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螺旋波激发等离子体源的原理和应用 总被引:2,自引:0,他引:2
介绍了一种低气压,高密度等离子体源-螺旋波激发等离子体源,讲述了它的结构位形,该离子源在实际中的应用以及目前研究状况。 相似文献
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利用高斯分布拟合HT-6M托卡马克Hα线型,得出了由反射进入等离子体中的氢原子、氢分子离解后产生的氢原子,以及电荷交换产生的氢原子辐射Hα谱线的份额,由Doppler频移和展宽分别得出它们的入射速度和离子温度.在简化模型下讨论了氢原子的输运行为,得出了氢原子的密度分布和体发射系数,以及入射速度大小对粒子约束时间的影响,并与实验数据进行比较.由中性氢原子能量分布得出发生在边界的分子过程是氢分子的离解激发和电离离解
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A program is developed to calculate the ion energy distributions (IEDs) of Ar2^+ making use of a simplified kinetic model with a combination of Monte Carlo method. Several coefficients are used to realize good match between the calculated and measured results. Some important assumptions are confirmed: argon excimer ions have short lifetime, hence they are formed in a short range before the collecting electrode. The excimer ions that encounter collisions will be discarded because they turn to other ion species after they collide with argon atoms. From the calculated results some plasma parameters such as the cross section or neutral density in discharge could be evaluated. 相似文献
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实验研究了 ITER H2/He 辉光放电壁处理(GDC)系统的电极合理的间隙绝缘参数及标定辉光过程中
沉积在电极头部的热负载。进行了 H2/He 击穿电压特性试验,在 ITER GDC 预期的壁离子电流密度条件下研究了
H2/He 辉光放电电压和试验电极上热负荷与压强的关系、试验电极启辉耐受特性、试验电极温度与热负荷的关系
以及在不同区域辉光放电的气压特性。介绍了 H2/He 放电期间在电极及其附近区域的溅射和沉积的检测结果以及
对间隙绝缘的影响。为 ITER 辉光放电壁处理系统的设计和运行提供参考。 相似文献
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We numerically simulate the temporal evolutions of the densities of charged and neutral species in a plasma generated with repetitively pulsed discharge in atmospheric environment at 60 km altitude. The particles are divided into three categories according to their temporal behaviour. All charged particles exhibit oscillations with the same frequency as the driven power. Densities of elements O, N and H increase in a long-time scale. Densities of O3 and NO increase firstly and then decrease at t=0.65s; in particular, they have very similar density evolution profiles to each other. 相似文献
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