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Photofield emission from a tipped silicon photocathode in IR with a new picosecond Nd-YAG laser at a frequency of 100 MHz

Abstract : Tipped silicon photocathodes are tested with the IR wavelength (1.064micronmeter) Full-size image (<1 K) of a new lock-mode Nd–YAG laser. The impulse width of 30 ps is repeated at a frequency of 100 MHz at a power of 122 W. A quantum yield of 2.5×10−3 is obtained in a DC gun using the best continuous emission field of 20 MV/m for the photofield emission current. The ratio of the photofield emission current to the field emission current (dark current) is more than 104. A previous experiment with the second harmonic of a Nd–YAG at 10 Hz gave 700 pC per pulse of 35 ps width with a quantum yield of 10−5 at the threshold emission field of 7.5 MV/m.
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http://hal.in2p3.fr/in2p3-00008198
Contributor : Jeanine Pellet Connect in order to contact the contributor
Submitted on : Monday, February 5, 2001 - 10:28:12 AM
Last modification on : Tuesday, April 20, 2021 - 12:00:15 PM

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Alain Barthélémy, B. Bourliaguet, Vincent Couderc, M. Dupont, Claude Froehly, et al.. Photofield emission from a tipped silicon photocathode in IR with a new picosecond Nd-YAG laser at a frequency of 100 MHz. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2000, 455, pp.405-411. ⟨10.1016/S0168-9002(00)00519-2⟩. ⟨in2p3-00008198⟩

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