Title :
Photoemitters and pulsed ferroelectric electron emitters with high current density
Author :
Airapetov, A.Sh. ; Gevorgian, G.A. ; Ivanchik, I.I. ; Lebedev, A.N. ; Levshin, I.V. ; Tikhomirova, N.A. ; Feoktistov, A.L.
Author_Institution :
P.N.Lebedev Phys. Inst., Moscow, Russia
Abstract :
A quantum efficiency close to 1% has been demonstrated for stable and atmosphere tolerant photocathodes for a photoinjector producing short electron bunches with current 100-500 A. Experimental study of electron emission during ferroelectric polarization reversal by high voltage pulses has been performed. Emission current density reached 400 A/cm2, which was limited by space charge effects.
Keywords :
current density; photocathodes; photoemission; atmosphere tolerant photocathodes; high current density; photoemitters; photoinjector producing short electron bunches; pulsed ferroelectric electron emitters; quantum efficiency; Cathodes; Current density; Measurement by laser beam; Power lasers; Pump lasers; Voltage measurement;
Conference_Titel :
High-Power Particle Beams, 1990 8th International Conference on
Conference_Location :
Novosibirsk
Print_ISBN :
9.7898102055e+012
