Conveners
3.2 Intense Electron and Ion Beams
- John Harris (Air Force Research Laboratory)
Timothy J. Renk
Sandia National Laboratories Albuquerque, NM 87185 USA
Paul F. Ottinger
Syntek Technologies, Fairfax, VA 22030 USA
Russell Durrer
Sigma Science, Inc, Albuquerque, NM 87185 USA
The HERMES-III accelerator (18 MV, 700kA, 40 ns) uses Inductive Voltage Adder (IVA) architecture to drive a magnetically insulated transmission line (MITL) with a 34-ohm vacuum impedance. In normal...
Electron emission from a material through an interface to vacuum or another material is a fundamental process in cathode, diode, ionization, electric contact and many other areas. Depending on the energy used, it can be broadly characterized into 3 different processes known as thermionic emission TE (by thermal energy), field emission FE (by quantum tunneling) and photoemission PE (by...
Electron emission plays a vital role in device design for systems with pressures ranging from vacuum to atmospheric pressure. This presentation outlines the theoretical unification of field emission modeled by the Fowler-Nordheim (FN) equation and space-charge limited emission (SCLE) represented by the Child-Langmuir (CL) law at vacuum and the Mott-Gurney (MG) law with collisions [1]. We show...
Laser-induced electron emission is essential to the development of ultrafast electron microscopes, tabletop particle accelerators and x-ray sources, and novel quantum nanocircuits [1-3]. In particular, two-color laser induced photoemission from a metal nanotip [4] provides great flexibility for the coherent control of emitted electron distribution by using the interference effect. By solving...
Shocks induced by fast high-fluence electron beam deposition on Aluminum targets: hydrodynamic simulations initialized by electron beam measurements.
N. Szalek, B. Bicrel, B. Cassany, A. Galtié, J. Gardelle and D. Hébert.
CEA/CESTA, 15 avenue des Sablières, CS 60001, 33116, Le Barp, France
We present recent results of fast hydrodynamic response of aluminum at CESTA. We are using the...
The Merlin IVA has recently completed its commissioning phase at the Technology Development Centre at AWE Aldermaston, where it has demonstrated reliable and consistent Pulsed Power operation which has enabled the demonstration of x-ray performance significantly above requirements. As part of the commissioning the opportunity was taken to take time resolved imaging of the optical emission from...
The possible ways of improving the performance of a novel multipacting cathode is numerically investigated by using Particle-In-Cell (PIC) method. Firstly, the prototype configuration and physical model of the novel multipacting cathode are briefly introduced. Secondly, by using the self-programmed 2.5D PIC code, possible ways of improving the performance of the novel multipacting cathode are...
Both intense pulsed X-ray and repetitive pulsed X-rays play an important role in the investigation of various physical processes in hydrodynamic experiments.
In order to generate intense pulses X-ray, 1.2 MV pulsed power generator and rod-pinch diode are designed and constructed at Institute of Fluid Physics, CAEP. The generator is composed of a Marx generator, an upstream oil line, a pulse...
