Abstract
Experimental results obtained with a set-up designed to study the physical properties of uranium surrogate vapor are presented. Cerium is evaporated to obtain systematic data in order to better understand the underlying physical properties. By a time of flight technique, the velocity was measured on the axial streamline of Ce present in the vapor produced by an electron gun. A description of the experimental set-up is given. A brief review of the T.O.F. spectrum modelization is then developed, which allows to deduce hydrodynamic velocity and axial temperature. Within a macroscopic collisional flow model, considering kinetic layer and hydrodynamic layer, a source temperature is deduced. A significant part of the internal electronic energy relaxes into translational kinetic energy. A microscopic atomic collisional mechanism, the non resonant internal energy transfer, is used to interpret this energy relaxation. The necessary probability that such collisional process occurs is estimated in order to reproduce T.O.F. spectra.
Citation Formats
Blumenfeld, L, Gonella, C, and Fleche, J L.
Statistical interpretation of electronic energy relaxation in Ce vapor.
France: N. p.,
1992.
Web.
Blumenfeld, L, Gonella, C, & Fleche, J L.
Statistical interpretation of electronic energy relaxation in Ce vapor.
France.
Blumenfeld, L, Gonella, C, and Fleche, J L.
1992.
"Statistical interpretation of electronic energy relaxation in Ce vapor."
France.
@misc{etde_10152137,
title = {Statistical interpretation of electronic energy relaxation in Ce vapor}
author = {Blumenfeld, L, Gonella, C, and Fleche, J L}
abstractNote = {Experimental results obtained with a set-up designed to study the physical properties of uranium surrogate vapor are presented. Cerium is evaporated to obtain systematic data in order to better understand the underlying physical properties. By a time of flight technique, the velocity was measured on the axial streamline of Ce present in the vapor produced by an electron gun. A description of the experimental set-up is given. A brief review of the T.O.F. spectrum modelization is then developed, which allows to deduce hydrodynamic velocity and axial temperature. Within a macroscopic collisional flow model, considering kinetic layer and hydrodynamic layer, a source temperature is deduced. A significant part of the internal electronic energy relaxes into translational kinetic energy. A microscopic atomic collisional mechanism, the non resonant internal energy transfer, is used to interpret this energy relaxation. The necessary probability that such collisional process occurs is estimated in order to reproduce T.O.F. spectra.}
place = {France}
year = {1992}
month = {Dec}
}
title = {Statistical interpretation of electronic energy relaxation in Ce vapor}
author = {Blumenfeld, L, Gonella, C, and Fleche, J L}
abstractNote = {Experimental results obtained with a set-up designed to study the physical properties of uranium surrogate vapor are presented. Cerium is evaporated to obtain systematic data in order to better understand the underlying physical properties. By a time of flight technique, the velocity was measured on the axial streamline of Ce present in the vapor produced by an electron gun. A description of the experimental set-up is given. A brief review of the T.O.F. spectrum modelization is then developed, which allows to deduce hydrodynamic velocity and axial temperature. Within a macroscopic collisional flow model, considering kinetic layer and hydrodynamic layer, a source temperature is deduced. A significant part of the internal electronic energy relaxes into translational kinetic energy. A microscopic atomic collisional mechanism, the non resonant internal energy transfer, is used to interpret this energy relaxation. The necessary probability that such collisional process occurs is estimated in order to reproduce T.O.F. spectra.}
place = {France}
year = {1992}
month = {Dec}
}