By taking soil samples as targets,a small carbon chamber was used to perform the spatial confinement for high energy laser induced plasma to improve the quality of laser-induced breakdown spectroscopy.A high energy laser was used to ablate the soil samples,a spectral analysis system consisting of a modular multifunctional grating spectrometer and a CCD detector was adopted to record the spectral information,and the changes of the radiation intensities of laser-induced soil plasma with and without the small carbon chamber were studied.Then,the electron temperature and electron density of the plasma were measured by the spectroscopic methods to explain the mechanism of irradiation enhancement of the plasma.Experimental results show when the laser plasma is confined by the small carbon chamber,the spectral line intensities of the sample elements Mn,K,Fe and Ti increase about 90.77％,101.71％,104.27％ and 60.77％ than that without the small carbon chamber,and spectral signal-to-noise ratio raises around 54.29％,55.30％,59.37％ and 38.80％,while the electron temperature and electron density of the plasma enhance about 1684 K and 1.8 × 1016 cm-s,respectively.These results demonstrate that the spectral intensities and signal-to-noise ratio of the laser-induced plasma can be improved effectively by spatial confinement for the high energy laser induced plasma,which is an effective means for detecting the low-content elements in soil samples.%以土壤样品为靶,提出利用小型碳室对高能量激光诱导等离子体进行空间限制来提高等离子体发射光谱质量.采用高能量脉冲激光烧蚀土壤样品,利用组合式多功能光栅光谱仪和CCD探测器等组成的光谱分析系统记录光谱信息,研究了激光诱导等离子体在有或无碳室约束条件下辐射强度的变化；通过光谱学测量方法求得电子温度和电子密度,用以解释等离子体辐射增强的机理.实验结果显示,当利用小型碳室约束激光等离子体时,土壤样品元素Mn,K,Fe和Ti的光谱线强度比无碳室约束时分别提高了90.77％,101.71％,104.27％和60.77％；光谱信噪比分别提高了54.29％,55.30％,59.37％和38.80％；等离子体的电子温度和电子密度分别提高了1684 K和1.8×1016 cm-3.得到的结果表明,利用空间约束方法能够有效地提高激光诱导等离子体的发射光谱强度和信噪比,为利用激光诱导击穿光谱技术检测物质中低含量成分奠定了基础.
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机译：用等离子体约束实现重力场的动态控制热核聚变（TLTS）方法，通过热辐射等离子体绝缘的壁反应堆防止中子辐射并节省磁场和等离子体的混合，使用旋转磁场的异步磁惯性约束反应堆（AMITYAR和HFM）为实施该方法，在该反应器中点燃热核反应的方法，爆炸式等离子发生器（VIP）的实施方法，以及具有HFM的特立普安瓿，以实现D + T反应和具有超高温热度的HFM D +3НЕ和1Н+11В的高温反应
