First Experiments on the Investigation of the Generation of Negative Hydrogen Ions with the Use of CW ECR Discharge at the GISMO Facility

R. L. Lapin; Лапин Р. Л.; V. A. Skalyga; Скалыга В. А.; I. V. Izotov; Изотов И. В.; S. V. Golubev; Голубев С. В.; A. F. Bokhanov; Боханов А. Ф.; E. M. Kiseleva; Киселева Е. М.; S. S. Vybin; Выбин С. С.

doi:10.31857/S036729212260090X

First Experiments on the Investigation of the Generation of Negative Hydrogen Ions with the Use of CW ECR Discharge at the GISMO Facility

Authors: Lapin R.L.¹, Skalyga V.A.¹, Izotov I.V.¹, Golubev S.V.¹, Bokhanov A.F.¹, Kiseleva E.M.¹, Vybin S.S.¹
Affiliations:
1. Institute of Applied Physics, Russian Academy of Sciences
Issue: Vol 49, No 2 (2023)
Pages: 193-197
Section: LOW TEMPERATURE PLASMA
URL: https://journal-vniispk.ru/0367-2921/article/view/139532
DOI: https://doi.org/10.31857/S036729212260090X
EDN: https://elibrary.ru/NWUITG
ID: 139532

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Abstract

The results of the first experiments on studying the volume production of negative hydrogen ions using a dense gasdynamic plasma of an electron cyclotron resonance (ECR) discharge sustained by continuous wave (CW) microwave radiation from a gyrotron (28 GHz/5 kW) are described. The ECR hydrogen discharge is ignited in a vacuum chamber placed in a magnetic field created by a system of two consecutive magnetic traps. The system parameters are optimized to obtain the maximum average current density of negative ions at the level of j = 25 mA/cm2. The study involves the determination of the negative ion production area, me-asurement of the current density dependences on gas pressure and microwave radiation power, and demonstration of potential optimization opportunities for extraction voltage.

Keywords

microwave radiation of a gyrotron, hydrogen ECR discharge, volume negative hydrogen ion production

References

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