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Condensed Matter Student Seminar Series

Thursday, July 18, 2024 at 12:00pm to 1:00pm

Clark Hall, 701
Central Campus

Title: Enhancing accelerator photocathode performance: an epitaxial growth and diffraction analysis approach

Abstract: Alkali antimonides are a class of photoemitting materials that enhance applications ranging from particle accelerators to photodetectors. For electron accelerators, the most important properties of the photocathode are its influence on the initial momentum spread of the emitted electron beam and the quantum efficiency (the number of electrons emitted per incident photon). Recent experiments have demonstrated the growth of single-crystal cesium antimonide via molecular beam epitaxy and highlighted the performance benefits of high quantum efficiency and potentially low intrinsic momentum spread from epitaxial photocathodes. In my talk, I will present studies investigating various material and morphological properties—such as crystallinity, surface roughness, and stoichiometry—that influence the performance of alkali antimonides as electron sources for accelerators.  

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Event Type

Seminar

Departments

Applied and Engineering Physics, Physics

University Themes

Research

Tags

engineering, lassp_and_aep_seminar, lassp, applied and engineering physics

Cost

Free

Contact E-Mail

ab2398@cornell.edu

Contact Name

Asad Bhuiyan

Speaker

Chad Pennington

Speaker Affiliation

Maxson Group

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