Western Michigan University Physics Department, Kalamazoo, Michigan 49008, USA.
Phys Rev Lett. 2010 Jun 25;104(25):253002. doi: 10.1103/PhysRevLett.104.253002. Epub 2010 Jun 23.
Sequential multiple photoionization of the prototypical molecule N2 is studied with femtosecond time resolution using the Linac Coherent Light Source (LCLS). A detailed picture of intense x-ray induced ionization and dissociation dynamics is revealed, including a molecular mechanism of frustrated absorption that suppresses the formation of high charge states at short pulse durations. The inverse scaling of the average target charge state with x-ray peak brightness has possible implications for single-pulse imaging applications.
使用 Linac Coherent Light Source（LCLS），采用飞秒时间分辨技术研究了典型分子 N2 的序贯多光子电离。揭示了高强度 X 射线诱导电离和离解动力学的详细图像，包括一种受挫吸收的分子机制，该机制在短脉冲持续时间内抑制了高电荷态的形成。平均靶电荷态与 X 射线峰值亮度的反比缩放可能对单脉冲成像应用有影响。
