Mean transverse energy of ultrananocrystalline diamond photocathode

  title={Mean transverse energy of ultrananocrystalline diamond photocathode},
  author={Gongxiaohui Chen and Gowri Adhikari and Linda Spentzouris and Kiran Kumar Kovi and Sergey Antipov and C. Jing and W. Andreas Schroeder and Sergey V. Baryshev},
  journal={Applied Physics Letters},
Nitrogen incorporated ultrananocrystalline diamond [(N)UNCD] could be an enabling material platform for injector photocathode applications due to its high emissivity. While the quantum efficiency (QE) of UNCD was reported by many groups, no experimental measurements of the intrinsic emittance/mean transverse energy (MTE) have been reported. Here, MTE measurement results for an (N)UNCD photocathode in the photon energy range from 4.41 to 5.26 eV are described. The MTE demonstrates no noticeable… 

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