Wide-aperture dense plasma fluxes production based on ECR discharge in a single solenoid magnetic field

Skalyga, V. A.; Golubev, S. V.; Izotov, I. V.; Shaposhnikov, R. A.; Razin, S. V.; Сидоров, А. В.; Bokhanov, A. F.; Kazakov, M. Yu.; Lapin, R. L.; Vybin, S. S.

doi:10.1063/1.5128458

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…The electric field on the order of 1 MV/cm would have been needed to form the ion beam, which is not technically feasible. Despite the plasma being highly collisional, its flux follows the magnetic field in the region of interest [31], allowing for easy way to tune the flux density in the extraction region by changing its position relative to the magnetic field. Thus, the plasma electrode was placed 100 mm downstream the beam line, where the trap magnetic field and, therefore, the plasma flux density decreased by a factor of 7 down to 1 A/cm 2 , which falls within the voltage range available at the facility (up to 100 kV).…”

Section: Methodsmentioning

confidence: 99%

Status of a point-like neutron generator development

Golubev¹,

Skalyga²,

Izotov³

et al. 2021

J. Inst.

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In this paper we report on a high current density ion beam profile diagnostics with a slit-based system as a reliable method, capable of high thermal load applications. The task arose in frames of a point-like neutron source development for neutron radiography. In previous research, it was suggested to construct such a system as a D-D neutron generator based on the high current gasdynamic ion source, which utilises the plasma of electron cyclotron resonance discharge sustained by powerful millimeter wave gyrotron radiation. This device is able to produce focused D+ beams with a characteristic diameter of 1 mm, total current above 100 mA, and current density at a level of several A/cm2. Study of such intense beams profile to obtain the best focusing efficiency and minimize neutron producing area appeared to be a challenging task. The paper also demonstrates the possibility of fast neutron imaging with a point-like powerful neutron generator (neutron yield on the level of 1010 s−1).

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Section: Methodsmentioning

confidence: 99%

Status of a point-like neutron generator development

Golubev¹,

Skalyga²,

Izotov³

et al. 2021

J. Inst.

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“…Neutrons were generated through D−D-reaction with the yield of fast neutrons (2.5 MeV) 1.2 • 10 10 s −1 at the beam current 50 mA and energy 75 keV in pulsed mode with pulse width of about 1 ms [26]. This neutron generator is considered not only for BNCT applications [22,27], but also for neutron tomography [28][29][30]26].…”

Section: Introductionmentioning

confidence: 99%

Ion beam source upgrade of the neutron source at IAP RAS

Skalyga

et al. 2022

Technical Physics

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The results of the ion source of the neutron generator upgrade, which makes it possible to operate in a CW mode, are presented. A magnetic trap consisting of permanent magnets (NdFeB) was developed. A 3-electrode extraction system equipped with a magnetic lens was used to extract the deuterium ion beam. Calculations are made for the formation of a deuterium ion beam with a current over 500 mA and an energy of 100 keV with practically no losses in the extraction system. Keywords: extraction system, magnetic trap, neutron generator, ion beam.

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Gasdynamic electron cyclotron ion sources: Basic physics, applications, and diagnostic techniques

Skalyga

Izotov

Golubev

et al. 2022

Review of Scientific Instruments

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The gasdynamic electron cyclotron resonance (ECR) ion source is a type of the device in which the ionization efficiency is achieved primarily due to a high plasma density. Because of a high particle collision rate, the confinement is determined by a gasdynamic plasma outflow from a magnetic trap. Due to high efficiency of resonant heating, electrons gain energy significantly higher than that in inductively or capacitively coupled plasmas. As a consequence of such a parameter combination, the gasdynamic ECR plasma can be a unique source of low to medium charged ions, providing a high current and an ultimate quality of an ion beam. One of the most demanded directions of its application today is a development of high-current proton injectors for modern accelerators and neutron sources of different intensities. Special plasma parameters allow for the use of diagnostic techniques, traditional for multiply charged ECR plasmas as well as for other types of discharges with a high plasma density. Among the additional techniques, one can mention the methods of numerical simulation and reconstruction of the plasma density and temperature from the parameters of the extracted ion beams. Another point is that the high plasma density makes it possible to measure it from the Stark broadening of hydrogen lines by spectroscopy of plasma emission in the visible range, which is a fairly convenient non-invasive diagnostic method. The present paper discusses the main physical aspects of the gasdynamic ECR plasma, suitable diagnostic techniques, and possibilities and future prospects for its various applications.

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Wide-aperture dense plasma fluxes production based on ECR discharge in a single solenoid magnetic field

Cited by 7 publications

References 10 publications

Status of a point-like neutron generator development

Status of a point-like neutron generator development

Ion beam source upgrade of the neutron source at IAP RAS

Gasdynamic electron cyclotron ion sources: Basic physics, applications, and diagnostic techniques

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