Electrostatic plasma lens for focusing negatively charged particle beams

Goncharov, A.; Dobrovolskiy, A.; Dunets, S. M.; Litovko, I.; Gushenets, V. I.; Окс, Е. М.

doi:10.1063/1.3675387

Cited by 13 publications

(10 citation statements)

References 4 publications

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“…The comparison shows that beam compression is stronger, and beam divergence is less in PL case than in ML case. The experimental results [12,13] confirm our simulations. The lens can be used even more effectively for negative ions beam focusing.…”

Section: Negative Charge Particle Beams Focusing On Space Charge Plassupporting

confidence: 82%

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Modeling of Novel Plasma-Optical Systems

Litovko¹,

Goncharov²

2019

Plasma Science and Technology - Basic Fundamentals and Modern Applications

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This is the review of the current status an ongoing theoretical, simulations and some experimental researches of the novel plasma dynamical devices based on the axialsymmetric cylindrical electrostatic plasma lens (PL) configuration and the fundamental plasma-optical principles of magnetic electron isolation and equipotentialization magnetic field lines. The crossed electric and magnetic fields plasma lens configuration provides us with the attractive and suitable method for establishing stable plasma discharge at lowpressure. Using plasma lens configuration in this way some novel cost-effective, lowmaintenance, high-reliability plasma devices using permanent magnets were developed. In part, it was proposed and created device for ion treatment and deposition of exotic coatings, device for filtering dense plasma flow from micro-droplets, electrostatic plasma lens for focusing and manipulating wide aperture, high-current, low-energy, heavy metal ion plasma flow, and the effective lens was first proposed for manipulating high-current beams of negatively charged particles (negative ions and electrons). Here we mainly describe models and results of theoretical consideration and simulation of the novel generation cylindrical plasma devices.

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Section: Negative Charge Particle Beams Focusing On Space Charge Plassupporting

confidence: 82%

“…Numerical simulations results show clearly that for electron beam current less than 1A the electrostatic beam focusing occurs [12,13]. The results of simulation for space charge plasma lens and magnetic lens (ML) with the same magnetic field are shown in Figure 5.…”

Section: Negative Charge Particle Beams Focusing On Space Charge Plasmentioning

confidence: 99%

Modeling of Novel Plasma-Optical Systems

Litovko¹,

Goncharov²

2019

Plasma Science and Technology - Basic Fundamentals and Modern Applications

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“…As a result, the plasma lens represents a combination of electrostatic and magnetic lenses. In this mode, there is additional electrostatic focusing of the transported electron beam [6,8].…”

Section: Experimental Set Up and Research Resultsmentioning

confidence: 99%

Low energy electron beam transport with a space charge lens

Gushenets

Goncharov

Dobrovolskiy

et al. 2014

2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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Pulsed electron beams with high (1÷100 J/cm2) energy density are used in various processes involved in structural and functional modification of surface properties of materials and products. One of the main problems of successful electron beam application is to develop reliable and efficient methods of transport and manipulation of electron beams with high energy density. The paper presents new experimental and theoretical research results on wide-aperture (diameter 6 cm) lowenergy (up to 40 kV) high-current (up to 100 A) electron beams focused and manipulated with a space-charge lens.

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“…The opportunity of the creation of a space charge lens for focusing beams of negative ions has been shown also. In this case, the cloud of a positive space charge owing to ionization of residual gas by fast negative ions in a lens is formed, and formed electrons leave the area of a lens as the negative potential is applied on the central electrode [13].…”

Section: Resultsmentioning

confidence: 99%

Space Charge Lenses for Intensive Ion Beams Formation

Hasanov

Orudjev²,

Gurbanov

et al. 2019

Acta Phys. Pol. A

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The space charge lenses intended for focusing of ion beams have been proposed for the first time by D. Gabor in 1947. Their optical force exceeds on 2 orders of magnitude optical force of electrostatic and on 4 orders optical force of magnet lenses with other things being equal. The basic advantage of a Gabor lens, besides high optical force, consists in ability to focus intensive ion beams as an ion space charge does not deform initial distribution of potential in a lens. The distribution of focusing potential is created by a space charge of compensating electrons. The theoretical and experimental research of Gabor lenses has led to creation of the plasma optics-a new section of plasma physics. These lenses are successfully applied to focusing the high current and of high energy ion beams, and beams of heavy ions also. The use of space charge lenses is of interest for additional heating of thermonuclear plasma in installations TOKAMAK at injection of intensive ion beams with their subsequent neutralization.

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Electrostatic plasma lens for focusing negatively charged particle beams

Cited by 13 publications

References 4 publications

Modeling of Novel Plasma-Optical Systems

Modeling of Novel Plasma-Optical Systems

Low energy electron beam transport with a space charge lens

Space Charge Lenses for Intensive Ion Beams Formation

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