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Title: Report by Geophysics Focus Lead


No abstract provided.

  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Country of Publication:
United States
58 GEOSCIENCES; Earth Sciences

Citation Formats

Coblentz, David. Report by Geophysics Focus Lead. United States: N. p., 2017. Web. doi:10.2172/1375846.
Coblentz, David. Report by Geophysics Focus Lead. United States. doi:10.2172/1375846.
Coblentz, David. Tue . "Report by Geophysics Focus Lead". United States. doi:10.2172/1375846.
title = {Report by Geophysics Focus Lead},
author = {Coblentz, David},
abstractNote = {No abstract provided.},
doi = {10.2172/1375846},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 15 00:00:00 EDT 2017},
month = {Tue Aug 15 00:00:00 EDT 2017}

Technical Report:

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  • Research on this grant has focused on plasma focus experiments in the areas of particle-beam generation and as a potential repetitive opening switch. In pursuing the former, unique diagnostic tools were developed to measure the scaling of particle-beam current and energy for both the electron and ion beams generated by the device. Simultaneous measurements of the energy spectra for both the electron and ion beams were measured for the first time as were scaling laws for the increase of electron energy and current with input energy. The potential of the plasma focus as an opening switch was then investigated. Measurementsmore » of the current and voltage waveforms indicated that the resistance of the pinch was roughly ten times the classical value estimated from electron-temperature measurements and streak pictures. To increase the efficiency the impaler concept was devised which could have a transfer efficiency of well over 50% according to the results of a physical model. The frequency of the microwave emission was measured using the delay line technique. The observed frequencies were most consistent with the lower hybrid frequency.« less
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  • A distributed data system that included shared data resident in a mainframe/PC local area network environment was successfully introduced to nontechnical end-users. The system provided the end-user with the control of responsiveness and reliability inherent in local application processing, along with the back-up support and archival storage/retrieval provided by a mainframe computer. A semaphore-driven locking scheme ensured referential data integrity across the shared data system, and HASP protocols provided fast and reliable file transfer capability. The project demonstrates that distributed methods can be applied to information systems to increase their efficiency and productivity. When the resources are on hand formore » such a system, planning and a phased approach to the appropriate implementation can bring success even in an end-user environment. 11 refs., 2 figs.« less