论文标题
Bremsstrahlung的发射和血浆表征由中等相对论激光与血压相互作用驱动
Bremsstrahlung emission and plasma characterization driven by moderately relativistic laser-plasma interactions
论文作者
论文摘要
Petawatt-Class短激光脉冲与固体目标的相互作用产生的相对论电子可用于通过Bremsstrahlung产生明亮的X射线。激光能量转移到这些电子中的效率取决于多个参数，包括聚焦强度和前等离子体水平。本文报告了高强度Petawatt级玻璃激光脉冲与固体目标的相互作用，最大强度为$ 10^{19} $ w/cm $^2 $。镜面反射光的原位测量用于提供激光吸收的上限，并表征聚焦的激光强度，pher-las-prasma水平和第二次谐波光的发电机制。测得的电子和Bremsstrahung辐射的光谱提供了有关激光能量传递效率的信息。
Relativistic electrons generated by the interaction of petawatt-class short laser pulses with solid targets can be used to generate bright X-rays via bremsstrahlung. The efficiency of laser energy transfer into these electrons depends on multiple parameters including the focused intensity and pre-plasma level. This paper reports experimental results from the interaction of a high intensity petawatt-class glass laser pulses with solid targets at a maximum intensity of $10^{19}$ W/cm$^2$. In-situ measurements of specularly reflected light are used to provide an upper bound of laser absorption and to characterize focused laser intensity, the pre-plasma level and the generation mechanism of second harmonic light. The measured spectrum of electrons and bremsstrahlung radiation provide information about the efficiency of laser energy transfer.
