共查询到16条相似文献,搜索用时 46 毫秒
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超短脉冲激光与固体靶相互作用产生超热电子,由于激光能量较低(10 mJ),所以产生的超热电 相似文献
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物理学家利用高能粒子加速器进行了多方面的研究,但高能粒子加速器庞大且耗资巨大。随着超短超强激光的发展,现在的激光的功率密度可达到10^22W/cm^2。许多实验室利用不同功率密度的激光与固体靶、薄膜靶及气体等相互作用,进行加速产生高能粒子的研究。其中,利用超短超强激光与薄膜薄相互作用加速产生质子是一重要的研究课题,利用超热电子加速产生超热电子, 相似文献
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无预脉冲、P极化、10MW/cm2的红外(800nm)激光以45°辐照到靶面上,对于固体(Cu、A1)靶,超热电子的产生主导机制为真空加热,实验数据列于表1。 相似文献
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1 Introduction X-ray spectra emitted from hot dense plasmas pro- vide an important diagnostic tool to infer local plasma parameters, particularly the ionization stage, density, and temperature [1]. Analysis of the emission spectra of highly stripped ions from laser-produced plasmas is potentially the most direct and reliable method for de- ducing the ultra-high-pressure plasma conditions. The development of the diagnostic methods for electron den- sity will produce important effect on the stud… 相似文献
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高能电子单粒子效应模拟实验研究 总被引:1,自引:0,他引:1
本文基于2 MeV自屏蔽电子加速器和10 MeV电子直线加速器,开展了电子单粒子效应实验研究,并分析了其机理。在保持入射电子能量不变的情况下,在±20%范围内改变器件的工作电压进行了单粒子翻转实验。实验结果表明:45 nm SRAM(额定工作电压1.5 V)芯片在电子直线加速器产生的高能电子照射下能产生明显的单粒子翻转,单粒子翻转截面随入射电子能量的变化趋势与文献数据相符合;电子引起的单粒子翻转截面随器件工作电压的变化趋势与理论预期一致,即工作电压越小,单粒子翻转临界电荷越小,翻转截面也越高。 相似文献
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《Journal of Nuclear Science and Technology》2013,50(3):270-273
Static corrosion tests were performed for the glass phase of a simulated waste form of non-combustible radioactive low-level waste to study a basic aqueous corrosion behavior. The waste form, which was fabricated from simulated waste sample by use of in-can type induction-heated melting, consists of two separated phases; a glass phase and a metal phase. Tests were performed for the glass phase from two types of the waste form with different chemical composition at 35°C and S/V ratio of 2,600 m?1. The glass phase with both types showed an incongruent dissolution similar to conventional high-level radioactive waste (HLW) glasses, i.e., the normalized elemental mass loss (NLi) for soluble elements such as B and Na continued to increase after the saturation of insoluble elements such as Si, A1 and Ca. The NLi for B increased in proportion to the square root of time except for early stage, which suggests that the rate of the long-term dissolution or alteration may be controlled by a diffusion process. Potential secondary phases forming as the results of incongruent dissolution were estimated to be kaolinite and calcite by comparison of the measured solution data with the thermodynamically calculated phase stability relationships. These results suggest that the glass phase has a potential chemical durability not so different from conventional HLW glasses. 相似文献
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实验研究了静态随机存储器(SRAM)的电磁脉冲效应,重点研究存储器容量不同、不同脉冲宽度脉冲场激励以及存储器读写状态与否等情况下的效应规律,实验场强在2.5至40 kV/m之间。实验结果表明,存储器处于读写状态即片选有效时其效应更为严重,存储器的翻转效应与存储容量大小、激励电磁脉冲的脉冲宽度关系不大,电磁脉冲的场强幅值是其主要的敏感参数。 相似文献