Simulations of limiting currents for transport of intense relativistic electron beams in conducting wave guides

Summary form only given, as follows. The limiting current for all intense magnetized relativistic electron beam injected into a grounded metal pipe is investigated with 2-D particle-in-cell code MAGIC. Results are presented for a solid, uniform current density electron beam with injected currents below and above published theoretical limiting current estimates. Transmitted currents 15% above the well known Bogdankevich-Rukhadze limiting current value are observed, consistent with other particle-in-cell simulations [3,4]. A summary of published theoretical limiting current estimates is presented. In addition, the transition between vacuum and ion-focused-regime transport, with and without an applied axial magnetic field is examined.