), with the TC being more effective for nano-beam generation. A Particle-In-Cell (PIC) simulation code has been developed to explain the experimental results. The implications of high-intensity nano ion beams in advancing nanopatterning, nanoscale material analysis, and matter wave interferometry, underscore significant contributions to research and innovation within electronics, materials science, nanotechnology, and emerging quantum technologies.

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