The field emission properties of single-walled carbon nanotubes deposited by chemical vapour deposition on plane substrates and on wires have been investigated . The good emitting performances of the nanotubes are promising for the assembling of robust and efficient cold cathodes , and in particular for the using as electron source for X-ray production. Tiny electron sources have been fabricated by coating metal wires (W , 300 m diameter) with nanotubes. To assess the efficiency of such nanotube-based cathodes in generating X radiations , a prototype X-ray tube has been fabricated . Preliminary measurements of the X-ray emission obtained with such a device are presented.
Sessa, V., Ciorba, A., Fiori, A., Lucci, M., Orlanducci, S., TERRANOVA PERSICHELLI, M.l., et al. (2007). Carbon nanotube cold cathodes for miniature X-ray tubes. In SPIE-Channeling. SPIE [10.117/12.742071].
Carbon nanotube cold cathodes for miniature X-ray tubes
SESSA, VITO;LUCCI, MASSIMILIANO;ORLANDUCCI, SILVIA;TERRANOVA PERSICHELLI, MARIA LETIZIA;
2007-01-01
Abstract
The field emission properties of single-walled carbon nanotubes deposited by chemical vapour deposition on plane substrates and on wires have been investigated . The good emitting performances of the nanotubes are promising for the assembling of robust and efficient cold cathodes , and in particular for the using as electron source for X-ray production. Tiny electron sources have been fabricated by coating metal wires (W , 300 m diameter) with nanotubes. To assess the efficiency of such nanotube-based cathodes in generating X radiations , a prototype X-ray tube has been fabricated . Preliminary measurements of the X-ray emission obtained with such a device are presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
