Exploring new aspects and practical applications of capillary guiding of charged particle beams

Alshammari, Marzook S.; Alshammari, K.; Cudd, A.; DuBois, R. D.; Tőkési, K.

doi:10.1016/j.nimb.2014.11.084

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…It is well known that electric fields produced by charge patches can significantly affect the flight path of the ions. Similar oscillations in transmitted currents have been observed for glass macrocapillaries [26], teflon macrocapillaries [27] and also for transmission through parallel glass plates [28]. In this context, our data indicate a preferential deflection of ions that pass closer to the walls as compared to the center of the capillary.…”

Section: Resultssupporting

confidence: 87%

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: Resultssupporting

confidence: 87%

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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“…In a phenomenon called the guiding effect, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] energetic ion beams can pass through various insulating capillaries without losing their initial energy and=or charge state. The guiding effect was first discovered by Stolterfoht et al 1) upon transmitting 3 keV Ne 7+ ions through insulating capillary targets.…”

Section: Introductionmentioning

confidence: 99%

Guiding of 4 MeV C⁺ and C⁴⁺ ion beams using cylindrical glass channel

Motohashi

Miyawaki

Saitoh

et al. 2017

Jpn. J. Appl. Phys.

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To investigate how the initial charge state affects the transmission of 4 MeV C+ and C4+ ion beams through a channel, we measured the transmission probability and kinetic energy of atoms and ions that pass through a cylindrical channel in glass, such as a narrow gap between a cylindrical convex glass surface and a cylindrical concave glass surface. Kinetic energy distributions were measured at three typical observation angles φ with the cylindrical glass channel tilted at angles θ = −3, −2, −1, 0, 1, 2, and 3° with respect to the incident ion beam. The ion beam is guided in both initial charge states; that is, the transmission maintains the initial kinetic energy at tilt angles greater than the geometric limit. However, no marked difference in transmission appears between the two initial charge states.

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“…These studies have been summarized so far in three reviews during the last years [15][16][17]. For the study of the special HCI transport, single tapered and conical shaped glass capillaries were also introduced [18][19][20][21][22]. Along this line, later, the new research interest focused on the light particle transport through capillaries and as projectile electrons [23][24][25], and other exotic particles, like positrons were used [26].…”

Section: Introductionmentioning

confidence: 99%

Guiding as a General Consequence of the Charged Particle Interaction with the Inner Surface of an Insulator Capillary—Guiding of 1 MeV Proton Microbeam through Polytetrafluoroethylene Macrocapillary

Tőkési,

Rajta,

Nagy

et al. 2023

Atoms

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The transmission of energetic, 1 MeV proton microbeam through a single, cylindrical shaped, macrometer-sized polytetrafluoroethylene capillary was studied experimentally. The capillary axis was tilted with respect to the axis of the incident ion beam. The tilting, the aspect ratio of the capillary and the small beam divergence disabled the geometrical transmission of the beam through the target. The intensity, energy, deflection and charge state of the transmitted beam were investigated. We found that the pure guided transmission of a MeV/amu energy ion beam is observable. We clearly identified three completely different stages during the guiding process according to the measured energy distribution of transmitted particles. At the beginning the transmission intensity was low and only inelastic contributions with energy lower than 1 MeV were found in the spectrum. Later, in the second stage, the elastic peak appeared and became more and more significant. Finally, when the stable transmission evolved, only the elastic peak was present and the inelastic area was totally absent as a direct consequence of the ion guiding and as a result of the charged particle interaction with a charged inner surface of the insulator capillary.

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Exploring new aspects and practical applications of capillary guiding of charged particle beams

Cited by 5 publications

References 15 publications

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Guiding of 4 MeV C⁺ and C⁴⁺ ion beams using cylindrical glass channel

Guiding as a General Consequence of the Charged Particle Interaction with the Inner Surface of an Insulator Capillary—Guiding of 1 MeV Proton Microbeam through Polytetrafluoroethylene Macrocapillary

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Exploring new aspects and practical applications of capillary guiding of charged particle beams

Cited by 5 publications

References 15 publications

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Ion transport through macrocapillaries – Oscillations due to charge patch formation

Guiding of 4 MeV C+ and C4+ ion beams using cylindrical glass channel

Guiding as a General Consequence of the Charged Particle Interaction with the Inner Surface of an Insulator Capillary—Guiding of 1 MeV Proton Microbeam through Polytetrafluoroethylene Macrocapillary

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Guiding of 4 MeV C⁺ and C⁴⁺ ion beams using cylindrical glass channel