标题： 电离率与激光强度的关系，由中性气体暴露于800 nm超短脉冲激光时的离子计数与峰值强度的关系确定 显示英文标题

标题： Ionization rate vs. laser intensity determined from ion count vs. peak intensity due to neutral gas exposure to an 800 nm ultrashort pulsed laser

摘要： 氩气、O$_{2}$和 N$_{2}$在线偏振 $800$ 纳米光的局部瞬时激光强度 $I$ 下的平均电离率是通过数值反演已发表的飞行时间离子光谱仪数据确定的，最大达到约 $300$ 太瓦/平方厘米 $^{2}$。 通过将其与高$I_{0}$解进行拟合，重新校准了光谱仪末端微通道板（MCP）的发布 Ar$^{+}$收集效率及其$I_{0}$尺度。 其他物种的相对收集效率由发布的MCP阴极数据确定。 O$_2$的结果与用于确定其在多光子（低$I$）区域中的截面$\sigma_8$的发布数据的重新评估一致。 显示英文摘要

摘要： The optical cycle-averaged ionization rate of Ar, O$_{2}$, and N$_{2}$ vs. local instantaneous laser intensity $I$ for linear polarized $800$ nm light is determined up to approx. $300$ TW/cm$^{2}$ by numerically inverting published time-of-flight ion spectrometer data. The published Ar$^{+}$ collection efficiency of the microchannel plate (MCP) at the end of the spectrometer and its $I_{0}$ scale are recalibrated by fitting it to its high $I_{0}$ solution. The relative collection efficiencies of the other species are determined by published MCP cathode data. Results for O$_2$ are consistent with a reevaluation of published data used to determine its cross section $\sigma_8$ in the multiphoton (low $I$) regime.