Transport of accelerated electrons through dielectric nanochannels in PET films

Vokhmyanina, K. A.; Kubankin, A. S.; Myshelovka, L. V.; Zhang, H.; Kaplii, A. A.; Sotnikova, V. S.; Zhukova, M.A.

doi:10.1088/1748-0221/15/04/c04003

Cited by 10 publications

(8 citation statements)

References 16 publications

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“…It is important in the experiment to determine the energy state of electrons transmitted through the channel, in particular, to estimate the fraction of electrons whose energy loss is less than 1 keV, i.e., 10% of the initial energy of the beam electrons. Estimation was carried out by the method suggested by the authors described in detail in [17]. The principle of the method lies in the comparison of the spectra of emission generated in the metal target upon its exposure to an incident and transmitted beam of electrons 7, which is generated in the metal (copper) plate 10 upon its exposure to electrons.…”

Section: Methodsmentioning

confidence: 99%

Effect of Control of a Fast-Electron Beam using a Ceramic Channel

et al. 2021

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The possibility of controlling charged-particle beams by the use of dielectric channels (guiding) is an urgent task because of the potential of developing inexpensive autonomous controlling and focusing devices. At present, experiments with the use of ions with an energy on the order of MeV are intended for the application of radiation with a spot size of about one micrometer for material analysis, surface modification, and cell surgery. In the case of using electron beams, such a possibility is still under study. In this work, the possibility of controlling a beam of accelerated electrons by using a ceramic channel in the case of its inclination both in the vertical and in horizontal planes is demonstrated. Data about the control are obtained for the channel after irradiation of both its end faces for no less than 5 h. After such treatment, an inhomogeneous carbon-containing deposit is formed on the interior surface of the channel near its end faces. It is demonstrated that the formed deposit has no influence on the guiding properties of the channel.

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Section: Methodsmentioning

confidence: 99%

Effect of Control of a Fast-Electron Beam using a Ceramic Channel

et al. 2021

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“…Измерение спектра выполнялось для оценки доли электронов пучка, испытавших потери менее 1 keV. Метод такой оценки подробно описан в [9]. Одновременно проводится измерение тока прошедшего или прямого пучка с помощью пикоамперметра Keithley 6482 (11 на рис.…”

Section: X-ray Detectorunclassified

Исследование прохождения электронов с энергией 10 keV через керамический макроканал

Вохмянина¹,

Мышеловка²,

Сотникова³

et al. 2021

Письма В Журнал Технической Физики

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The paper presents the results of experimental studies of the passage of electrons through a ceramic macrocapillary with energy of 10 keV in the position when the axis of the channel is parallel to the axis of the incident beam. Measurements were made of the current and energy spectrum of electrons passing through the channel, depending on the value of the current of the beam incident into it and the irradiation time of the channel. The change in the transmission of electrons through the sample as a function of time after the formation of a conductive carbon deposit on the inner surface of both ends of the channel is demonstrated.

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“…Additionally, it has been demonstrated that dielectric capillaries can transmit ion beams without any change in both the ion kinetic energy and the ion charge [66]. Capillary guiding peculiarities have been also studied for electron beams, revealing similar elastic and inelastic features of scattering by the inner capillary surface, while a time evolution of transmitted intensity for electrons remains essentially different from that of ions [67][68][69][70][71][72][73][74][75][76][77].…”

Section: Introductionmentioning

confidence: 99%

Surface Channeling of Charged and Neutral Beams in Capillary Guides

Dabagov

Dik

2022

QuBS

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In this review work, the passage of charged and neutral beams through dielectric capillary guides is described from a uniform point of view of beams channeling in capillaries. The motion of beams into the hollow channels formed by the inner walls of capillaries is mainly determined by multiple small-angle scattering (reflection) and can be described in the approximation of surface channeling. It is shown that the surface interaction potential in the case of micro- and nano-capillaries is actually conditioned by the curvature of the reflecting surface. After presenting the analysis of previously performed studies on X-rays propagation into capillaries, which is valid for thermal neutrons, too, the surface channeling formalism is also developed for charged particle beams, in particular, moving in curved cylindrical capillaries. Alternative theories explaining experimental results on the beams passage through capillaries are based on simple thermodynamic estimates, on various diffusion models, and on the results of direct numerical simulations as well. Our work is the first attempt to explain the effective guiding of a charged beam by a capillary from the general standpoint of quantum mechanics, which made it possible to analytically explore the interaction potential for surface channeling. It is established that, depending on the characteristics of a projectile and a dielectric forming the channel, the interaction potential can be either repulsive or attractive; the limiting values of the potential function for the corresponding cases are determined. It has been demonstrated that the surface channeling behaviour can help in explaining the efficient capillary guiding for radiations and beams.

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Transport of accelerated electrons through dielectric nanochannels in PET films

Cited by 10 publications

References 16 publications

Effect of Control of a Fast-Electron Beam using a Ceramic Channel

Effect of Control of a Fast-Electron Beam using a Ceramic Channel

Исследование прохождения электронов с энергией 10 keV через керамический макроканал

Surface Channeling of Charged and Neutral Beams in Capillary Guides

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