Výsledky vyhledávání - "Duncan, C. J. A."

Report

Four-Dimensional Emittance Measurements of Ultrafast Electron Diffraction Optics Corrected Up to Sextupole Order

Autor: Gordon, M., Li, W. H., Andorf, M. B., Bartnik, A. C., Duncan, C. J. R., Kaemingk, M., Pennington, C. A., Bazarov, I. V., Kim, Y. -K., Maxson, J. M.

Ultrafast electron diffraction (UED) is a technique in which short-pulse electron beams can probe the femtosecond-scale evolution of atomic structure in matter driven far from equilibrium. As an accelerator physics challenge, UED imposes stringent co

Externí odkaz: http://arxiv.org/abs/2207.13634

Zobrazit plný text záznamu

Report

Multi-scale time-resolved electron diffraction: A case study in moir\'e materials

Autor: Duncan, C. J. R., Kaemingk, M., Li, W. H., Andorf, M. B., Bartnik, A. C., Galdi, A., Gordon, M., Pennington, C. A., Bazarov, I. V., Zeng, H. J., Liu, F., Luo, D., Sood, A., Lindenberg, A. M., Tate, M. W., Muller, D. A., Thom-Levy, J., Gruner, S. M., Maxson, J. M.

Ultrafast-optical-pump -- structural-probe measurements, including ultrafast electron and x-ray scattering, provide direct experimental access to the fundamental timescales of atomic motion, and are thus foundational techniques for studying matter ou

Externí odkaz: http://arxiv.org/abs/2206.08404

Zobrazit plný text záznamu

Report

A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes

Autor: Li, W. H., Duncan, C. J. R., Andorf, M. B., Bartnik, A. C., Bianco, E., Cultrera, L., Galdi, A., Gordon, M., Kaemingk, M., Pennington, C. A., Kourkoutis, L. F., Bazarov, I. V., Maxson, J. M.

We report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micron probe size, long coherence length, and $200$ fs rms time resolution. We measure the 5d

Externí odkaz: http://arxiv.org/abs/2111.07922

Zobrazit plný text záznamu