Vacuum space charge effect in laser-based solid-state photoemission spectroscopy

Details Vacuum space charge effect in laser-based solid-state photoemission spectroscopy Vacuum space charge effect in laser-based solid-state photoemission spectroscopy

2010-01-12

arxiv.org/abs/1001.1989v1

J. Appl. Phys. 107, 014912 (2010)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.3273487

We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broadening and the shift of a gold Fermi edge as a function of spot size, laser power, and emission angle are characterized for pulse lengths of 6 ps and 6 eV photon energy. The results are used as a benchmark for an $N$-body numerical simulation and are compared to different regimes used in photoemission spectroscopy. These results provide an important reference for the design of time- and angle-resolved photoemission spectroscopy setups and next-generation light sources.

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