2 papers
physics.app-ph2021
Physics-based Model for Nonuniform Thermionic Electron Emission from Polycrystalline Cathodes
Dongzheng Chen, Ryan Jacobs, John Petillo +4
Experimental observations of thermionic electron emission demonstrate a smooth transition between TL and FSCL regions of the emitted-current-density-versus-temperature (J-T) (Miram…
physics.acc-ph2018
Adjoint Approach to Beam Optics Sensitivity Based on Hamiltonian Particle Dynamics
Thomas M. Antonsen, David Chernin, John Petillo
We develop a sensitivity function for the design of electron optics using an adjoint approach based on a form of reciprocity implicit in Hamilton's equations of motion. The sensiti…