Experimental Validation of a Photoemission Model for End-to-End Beam Simulations and Custom Photocathode Designs

Abstract

This paper outlines the experimental techniques used to validate a photoemission model applied to metals with sub-monolayer alkali coatings. Essential features of the model are highlighted and its results are compared to experiment. Cesium was deposited in-situ on tungsten and silver polyctystalline substrates while quantum efficiency (QE) was measured as a function of surface coverage and other parameters. Good qualitative agreement with theory is demonstrated and significant differences in quantitative comparisons are addressed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2006
Accession Number
ADP022627

Entities

People

  • D. W. Feldman
  • K. L. Jensen
  • N. A. Moody
  • P. G. O'shea

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Agreements
  • Cathodes
  • Efficiency
  • Electron Scattering
  • Electronics
  • Electrons
  • Emission
  • Energy
  • Laser Pulses
  • Lasers
  • Materials
  • Metals
  • Photocathodes
  • Photoelectric Emission
  • Quantum Efficiency
  • Vacuum Electronics
  • Work Functions

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Thin Film Deposition Science.

Technology Areas

  • Quantum Computing