Journal article

Publication year: 2009

Pages: 17010-

Journal: European Physical Society Letters

Volume number: 85

Issue number: 1

Open access status: Green

DOI Link: https://doi.org/10.1209/0295-5075/85/17010

Publisher: IOP Publishing

Abstract: 

The transient electric field governing the dynamics of space charge is investigated by time- and energy-resolved low-energy electron scattering. The space charge above a copper target is produced by high-intensity femtosecond laser pulses. The pump-probe experiment has a measured temporal resolution of better than 35 ps at 55 eV probe electron energy. The probe electron acceleration due to space charge is reproduced within a 3-dimensional non-relativistic model, which determines an effective number of electrons in the space charge cloud and its initial diameter. Comparison of the simulations with the experiments indicates a Coulomb explosion, which is consistent with transients in the order of 1 ns, the terminal kinetic energy of the cloud and the thermoemission currents predicted by the Richardson-Dushman formula.

Harvard Citation style: Cirelli, C., Hengsberger, M., Dolocan, A., Over, H., Osterwalder, J. and Greber, T. (2009) Direct observation of space charge dynamics by picosecond low-energy electron scattering, European Physical Society Letters, 85(1), p. 17010. https://doi.org/10.1209/0295-5075/85/17010

APA Citation style: Cirelli, C., Hengsberger, M., Dolocan, A., Over, H., Osterwalder, J., & Greber, T. (2009). Direct observation of space charge dynamics by picosecond low-energy electron scattering. European Physical Society Letters. 85(1), 17010. https://doi.org/10.1209/0295-5075/85/17010