Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique

Ecole Polytechnique

Jean-Philippe Renault

Thomas Oksenhendler

Marie Geleoc

Catherine Corbel

Irina Shchedrina

A pulsed generator of electrically charged particles includes a vacuum chamber; wherein the vacuum chamber is configured to maintain an internal operating pressure between 10-6 mbar and atmospheric pressure; the vacuum chamber is configured to accommodate a photocathode and an anode, the photocathode and the anode being separated by an adjustable distance less than or equal to 30 mm; the vacuum chamber includes a window enabling pulsed light to reach firstly a rear face of the photocathode; the anode is arranged downstream of the photocathode and has an orifice suitable for the passage of electrically charged particles; the generator of electrically charged particles includes a system to apply a difference in potential between the photocathode and the anode, the voltage being configured to accelerate the charged particles.

Pulsed generator of electrically charged particles and method for using a pulsed generator of electrically charged particles

A process for the nitrogen doping of a material includes a set of carbon atoms in the sphybridization state. The process further includes the material not being oxidized beforehand, then placing the material in contact with dinitrogen. Irradiating the material and the dinitrogen placed in contact with a beam of electrons or of light ions whose energy is greater than or equal to 0.1 MeV, to obtain a material wherein some of the carbon atoms in the sphybridization state is nitrogen-doped.

Method for nitrogen doping of solid materials

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Massy, France

Jean-Philippe Renault