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等离子体参数的提高及约束改善是受控核聚变主要的研究课题之一。对于工作气体为氢和氘的等离子体,对H_α/Dα辐射的观测十分重要。氢原子由一个原子核和一个电子组成,在可见光范围,巴尔末线系H_α656.28nm辐射是最强的线,激发能E=12.09eV,跃迁2p·~2po～3d·~2D,一个光子能量hv=3.03×10~(-19)W。电离能E_∞=13.6eV。HL-1等离子体参数为R=102cm,α=17～26cm,电子温度T_e=0.3～1.5keV,
The improvement of plasma parameters and the improvement of the confinement are one of the main research topics of controlled nuclear fusion. For plasmas whose working gas is hydrogen and deuterium, the observation of the H_α / Dα radiation is very important. The hydrogen atom is composed of one nucleus and one electron. In the visible range, the radiation in the Barr-line H_α656.28nm is the strongest line, the excitation energy E = 12.09eV, the transition 2p ~ 2po ~ 3d ~ 2D, a photon energy hv = 3.03 × 10 ~ (-19) W. Ionization energy E_∞ = 13.6eV. HL-1 plasma parameters are R = 102cm, α = 17-26cm, electron temperature T_e = 0.3 ~ 1.5keV,