Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Enhanced thermionic currents by non equilibrium electron population of metals
Year:2013
Research Areas
  • Phisics
Information
Abstract
An analytical expression is derived for the electron thermionic current from heated metals by using a non equilibrium, modified Kappa energy distribution for electrons. This isotropic distribution characterizes the long high energy tails in the electron energy spectrum for low values of the index ? and also accounts for the Fermi energy for the metal electrons. The limit for large ? recovers the classical equilibrium Fermi-Dirac distribution. The predicted electron thermionic current for low ? increases between four and five orders of magnitude with respect to the predictions of the equilibrium Richardson-Dushmann current. The observed departures from this classical expression, also recovered for large ?, would correspond to moderate values of this index. The strong increments predicted by the thermionic emission currents suggest that, under appropriate conditions, materials with non equilibrium electron populations would become more efficient electron emitters at low temperatures.
International
Si
JCR
Si
Title
European Physical Journal B
ISBN
1434-6028
Impact factor JCR
1,534
Impact info
Datos JCR del año 2011
Volume
86:382
10.1140/epjb/e2013-40646-5
Journal number
From page
1
To page
4
Month
SEPTIEMBRE
Ranking
Participants
  • Autor: Juan Luis Domenech Garret (UPM)
  • Autor: Sandra Pilar Tierno Gomez (UPM)
  • Autor: Luis Conde Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Investigación en Fusión Inercial y Física de Plasmas
  • Departamento: Física Aplicada a la Ingeniería Aeronáutica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)