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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(07) [July 2012] >
| Title: | Design, development and characterization of tetrode type electron gun system for generation of low energy electrons |
| Authors: | Deore, Avinash V
Patil, B J
V N, Bhoraskar
Dhole, S D |
| Keywords: | Tetrode electron gun
Low energy electrons
Beams current
Irradiation chamber |
| Issue Date: | Jul-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A tetrode type
electron gun system for the generation of low energy electrons has been
designed, developed and characterized. The electron gun, designed for
irradiation experiments, has four electrodes namely, cathode, focusing
electrode, control electrode and anode. This electron gun is capable to provide
electrons of energy over the range of 1 keV to 20 keV, with current maximum 100
μA. The electron gun and a Faraday cup are mounted in the evacuated cylindrical
chamber. The samples are fixed on the Faraday cup mounted at a distance of 200
mm from the anode in the chamber and irradiated with low energy electrons at a
pressure around 10-6 mbar. In this electron gun system, at any electron energy over the
entire range, the electron beam diameter can be varied from 5 to 120 mm on the
Faraday cup. Also, the circular shape of the beam spot was maintained, even
though the beam current and beam diameter are varied. The uniformity of the
electron beam over the entire beam area was measured with a multi-electrode
assembly and found to be 15%. This system is being used for the synthesis and
diffusion of metal and semiconductor nanoparticles in polymeric and glass
materials. |
| Page(s): | 482-485 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(07) [July 2012]
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