Figure 6
The photoelectron energy spectrum measurements using different noble gases via the e-TOF apparatus. The inset schematic diagram shows the coordinates for the X-ray beam path, gas injection nozzle and e-TOF device in the experimental setup. (a) The cumulative photoelectron time-of-flight spectra for 1000 shots in neon gas at different pressures. (b), (c) and (d) are the corresponding cumulative photoelectron kinetic energy spectra for 1000 shots in neon, argon and krypton at different pressures. |