A phenomenological model is developed to describe the process of energy disposal, ruled by electron-hole pair generation, in exoergic processes at metal surfaces. The evolution of the energy distribution function of the metal electrons has been studied in the case of exoergic adsorption of gas atoms. A simple expression is derived for the chemicurrent yield which applies to both adsorption and recombination phenomena. The model is employed for interpreting experimental data on hot carrier generation by H adsorption. A comparison between the results of the present theory and those previously obtained by means of other approaches is also reported and discussed.
Tomellini, M. (2008). Modelling the hot electron spectrum in exothermic reactions on metals. JOURNAL OF PHYSICS. CONDENSED MATTER, 20(13), 135002-135008 [10.1088/0953-8984/20/13/135002].
Modelling the hot electron spectrum in exothermic reactions on metals
TOMELLINI, MASSIMO
2008-01-01
Abstract
A phenomenological model is developed to describe the process of energy disposal, ruled by electron-hole pair generation, in exoergic processes at metal surfaces. The evolution of the energy distribution function of the metal electrons has been studied in the case of exoergic adsorption of gas atoms. A simple expression is derived for the chemicurrent yield which applies to both adsorption and recombination phenomena. The model is employed for interpreting experimental data on hot carrier generation by H adsorption. A comparison between the results of the present theory and those previously obtained by means of other approaches is also reported and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
