Simultaneous measurements of several state variables in shocked carbon by imaging x-ray scattering
We apply the novel experimental technique of imaging x-ray Thomson scattering to measure the spatial profiles of the temperature, ionization state, relative material density, and the shock speed in a high-energy density system. A blast wave driven in a low-density foam is probed with 90∘ scattering...
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| Veröffentlicht in: | Physics of plasmas 2014-04, Vol.21 (4) |
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| container_title | Physics of plasmas |
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| creator | Gamboa, E. J. Drake, R. P. Falk, K. Keiter, P. A. Montgomery, D. S. Benage, J. F. Trantham, M. R. |
| description | We apply the novel experimental technique of imaging x-ray Thomson scattering to measure the spatial profiles of the temperature, ionization state, relative material density, and the shock speed in a high-energy density system. A blast wave driven in a low-density foam is probed with 90∘ scattering of 7.8 keV helium-like nickel x-rays, which are spectrally dispersed and resolved in one spatial dimension by a doubly curved crystal. The inferred properties of the shock are shown to be self-consistent with 1D analytical estimates. These high-resolution measurements enable a direct comparison of the observed temperature with the results from hydrodynamic simulations. We find good agreement with the simulations for the temperature at the shock front but discrepancies in the modeling of the spatial temperature profile and shock speed. These results indicate the challenges in modeling the shock dynamics of structured materials like foams, commonly used in many high-energy density and laboratory astrophysics experiments. |
| doi_str_mv | 10.1063/1.4869241 |
| format | Article |
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J. ; Drake, R. P. ; Falk, K. ; Keiter, P. A. ; Montgomery, D. S. ; Benage, J. F. ; Trantham, M. R.</creator><creatorcontrib>Gamboa, E. J. ; Drake, R. P. ; Falk, K. ; Keiter, P. A. ; Montgomery, D. S. ; Benage, J. F. ; Trantham, M. R.</creatorcontrib><description>We apply the novel experimental technique of imaging x-ray Thomson scattering to measure the spatial profiles of the temperature, ionization state, relative material density, and the shock speed in a high-energy density system. A blast wave driven in a low-density foam is probed with 90∘ scattering of 7.8 keV helium-like nickel x-rays, which are spectrally dispersed and resolved in one spatial dimension by a doubly curved crystal. The inferred properties of the shock are shown to be self-consistent with 1D analytical estimates. These high-resolution measurements enable a direct comparison of the observed temperature with the results from hydrodynamic simulations. We find good agreement with the simulations for the temperature at the shock front but discrepancies in the modeling of the spatial temperature profile and shock speed. 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J.</creatorcontrib><creatorcontrib>Drake, R. P.</creatorcontrib><creatorcontrib>Falk, K.</creatorcontrib><creatorcontrib>Keiter, P. A.</creatorcontrib><creatorcontrib>Montgomery, D. S.</creatorcontrib><creatorcontrib>Benage, J. F.</creatorcontrib><creatorcontrib>Trantham, M. R.</creatorcontrib><title>Simultaneous measurements of several state variables in shocked carbon by imaging x-ray scattering</title><title>Physics of plasmas</title><description>We apply the novel experimental technique of imaging x-ray Thomson scattering to measure the spatial profiles of the temperature, ionization state, relative material density, and the shock speed in a high-energy density system. A blast wave driven in a low-density foam is probed with 90∘ scattering of 7.8 keV helium-like nickel x-rays, which are spectrally dispersed and resolved in one spatial dimension by a doubly curved crystal. The inferred properties of the shock are shown to be self-consistent with 1D analytical estimates. These high-resolution measurements enable a direct comparison of the observed temperature with the results from hydrodynamic simulations. We find good agreement with the simulations for the temperature at the shock front but discrepancies in the modeling of the spatial temperature profile and shock speed. These results indicate the challenges in modeling the shock dynamics of structured materials like foams, commonly used in many high-energy density and laboratory astrophysics experiments.</description><subject>Astrophysics</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>CARBON</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>Computer simulation</subject><subject>DENSITY</subject><subject>Flux density</subject><subject>FOAMS</subject><subject>HELIUM</subject><subject>Ionization</subject><subject>Modelling</subject><subject>NICKEL</subject><subject>Plasma physics</subject><subject>SIMULATION</subject><subject>State variable</subject><subject>THOMSON SCATTERING</subject><subject>X RADIATION</subject><subject>X ray spectra</subject><subject>X-RAY DIFFRACTION</subject><subject>X-ray scattering</subject><subject>X-rays</subject><issn>1070-664X</issn><issn>1089-7674</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqd0EtLAzEQAOBFFHwe_AcBTwqreW6yRym-oOBBBW9hNpu0q92kJtli_71bWujd0wzDx7yK4pLgW4IrdkduuapqyslBcUKwqktZSX64ySUuq4p_HhenKX1hjHkl1EnRvHX9sMjgbRgS6i2kIdre-pxQcCjZlY2wQClDtmgFsYNmYRPqPErzYL5tiwzEJnjUrFHXw6zzM_RbRlijZCBnG8fCeXHkYJHsxS6eFR-PD--T53L6-vQyuZ-WhgmRSxASY-WEY061tbLE1VgJSlvXyrYximMAapwUQFlNgUojHRtPlG0tRAOEnRVX274h5U4n02Vr5iZ4b03WlFLBGKd7tYzhZ7Ap668wRD8upimhslKcEzGq660yMaQUrdPLON4X15pgvXm0Jnr36NHebO1mJOQu-P_hVYh7qJetY38Hlox1</recordid><startdate>20140401</startdate><enddate>20140401</enddate><creator>Gamboa, E. 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J.</creatorcontrib><creatorcontrib>Drake, R. P.</creatorcontrib><creatorcontrib>Falk, K.</creatorcontrib><creatorcontrib>Keiter, P. A.</creatorcontrib><creatorcontrib>Montgomery, D. S.</creatorcontrib><creatorcontrib>Benage, J. F.</creatorcontrib><creatorcontrib>Trantham, M. R.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Physics of plasmas</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gamboa, E. J.</au><au>Drake, R. P.</au><au>Falk, K.</au><au>Keiter, P. A.</au><au>Montgomery, D. S.</au><au>Benage, J. F.</au><au>Trantham, M. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simultaneous measurements of several state variables in shocked carbon by imaging x-ray scattering</atitle><jtitle>Physics of plasmas</jtitle><date>2014-04-01</date><risdate>2014</risdate><volume>21</volume><issue>4</issue><issn>1070-664X</issn><eissn>1089-7674</eissn><coden>PHPAEN</coden><abstract>We apply the novel experimental technique of imaging x-ray Thomson scattering to measure the spatial profiles of the temperature, ionization state, relative material density, and the shock speed in a high-energy density system. A blast wave driven in a low-density foam is probed with 90∘ scattering of 7.8 keV helium-like nickel x-rays, which are spectrally dispersed and resolved in one spatial dimension by a doubly curved crystal. The inferred properties of the shock are shown to be self-consistent with 1D analytical estimates. 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| ispartof | Physics of plasmas, 2014-04, Vol.21 (4) |
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| subjects | Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY CARBON CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Computer simulation DENSITY Flux density FOAMS HELIUM Ionization Modelling NICKEL Plasma physics SIMULATION State variable THOMSON SCATTERING X RADIATION X ray spectra X-RAY DIFFRACTION X-ray scattering X-rays |
| title | Simultaneous measurements of several state variables in shocked carbon by imaging x-ray scattering |
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