2025/06/10 by V. Kakoyan, Kakoyan, V., S. Zhamkochyan +45 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Electron and X-Ray Spectroscopy Techniques #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Laser-Matter Interactions and Applications #Photocathodes and Microchannel Plates
paper · pdf · doi:10.48550/arxiv.2506.08909
openalex publication_date 2025/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper describes a new photoelectron emission lifetime detection system. It is based on a recently developed Radio Frequency Timing technique of keV electrons and a 40 MHz, ultrafast pulsed laser. The photoelectron emission lifetimes from gold, monolayer MoS2 and monolayer graphene were measured. As expected, we do not observe delayed electrons from gold, and the time distribution of the produced photoelectrons represents the time resolution of the device, which is ∼12~ps. From the graphene, we observed delayed photoelectrons with a lifetime of ∼189~ps.