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首页> 外文期刊>Review of Scientific Instruments >Optimization of a fast deuterium diagnostic method based on visible energetic 3He spectroscopy for high electron density plasmas
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Optimization of a fast deuterium diagnostic method based on visible energetic 3He spectroscopy for high electron density plasmas

机译：Optimization of a fast deuterium diagnostic method based on visible energetic 3He spectroscopy for high electron density plasmas

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摘要

Fast ions play a crucial role in plasma heating, and their behavior in the plasma must be accurately understood. A diagnostics method based on charge exchange emission from the n = 4 − 3 transition (λ0 = 468.6 nm) of energetic 3He produced by the deuteron–deuteron reaction has been proposed as a for fast deuterons with energies in the order of MeV. The proposed method has the following advantages: No beam emission interferes with the spectra, the direction of the measuring line of sight, and the injection angle of the diagnostic beam can be freely determined. In previous studies, due to competing bremsstrahlung, it was expected that the proposed method will not be practical in the case of high electron density operation. This paper makes the proposed method available for measurement even at high electron densities by optimizing the measurement line of sight direction and the diagnostic beam incidence angle. This allows an electron density five times larger than the range of applications shown in previous studies. This result will contribute to measure of DT alpha in ITER.

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