4-8 August 2015
America/Detroit timezone

Surface-Engineered Photocathode for Tunable Photoemissive Properties

5 Aug 2015, 14:00
18m
Koessler (Michigan League)

Koessler

Michigan League

Speakers

Daniel Velazquez (Illinois Institute of Technology) Daniel Velazquez

Description

Photocathode emission properties are critical for electron beam applications such as photoinjectors for free electron lasers (FEL) and energy recovery Linacs (ERL). We investigate whether emission properties of photocathodes can be manipulated through the engineering of the surface electronic structure. The multilayers described here have been predicted to have emission properties in correlation with the film thickness. This paper describes how ultra-thin multilayered MgO/Ag/MgO films in the crystallographic orientations (001) and (111) multilayers were synthesized and characterized. We present results of work function, quantum efficiency and angular emission in correlation with film thickness.
Oral or Poster Presentation Oral

Primary author

Daniel Velazquez (Illinois Institute of Technology)

Co-authors

Dr Jeff Terry (Illinois Institute of Technology) Dr Linda Spentzouris (Illinois Institute of Technology) Ms Rachel Seibert (Illinois Institute of Technology) Dr Zikri Yusof (Illinois Institute of Technology)

Presentation Materials