Abstract
In this work, we direct our attention to the study of the effect of a nonuniform and strong magnetic field on the quantum properties of ions in plasma. We have assumed that the strong magnetic field is a sum of two magnetic fields: one, the most intense, has a toroidal geometry, whereas the other of less intensity (about the third of the first) is poloidal. Regarding the quantum properties, we have focused our attention on obtaining the corresponding eigenenergy of n hydrogen-like ion in this nonuniform magnetic field. Using the obtained eigenenergy, we investigated the spectral line shape (Lyman-alpha) of three types of ions: He+, C5+, and Ar17+ for different magnetic field magnitudes. In this study, we considered only Doppler and electronic Stark broadening of the spectral line shapes.
Highlights
The confinement of plasmas by adequate magnetic fields is the most highly developed and reached technique to obtain a controlled fusion
It is shown that this confinement is not quite sufficient and to further minimize the leakage of particles towards the walls, the field lines must be helical along the torus. This is achieved by adding to the toroidal field another magnetic field, called a poloidal field, which is perpendicular to it
Feldman et al discussed the measurement of the poloidal magnetic field in a tokamak plasma from the Zeeman splitting and polarization of the magnetic dipole radiation from heavy ions [1,2]
Summary
The confinement of plasmas by adequate magnetic fields is the most highly developed and reached technique to obtain a controlled fusion. The positions of emission of beryllium-like oxygen ions in the core region as well as the hydrogen atoms in the boundary region of the limiter shadow were measured by means of the difference of the Zeeman patterns in the spectral shape in the poloidal section of the TRIAM-M1 fusion device [9]. In 2017, and based on passive spectroscopy, the Dα atomic emission spectra in the boundary region of the plasma were measured by a high resolution Optical Spectroscopic Multichannel Analysis (OSMA) system in EAST tokamak by Wei Gao et al [18]. In this same section, we conduct a discussion.
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