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.
@article{arxiv.2506.08909,
title = {Picosecond resolution photoelectron emission lifetime detection system},
author = {V. Kakoyan and S. Zhamkochyan and S. Abrahamyan and A. Aprahamian and H. Elbakyan and A. Ghalumyan and A. Kakoyan and S. Mayilyan and A. Papyan and H. Rostomyan and A. Safaryan and G. Sughyan and N. Margaryan and J. Annand and K. Livingston and R. Montgomery and P. Achenbach and J. Pochodzalla and D. L. Balabanski and S. N. Nakamura and K. Manukyan and V. Sharyy and D. Yvon and A. Margaryan},
journal= {arXiv preprint arXiv:2506.08909},
year = {2025}
}
Comments
6 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:2203.09194