TY - JOUR
T1 - Experimental study of 50-kV/3.5-a hollow electron beam produced by ferroelectric cathode
AU - Orbach, Yafit
AU - Nissan, Tuviya
AU - Bauer, Yedidya
AU - Pilossof, Moritz
AU - Einat, Moshe
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2016/5
Y1 - 2016/5
N2 - An annular electron beam emitted from a flat ferroelectric cathode is demonstrated in this paper. The cathode with a pierced ring-shaped front electrode was operated in two different electron gun setups. In the first electron gun, the cathode was operated in low voltages and under different magnetic fields. The beam shape was photographed, and the beam radii were controlled by the magnetic field. In the second electron gun, with a high voltage of 50 kV, an annular beam was also obtained, with a current of ∼ 3.5 A. The configuration presented here may be the basis for an annular electron beam source for a gyrotron.
AB - An annular electron beam emitted from a flat ferroelectric cathode is demonstrated in this paper. The cathode with a pierced ring-shaped front electrode was operated in two different electron gun setups. In the first electron gun, the cathode was operated in low voltages and under different magnetic fields. The beam shape was photographed, and the beam radii were controlled by the magnetic field. In the second electron gun, with a high voltage of 50 kV, an annular beam was also obtained, with a current of ∼ 3.5 A. The configuration presented here may be the basis for an annular electron beam source for a gyrotron.
KW - Annular beam
KW - ferroelectric (FE) cathode
KW - ferroelectric electron gun
KW - gyrotron.
UR - http://www.scopus.com/inward/record.url?scp=84979492678&partnerID=8YFLogxK
U2 - 10.1109/TED.2016.2545641
DO - 10.1109/TED.2016.2545641
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AN - SCOPUS:84979492678
SN - 0018-9383
VL - 63
SP - 2156
EP - 2162
JO - IEEE Transactions on Electron Devices
JF - IEEE Transactions on Electron Devices
IS - 5
M1 - 7447783
ER -