Development of a 2 ns duration high current electron beam source using CsI coated carbon fibre cathode

Author

Chandra, Ranveer ; Kumar, Ravindra ; Mitra, Subhasish ; Sharma, D.K. ; Patil, D.S. ; Sharma, Ashok ; Mittal, Kailash Chandra

Author_Institution

Accel. & Pulse Power Div., Bhabha Atomic Res. Centre, Mumbai, India

fYear

2014

fDate

Sept. 28 2014-Oct. 3 2014

Firstpage

581

Lastpage

583

Abstract

A 50 ampere beam current having a rise time lesser than 500 pico-seconds with its energy 50 keV is generated using field emission mechanism. Beam duration was 2 ns. CsI coating on carbon fibre cathode was done using plasma spray coating. The results obtained from this cathode were compared to the carbon fibre cathode and the reason behind higher current density in the case of CsI coating has been explained.

Keywords

caesium compounds; carbon fibres; cathodes; electron sources; field emission; plasma arc sprayed coatings; CsI coated carbon fibre cathode; ampere beam current; beam duration; current density; field emission mechanism; high current electron beam source; plasma spray coating; rise time; Carbon; Carbon dioxide; Cathodes; Coatings; Electron beams; Electron emission; Plasmas; CsI coated carbon fibre cathode; Nano-second duration electron beam; Sub-nanosecond rise time pulses;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014 International Symposium on

Conference_Location

Mumbai

Print_ISBN

978-1-4799-6750-6

Type

conf

DOI

10.1109/DEIV.2014.6961749

Filename

6961749