Modeling ultrashort laser-induced emission from a negatively biased metal

Autor:	W. Wendelen, Baerbel Rethfeld, B. Y. Mueller, David Autrique, Annemie Bogaerts
Rok vydání:	2013
Předmět:	Physics Physics and Astronomy (miscellaneous) Scattering Astrophysics::High Energy Astrophysical Phenomena Charge density Electron Boltzmann equation Space charge Cathode law.invention Chemistry Field electron emission Tunnel effect law Atomic physics
Zdroj:	Applied physics letters
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.4830378
Popis:	A theoretical study of ultrashort laser-induced electron emission from a negatively biased metallic cathode has been performed. Classical as well as tunneling electron emission mechanisms are considered. It was found that electron emission is governed by an interplay of processes inside as well as above the cathode. A hybrid model is proposed, where the electron distribution within the target is retrieved from Boltzmann scattering integrals, while the charge distribution above it is studied by a Particle-In-Cell simulation. The results indicate that non-equilibrium effects determine the initial emission process, whereas the space charge above the target suppresses the effectively emitted charge.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::580ccff01c4dd97b55b3055bbffbedcc https://doi.org/10.1063/1.4830378 Zobrazit plný text záznamu