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Title: Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments

Abstract

Here, we present synthetic transmission spectra generated with PrismSPECT utilizing both the ATBASE model and the Los Alamos opacity library (OPLIB) to evaluate whether an alternative choice in atomic data will impact modeling of experimental data from radiation transport experiments using Sc-doped aerogel foams (ScSi 6O 12 at 75 mg/cm 3 density). We have determined that in the 50-200 eV T e range there is a significant difference in the 1s-3p spectra, especially below 100 eV, and for T e = 200 eV above 5000 eV in photon energy. Examining synthetic spectra generated using OPLIB with 300 resolving power reveals spectral sensitivity to T e changes of ~3 eV.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [2];  [3];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. AWE Aldermaston, Berkshire, Reading (United Kingdom)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lockheed Martin, Syracuse, NY (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1414125
Report Number(s):
LA-UR-16-23888
Journal ID: ISSN 0034-6748
Grant/Contract Number:
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: High Temperature Plasma Diagnostics , Madison, WI (United States), 5-6 Jun 2016; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; PrismSPECT; OPLIB; ATBASE; OMEGA; x-ray transmission spectroscopy; radiation transport; Foams; Computer modeling; Opacity; Atomic spectra; Experiment design

Citation Formats

Johns, Heather Marie, Lanier, Nicholas Edward, Kline, John L., Fontes, Christopher John, Perry, Theodore Sonne, Fryer, Christopher Lee, Brown, Colin R. D., Morton, John W., Hager, John D., and Sherrill, Manolo Edgar. Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments. United States: N. p., 2016. Web. doi:10.1063/1.4962195.
Johns, Heather Marie, Lanier, Nicholas Edward, Kline, John L., Fontes, Christopher John, Perry, Theodore Sonne, Fryer, Christopher Lee, Brown, Colin R. D., Morton, John W., Hager, John D., & Sherrill, Manolo Edgar. Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments. United States. doi:10.1063/1.4962195.
Johns, Heather Marie, Lanier, Nicholas Edward, Kline, John L., Fontes, Christopher John, Perry, Theodore Sonne, Fryer, Christopher Lee, Brown, Colin R. D., Morton, John W., Hager, John D., and Sherrill, Manolo Edgar. 2016. "Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments". United States. doi:10.1063/1.4962195. https://www.osti.gov/servlets/purl/1414125.
@article{osti_1414125,
title = {Atomic physics modeling of transmission spectra of Sc-doped aerogel foams to support OMEGA experiments},
author = {Johns, Heather Marie and Lanier, Nicholas Edward and Kline, John L. and Fontes, Christopher John and Perry, Theodore Sonne and Fryer, Christopher Lee and Brown, Colin R. D. and Morton, John W. and Hager, John D. and Sherrill, Manolo Edgar},
abstractNote = {Here, we present synthetic transmission spectra generated with PrismSPECT utilizing both the ATBASE model and the Los Alamos opacity library (OPLIB) to evaluate whether an alternative choice in atomic data will impact modeling of experimental data from radiation transport experiments using Sc-doped aerogel foams (ScSi6O12 at 75 mg/cm3 density). We have determined that in the 50-200 eV Te range there is a significant difference in the 1s-3p spectra, especially below 100 eV, and for Te = 200 eV above 5000 eV in photon energy. Examining synthetic spectra generated using OPLIB with 300 resolving power reveals spectral sensitivity to Te changes of ~3 eV.},
doi = {10.1063/1.4962195},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = 2016,
month = 9
}

Journal Article:
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  • We present synthetic transmission spectra generated with PrismSPECT utilizing both the ATBASE model and the Los Alamos opacity library (OPLIB) to evaluate whether an alternative choice in atomic data will impact modeling of experimental data from radiation transport experiments using Sc-doped aerogel foams (ScSi{sub 6}O{sub 12} at 75 mg/cm{sup 3} density). We have determined that in the 50-200 eV T{sub e} range there is a significant difference in the 1s-3p spectra, especially below 100 eV, and for T{sub e} = 200 eV above 5000 eV in photon energy. Examining synthetic spectra generated using OPLIB with 300 resolving power reveals spectralmore » sensitivity to T{sub e} changes of ∼3 eV.« less
  • Inertial Confinement Fusion (ICF) targets occasionally require the presence of diagnostic dopants to facilitate temperature measurements. To this end poly(4-methyl-1-pentene) (PMP or TPX) foams were produced with very low densities (3 to 5 mg/cc) and low levels of diagnostic dopants. The dopants added to the foams were titanium (Ti), chromium (Cr), and manganese (Mn). The transition metal doped foams were produced with metal loadings as high as 1 wt%, and densities between 3 and 5 mg/cc. The average foam densities were determined using {Beta}-transmission, and the dopant amounts were determined using x-ray fluorescence. Procedures for doped foam production and measurementsmore » of the resulting foam characteristics will be presented. 2 refs., 3 figs., 2 tabs.« less
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  • A multi wavelength, high contrast contact radiography system has been developed to characterize density variations in ultra-low density aerogel foams. These foams are used to generate a ramped pressure drive in materials strength experiments at the National Ignition Facility (NIF) and require precision characterization in order to reduce errors in measurements. The system was used to characterize density variations in carbon and silicon based aerogels to ~10.3% accuracy with ~30 μm spatial resolution. The system description, performance and measurement results collected using a 17.8 mg/cc carbon based JX–6 (C 20H 30) aerogel are discussed in this manuscript.
    Cited by 1