A New Compensating Element for a Femtosecond Photoelectron Gun

Authors

Bao-Liang Qian, Old Dominion University
Hani E. Elsayed-Ali, Old Dominion UniversityFollow

Document Type

Article

Publication Date

2001

DOI

10.1063/1.1387254

Publication Title

Review of Scientific Instruments

Volume

72

Issue

9

Pages

3507-3513

Abstract

Design and analysis of a new compensating element for improving the electron pulse front and compressing the pulse duration in a femtosecond photoelectron gun are described. The compensating element is a small metallic cylindrical cavity in which an external voltage is applied in such a way that a special electric field forms and interacts with the electron pulse. This electric field reduces the distances between the faster and slower electrons inside the cavity and efficiently compensates for electron pulse broadening caused by the photoelectron energy spread and space charge effects. Poisson's equation and the equation of motion are solved to obtain the electron trajectories. Results highlight the important design parameters of the new compensating element and show its feasibility in compressing electron pulses in the femtosecond regime. © 2001 American Institute of Physics. [DOI: 10.1063/1.1387254]

Original Publication Citation

Qian, B. L., & Elsayed-Ali, H. E. (2001). A new compensating element for a femtosecond photoelectron gun. Review of Scientific Instruments, 72(9), 3507-3513. doi:10.1063/1.1387254

Repository Citation

Qian, Bao-Liang and Elsayed-Ali, Hani E., "A New Compensating Element for a Femtosecond Photoelectron Gun" (2001). Electrical & Computer Engineering Faculty Publications. 111.
https://digitalcommons.odu.edu/ece_fac_pubs/111