High current density ion beam formation from plasma of electron cyclotron resonance discharge

Abstract

This article describes the research effort to obtain a quality ion beam with high currents from the dense plasma of the pulsed electron cyclotron resonance discharge pumped with high-power millimeter-wave radiation. The results of the experiments aimed at optimization of the two-electrode system for ion extraction are presented. Under the conditions, when the density of the ion current in the vicinity of the plasma electrode was 65–75 mA/cm2, the normalized emittance of the ion beam did not exceed 0.19 π mm mrad.

Pulsed neutron generator with a point-like emission area based on a high-current ECR source of deuterium ions

“…It was numerically shown for SMIS 37 setup conditions [8,9] that ion beam can be focused to the spot of 100 µm. Suggested approach uses the SMIS 37 high-current ion source [10][11][12][13][14][15] based on an electron cyclotron resonance discharge sustained by high-power microwave gyrotron radiation in open magnetic traps.…”

“…Experimental and theoretical studies of high-current deuterium ion beams focusing extracted from the dense plasma of a quasi-gasdynamic ECR ion source are described in [10][11][12][13][14][15][16][17][18]. The IBSimu code [19] was used for numerical evaluation of optimal conditions.…”

Status of new developments in the field of high-current gasdynamic ECR ion sources at the IAP RAS

“…Investigations of pulsed ECR discharge in an open magnetic trap under conditions of powerful ECR heating with gyrotron mm-waveband radiation were carried out over the last 20 years at the Institute of Applied Physics (IAP RAS, Nizhniy Novgorod, Russia) [1][2][3][4][5]. In the beginning the work was devoted to development of a high frequency ECR source of multi-charged ions with outstanding parameters of plasma heating (37.5 GHz, 100 kW).…”

A fluid model for ion heating due to ionization in a plasma flow

“…Recently, the concept of quasi-gas-dynamic confinement was successfully utilized in a gas-dynamic ECR source of multicharged ions SMIS 37. [12][13][14][15][16][17] The latest experiments on the SMIS 37 stand demonstrated rather high values of the extracted ion beam temperature 17 that cannot be explained by means of the collisional heating mechanisms that is the collisional energy transfer from hot electrons to cold ions. In this paper, we demonstrate that ion heating due to ionization in a plasma flow can result in the ion temperature comparable to that measured in the SMIS 37 experiments.…”