Transmission of 4.5 keV <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si14.gif" overflow="scroll"><mml:mrow><mml:msup><mml:mrow><mml:mtext>Ar</mml:mtext></mml:mrow><mml:mrow><mml:mn>9</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> ions through a single glass macro-capillary

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

doi:10.1016/j.nimb.2008.10.080

Cited by 79 publications

(14 citation statements)

References 17 publications

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“…Stable equilibrium was never reached even for large integrated charge due to sharp oscillations in the transmitted intensity, indicating a mechanism of sudden discharge followed by slower recovery. The features are different from what has been observed experimentally so far for electrons [11,12] or for slow positive ions [1][2][3][4][5][6][7][8][9][10]. Also, our results for this single macroscopic-sized glass capillary are contrary to simulations for electron guiding through an array of polyethylene terephthalate (PET) nanocapillaries [14].…”

Section: Introductioncontrasting

confidence: 99%

“…Studies with insulating nanocapillary foils suggest that the guiding effect for ions should also exist in single glass capillaries of macroscopic dimensions [7], an effect that was observed in recent measurements [8,9]. In fact, investigations [10] with glass capillaries have observed multiple oscillations of the transmitted beam position on a position sensitive detector, suggesting the dynamics of the charging process are in agreement with a charge patch model.…”

Section: Introductionmentioning

confidence: 53%

“…However, compared to the enormous amount of research for slow ions [1][2][3][4][5][6][7][8][9][10], so far little has been done to investigate electron transmission dynamics, experimentally [11][12][13] or theoretically [14]. Consequently, many questions regarding the transmission process remain unanswered.…”

Section: Introductionmentioning

confidence: 99%

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Time evolution of electron transmission through a single glass macrocapillary: Charge build-up, sudden discharge, and recovery

et al. 2011

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The time (i.e., integrated charge) dependence of electron transmission through a single glass macrocapillary was studied for incident 500-and 800-eV electrons at different capillary tilt angles. As the transmitted intensity goes to equilibrium, the centroid energies and corresponding energy values of the full width at half maximum of the transmitted electron distributions are found to vary in phase and out of phase with the transmitted intensity, respectively. Stable equilibrium was not fully reached even for large integrated charge due to sharp oscillations in the transmitted intensity. Plots of the recovery charging curves after breakdown show larger charge constants for the first recovery, but subsequently show smaller values that are about equal to one another for a given beam energy. Previously, such oscillations and recovery have not been reported for electrons.

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Section: Introductioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 53%

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Time evolution of electron transmission through a single glass macrocapillary: Charge build-up, sudden discharge, and recovery

et al. 2011

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“…Moreover, electrons were used as projectiles guided through capillaries in Al 2 O 3 [17] and PET [18]. Also, single-glass capillaries [19][20][21][22] have been applied with the intention to produce submicrometer sized beams. Moreover, theoretical studies based on simulations and ab initio calculations have provided detailed insights into guiding mechanisms [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Evidence of blocking effects on 3-keV Ne7+ions guided through nanocapillaries in polycarbonate

et al. 2011

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We studied the dynamic properties of ion guiding through nanocapillaries etched in insulating polycarbonate (PC). Capillaries with diameters of 95 and 165 nm and a length of 10 µm were used. In a further sample, the capillaries had a diameter of 175 nm and a length of 30 µm. A few additional measurements were made using capillaries in polyethylene terephthalate (PET). The temporal evolution of the intensity and the angular distribution of the transmitted ions were studied by measuring transmission profiles as a function of the charge deposited on the sample surface. The tilt angle of the capillary axis was varied from 0 • to 5 • . The mean emission angle of the transmission profiles exhibit pronounced oscillations, similarly as in previous measurements using PET. However, for PC, nearly an order of magnitude more charge needs to be inserted into the capillaries to accomplish the oscillations. In contrast to PET, with PC, we observed a strong decrease of the profile intensities with irradiation time. This observation provides evidence of blocking effects on the ions, which are likely to be due to a repulsive field produced by significant charge deposition inside the PC capillaries.

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“…The phenomenon involves the charging up of inner capillary walls, which prevents a significant fraction of the ions getting close to the walls; that is, they mostly preserve their initial charge state during the transmission. This "fully elastic" guiding has been found to be significant in capillaries of different sizes and aspect ratios, made from different insulator materials, in a wide range of impact ion energies and charge states [8][9][10][11][12][13][14][15][16][17][18][19][20]. Therefore, it is justified to consider the ion-guiding effect as an example for a self-organizing process.…”

Section: Introductionmentioning

confidence: 99%

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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Transmission of 4.5 keV Ar9+ ions through a single glass macro-capillary

Cited by 79 publications

References 17 publications

Time evolution of electron transmission through a single glass macrocapillary: Charge build-up, sudden discharge, and recovery

Time evolution of electron transmission through a single glass macrocapillary: Charge build-up, sudden discharge, and recovery

Evidence of blocking effects on 3-keV Ne7+ions guided through nanocapillaries in polycarbonate

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

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