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Title: Physics of intense, high energy radiation effects.

Abstract

This document summarizes the work done in our three-year LDRD project titled 'Physics of Intense, High Energy Radiation Effects.' This LDRD is focused on electrical effects of ionizing radiation at high dose-rates. One major thrust throughout the project has been the radiation-induced conductivity (RIC) produced by the ionizing radiation. Another important consideration has been the electrical effect of dose-enhanced radiation. This transient effect can produce an electromagnetic pulse (EMP). The unifying theme of the project has been the dielectric function. This quantity contains much of the physics covered in this project. For example, the work on transient electrical effects in radiation-induced conductivity (RIC) has been a key focus for the work on the EMP effects. This physics in contained in the dielectric function, which can also be expressed as a conductivity. The transient defects created during a radiation event are also contained, in principle. The energy loss lead the hot electrons and holes is given by the stopping power of ionizing radiation. This information is given by the inverse dielectric function. Finally, the short time atomistic phenomena caused by ionizing radiation can also be considered to be contained within the dielectric function. During the LDRD, meetings about the work weremore » held every week. These discussions involved theorists, experimentalists and engineers. These discussions branched out into the work done in other projects. For example, the work on EMP effects had influence on another project focused on such phenomena in gases. Furthermore, the physics of radiation detectors and radiation dosimeters was often discussed, and these discussions had impact on related projects. Some LDRD-related documents are now stored on a sharepoint site (https://sharepoint.sandia.gov/sites/LDRD-REMS/default.aspx). In the remainder of this document the work is described in catergories but there is much overlap between the atomistic calculations, the continuum calculations and the experiments.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
1008110
Report Number(s):
SAND2010-6955
TRN: US1101803
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; DEFECTS; DIELECTRIC MATERIALS; DOSE RATES; DOSEMETERS; ELECTROMAGNETIC PULSES; ELECTRONS; ENGINEERS; GASES; IONIZING RADIATIONS; PHYSICS; RADIATION DETECTORS; RADIATION EFFECTS; RADIATIONS; STOPPING POWER; TRANSIENTS

Citation Formats

Hjalmarson, Harold Paul, Hartman, E. Frederick, Magyar, Rudolph J., and Crozier, Paul Stewart. Physics of intense, high energy radiation effects.. United States: N. p., 2011. Web. doi:10.2172/1008110.
Hjalmarson, Harold Paul, Hartman, E. Frederick, Magyar, Rudolph J., & Crozier, Paul Stewart. Physics of intense, high energy radiation effects.. United States. doi:10.2172/1008110.
Hjalmarson, Harold Paul, Hartman, E. Frederick, Magyar, Rudolph J., and Crozier, Paul Stewart. Tue . "Physics of intense, high energy radiation effects.". United States. doi:10.2172/1008110. https://www.osti.gov/servlets/purl/1008110.
@article{osti_1008110,
title = {Physics of intense, high energy radiation effects.},
author = {Hjalmarson, Harold Paul and Hartman, E. Frederick and Magyar, Rudolph J. and Crozier, Paul Stewart},
abstractNote = {This document summarizes the work done in our three-year LDRD project titled 'Physics of Intense, High Energy Radiation Effects.' This LDRD is focused on electrical effects of ionizing radiation at high dose-rates. One major thrust throughout the project has been the radiation-induced conductivity (RIC) produced by the ionizing radiation. Another important consideration has been the electrical effect of dose-enhanced radiation. This transient effect can produce an electromagnetic pulse (EMP). The unifying theme of the project has been the dielectric function. This quantity contains much of the physics covered in this project. For example, the work on transient electrical effects in radiation-induced conductivity (RIC) has been a key focus for the work on the EMP effects. This physics in contained in the dielectric function, which can also be expressed as a conductivity. The transient defects created during a radiation event are also contained, in principle. The energy loss lead the hot electrons and holes is given by the stopping power of ionizing radiation. This information is given by the inverse dielectric function. Finally, the short time atomistic phenomena caused by ionizing radiation can also be considered to be contained within the dielectric function. During the LDRD, meetings about the work were held every week. These discussions involved theorists, experimentalists and engineers. These discussions branched out into the work done in other projects. For example, the work on EMP effects had influence on another project focused on such phenomena in gases. Furthermore, the physics of radiation detectors and radiation dosimeters was often discussed, and these discussions had impact on related projects. Some LDRD-related documents are now stored on a sharepoint site (https://sharepoint.sandia.gov/sites/LDRD-REMS/default.aspx). In the remainder of this document the work is described in catergories but there is much overlap between the atomistic calculations, the continuum calculations and the experiments.},
doi = {10.2172/1008110},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {2}
}

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