Accession Number:

ADA523176

Title:

Vacuum Space Charge Effect in Laser-Based Solid-State Photoemission Spectroscopy

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB

Report Date:

2010-06-03

Pagination or Media Count:

18.0

Abstract:

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.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE