New carbon-cone tip-equipped cold-field emission gun

Friday, January 13, 2012



A new cathode for cold-field emission gun using a pyrolytic carbon-cone supported onto a carbon nanotube as the electron emitting tip has been developed in CEMES. The measured brightness of the carbon nanotube-based tip is 5 times better than obtained with a standard tungsten tip; Significant improvements of FEG-TEM performances can be obtained by using a new carbon cone tip




 

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04/10/2018 Cold-atom superradiance

John Martin (Université de Liège, Belgium) 10 avril 2018, 14h00   In my talk, I...