Mg based photocathodes for high brightness RF photoinjectors

Advanced high brightness radio frequency (RF) gun injectors require photocathodes with a fast response, high quantum efficiency (QE) and good surface uniformity. Metal films deposited by various techniques on the gun back wall could satisfy these requirements. A new deposition technique has been rec...

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Veröffentlicht in:	Applied surface science 2007-05, Vol.253 (15), p.6531-6534
Hauptverfasser:	Cultrera, L., Gatti, G., Tazzioli, F., Perrone, A., Miglietta, P., Ristoscu, C., Orlanducci, S., Fiori, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Electronics Exact sciences and technology Imaging devices Laser deposition Magnesium Materials science Methods of deposition of films and coatings film growth and epitaxy Photocathode Photomultipliers phototubes and photocathodes Physics Pulsed laser deposition Quantum efficiency Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Beschreibung
Zusammenfassung:	Advanced high brightness radio frequency (RF) gun injectors require photocathodes with a fast response, high quantum efficiency (QE) and good surface uniformity. Metal films deposited by various techniques on the gun back wall could satisfy these requirements. A new deposition technique has been recently proposed, i.e. pulsed laser ablation. Several Mg samples have been deposited by this technique: the emission performance and morphological changes induced on the cathode surface during laser activation are compared and discussed.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2007.01.102