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Title: Photoemission Studies of Metallic Photocathodes Prepared by Pulsed Laser Ablation Deposition Technique

Abstract

We present the results of our investigation on metallic films as suitable photocathodes for the production of intense electron beams in RF photoinjector guns. Pulsed laser ablation deposition technique was used for growing Mg and Y thin films onto Si and Cu substrates in high vacuum and at room temperature.Different diagnostic methods were used to characterize the thin films deposited on Si with the aim to optimize the deposition process. Photoelectron performances were investigated on samples deposited on Cu substrate in an ultra high vacuum photodiode chamber at 10{sup -7} Pa. Relatively high quantum efficiencies have been obtained for the deposited films, comparable to those of corresponding bulks. Samples could stay for several months in humid open air before being tested in a photodiode cell. The deposition process and the role of the photocathode surface contamination and its influence on the photoelectron performances are presented and discussed.

Authors:
; ;  [1];  [2];  [3]
  1. National Institute of Nuclear Physics and Physics Department, University of Salento, Via Arnesano, 73100-Lecce (Italy)
  2. Laboratorio de Metalografia, Dpto. Ingenieria Mecanica y Naval, Facultad de Ingenieria, Universidad de Buenos Aires (Argentina)
  3. National Institute of Nuclear Physics, National Laboratories, Frascati (Italy)
Publication Date:
OSTI Identifier:
21428716
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1288; Journal Issue: 1; Conference: International Commission for Optics topical meeting on emerging trends and novel materials in photonics, Delphi (Greece), 7-9 Oct 2010; Other Information: DOI: 10.1063/1.3521345; (c) 2010 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABLATION; COPPER; ENERGY BEAM DEPOSITION; LASER RADIATION; MAGNESIUM; PERFORMANCE; PHOTOCATHODES; PHOTOEMISSION; PULSED IRRADIATION; QUANTUM EFFICIENCY; SILICON; SUBSTRATES; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; YTTRIUM; ALKALINE EARTH METALS; CATHODES; DEPOSITION; EFFICIENCY; ELECTRODES; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; FILMS; IRRADIATION; METALS; RADIATIONS; SECONDARY EMISSION; SEMIMETALS; SURFACE COATING; TEMPERATURE RANGE; TRANSITION ELEMENTS

Citation Formats

Fasano, V, Lorusso, A, Perrone, A, De Rosa, H, and Cultrera, L. Photoemission Studies of Metallic Photocathodes Prepared by Pulsed Laser Ablation Deposition Technique. United States: N. p., 2010. Web. doi:10.1063/1.3521345.
Fasano, V, Lorusso, A, Perrone, A, De Rosa, H, & Cultrera, L. Photoemission Studies of Metallic Photocathodes Prepared by Pulsed Laser Ablation Deposition Technique. United States. https://doi.org/10.1063/1.3521345
Fasano, V, Lorusso, A, Perrone, A, De Rosa, H, and Cultrera, L. 2010. "Photoemission Studies of Metallic Photocathodes Prepared by Pulsed Laser Ablation Deposition Technique". United States. https://doi.org/10.1063/1.3521345.
@article{osti_21428716,
title = {Photoemission Studies of Metallic Photocathodes Prepared by Pulsed Laser Ablation Deposition Technique},
author = {Fasano, V and Lorusso, A and Perrone, A and De Rosa, H and Cultrera, L},
abstractNote = {We present the results of our investigation on metallic films as suitable photocathodes for the production of intense electron beams in RF photoinjector guns. Pulsed laser ablation deposition technique was used for growing Mg and Y thin films onto Si and Cu substrates in high vacuum and at room temperature.Different diagnostic methods were used to characterize the thin films deposited on Si with the aim to optimize the deposition process. Photoelectron performances were investigated on samples deposited on Cu substrate in an ultra high vacuum photodiode chamber at 10{sup -7} Pa. Relatively high quantum efficiencies have been obtained for the deposited films, comparable to those of corresponding bulks. Samples could stay for several months in humid open air before being tested in a photodiode cell. The deposition process and the role of the photocathode surface contamination and its influence on the photoelectron performances are presented and discussed.},
doi = {10.1063/1.3521345},
url = {https://www.osti.gov/biblio/21428716}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1288,
place = {United States},
year = {Wed Nov 10 00:00:00 EST 2010},
month = {Wed Nov 10 00:00:00 EST 2010}
}