J. W. Schumer
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Development of a fast rise time air-insulated linear transformer driver for use in high energy density physics Open
The University of New Mexico, in collaboration with the Naval Research Laboratory, has developed and characterized a fast rise time air-insulated linear transformer driver (LTD) for use in high power microwave (HPM), high energy density ph…
View article: Demonstration of System Technologies Enabling Millimeter Wave Power Beaming Using Thermomechanical Power Conversion
Demonstration of System Technologies Enabling Millimeter Wave Power Beaming Using Thermomechanical Power Conversion Open
Key technologies and system components for a power beaming concept, based on a high-power mm-wave transmitter and thermomechanical conversion of the beamed energy to electrical power at the receiving station, are described. Outdoor testing…
View article: Spectroscopic investigation of electron-beam-induced excitation and ionization of air [Abstract]
Spectroscopic investigation of electron-beam-induced excitation and ionization of air [Abstract] Open
Time-dependent visible and near-ultraviolet emission spectroscopy was used to track the presence of excited and ionized states induced as an electron beam transited a cavity filled with air at low pressures. An electron beam was produced i…
Method for improved voltage determination for pulsed power systems utilizing a magnetically insulated transmission line Open
Because the voltage is difficult to measure in a magnetically insulated transmission line (MITL), the measurement of the currents flowing in the cathode and anode is often used with MITL theory to estimate the voltage in a given experiment…
A Primer on Pulsed Power and Linear Transformer Drivers for High Energy Density Physics Applications Open
The objectives of this tutorial are as follows: 1) to help students and researchers develop a basic understanding of how pulsed-power systems are used to create high-energy-density (HED) matter; 2) to develop a basic understanding of a new…
Short-pulse photoneutron production on beryllium using the mercury pulsed power X-ray source Open
An x-ray beam can produce neutrons using beryllium as a photoneutron converter because of the relatively low 9Be(ɤ,n) reaction energy threshold. Previous photoneutron production simulations have focused on using a linear accelerator and he…
Particle-in-Cell Simulations of Electromagnetic Power-Flow in a Complex 3D Geometry. Open
The goal is to assist experimental designs which are being developed to create an azimuthally uniform terawatt electron beam with comparable current densities in each of the 3 ring diodes.