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较详尽地描述了能对激光与靶物质相互作用所产生的超热电子进行直接测量的电子磁谱仪的建造及其相应的参量,并利用这台磁谱仪测量了超短脉冲强激光与靶物质相互作用后出射的超热电子的能谱,在5×1015W/cm2的激光强度下,超热电子的最大能量大于500keV,能谱结构呈双温Maxwell分布,能谱的峰值出现在50keV附近,超热电子的数量在相同的能量范围内远大于γ射线的数量
Described in more detail can be laser and target material produced by the interaction of hyperthermia electron direct measurement of the construction of electronic magnetic spectrometer and its corresponding parameters and the use of this magnetic spectrometer to measure the ultrashort pulse laser and Under the laser intensity of 5 × 10 15 W / cm 2, the maximum energy of superheated electrons is more than 500 keV. The energy spectrum shows a two-temperature Maxwell distribution, and the peak of energy spectrum appears at 50 keV In the vicinity, the number of hot electrons is much greater than the number of gamma rays in the same energy range