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An Improved Model for Photoemission of Space Charge Dominated Picosecond Electron Bunches: Theory and Experiment
2021
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The emission of a short highly charged electron bunch in a radiofrequency photogun is discussed. The traditional space charge limited emission numerical model is extended by an introduction of positively charged ions arising in the cathode region and dynamically changing during the emission. Estimates on the time characteristics of the charge migrating process in the semiconductor region are given. The numerical results are compared with the results of other numerical models and with
doi:10.18429/jacow-ipac2021-wepab101
fatcat:clnbdqs75vgznbcdzjdas4b5f4