Magnetic field design for a Penning ion source for a 200 keV electrostatic accelerator

Fathi, Atefeh; Feghhi, S.A.H.; Sadati, S. M.; Ebrahimibasabi, E.

doi:10.1016/j.nima.2017.01.028

Cited by 16 publications

(4 citation statements)

References 6 publications

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“…Источники ионов Пеннинга (ПИИ), несмотря на длинную историю исследований и совершенствования, продолжают оставаться одним из наиболее востребованных типов ионных источников (ИИ), применяемых, в частности, в миниатюрных линейных ускорителях (МЛУ) [1,2]. В этой связи оптимизация различных параметров ПИИ крайне актуальна [2][3][4][5][6][7][8][9][10][11], несмотря на длительную историю исследований в данной области [2]. К числу таких параметров следует отнести: физические (анодное напряжение, давление рабочего газа, индукция магнитного поля) и геометрические (радиус и длина анода, расстояние между катодами, диаметры катодов, диаметр экстрагирующего отверстия, форма антикатода).…”

Section: Introductionunclassified

“…В экспериментальных работах [3][4][5][6][7][8][9][10][11][12][13][14][15][16] описано большое количество компактных ПИИ, разрабатываемых специально для МЛУ, сильно отличающихся как по своим геометрическим параметрам, так и физическим характеристикам (анодное напряжение, величина и конфигурация магнитного поля и т. д.).…”

Section: Introductionunclassified

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Оценка Тока Разряда И Извлекаемого Тока Из Пеннинговского Ионного Источника

Лобов,

Мамедов,

Мамедов

et al. 2023

Журнал Технической Физики

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A Penning ion source for a miniature linear accelerator is investigated. A discharge current dependence on the anode voltage for several pressure values is calculated. The estimates are based partly on simplified theoretical models, partly on experimental data obtained on previous work. The ion current component is selected from the obtained dependences and the ion current component value, extracted from the ion source, is estimated. The extracted current dependences and the ion extraction efficiency coefficient value on the voltage at the anode at different source output aperture diameters are calculated.

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Section: Introductionunclassified

Оценка Тока Разряда И Извлекаемого Тока Из Пеннинговского Ионного Источника

Лобов,

Мамедов,

Мамедов

et al. 2023

Журнал Технической Физики

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“…The experiments described in most recent [5][6][7][8][9][10] use the permanent cylindrical magnets around the anode and assume that magnetic field is homogeneous within the discharge cell and directed strictly along the axis. At the same time, the references devoted to PIS development for miniature linear accelerators [11][12][13][14][15][16][17] demonstrate a trend to use the end magnets.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field design for miniature pulse Penning ion source

Мамедов

Gubarev

Zverev

et al. 2020

Plasma Sources Sci. Technol.

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Magnetic field configuration for a miniature pulse Penning ion source was designed in this work. The amplitude-time characteristics of discharge and extracted currents were investigated as a function of gas pressure for various magnetic field magnitude and configuration An effect of magnetic field configuration on the Penning’s discharge modes and characteristics of the extraction current impulse were experimentally shown. Stable operation modes of the ion source were found in this work. Also the appropriate ranges of working gas pressure and magnetic field configuration were demonstrated, at which the current pulse of the extracted ions had a quasi-rectangular form. For better understanding real magnetic fields distributions of within the discharge cell magnetic field have been calculated in COMSOL software.

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“…e electron trajectory was modified by the magnetic field as a result of the Lorentz force, thereby increasing the length of the electron trajectory through the ionization chamber. Previous studies have shown the critical role of magnetic field values in electron and ion trajectories for optimizing ionization [15][16][17]. e EI ionization source not only generates molecular ions but also introduces numerous ion dissociation processes due to the excess energy imparted to the neutrals.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

Tian

Gao

et al. 2020

Journal of Analytical Methods in Chemistry

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An electron impact ion source-adopted magnetic field-enhanced technology has been designed for enhancing the electron intensity and the ionization efficiency. Based on the ion optic focus mechanism, an electron impact ionization source was designed, and the electron entrance into the ionization chamber was designed with a hollow cylinder structure to improve the ion extraction efficiency. Numerical simulation and optimal geometry were optimized by SIMION 8.0 to provide higher electron intensity and ion transmission efficiency. To improve the electron intensity, the influence of the filament potential and magnetic intensity was investigated, and the values of 70 eV and 150 Gs were chosen in our apparatus. Based on the optimal parameters, the air in the lab and oxygen gas was detected by the homemade apparatus, and the ion intensity was detected in the positive and negative ion modes, respectively. The homemade electron impact ion source apparatus has the potential to enhance ionization efficiency applied in the mass spectrometer ionization source.

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Magnetic field design for a Penning ion source for a 200 keV electrostatic accelerator

Cited by 16 publications

References 6 publications

Оценка Тока Разряда И Извлекаемого Тока Из Пеннинговского Ионного Источника

Оценка Тока Разряда И Извлекаемого Тока Из Пеннинговского Ионного Источника

Magnetic field design for miniature pulse Penning ion source

Numerical Simulations and the Design of Magnetic Field-Enhanced Electron Impact Ion Source with Hollow Cylinder Structure

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