强场自电离光电子谱中峰开关效应的破坏

DESTRUCTION OF PEAK SWITCHING IN STRONG-FIELD AUTOIONIZATION PHOTOELECTRON SPECTRA

研究了激光场的空间非均匀性、探测器接收角(或孔径光阑)的大小对强场自电离光电子谱的影响,结果表明,上述因素对光电子谱有显著影响,当探测器接收角(或孔径光阑)较小时,光电子谱出现峰开关效应;而当接收角(或孔径光阑)较大时,峰开关效应则被完全破坏。

In this paper, the effect of the spatial inhomogeneity of the laser field and the size of detector acceptance angle or aperture on strong-field autoionization photoelectron spectra is investigated. It is shown that the photoelectron spectra are drastically affected by the above factors , for small detector acceptance angle or aperture size, peak switching appears in the photoelectron spectra, but for large detector acceptance angle or aperture size, peak switching is destroyed completely.