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Title: Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering

Abstract

We present experiments investigating dense carbon at pressures between 100 GPa and 200 GPa and temperatures between 5,000 K and 15,000 K. High-pressure samples with different temperatures were created by laser-driven shock compression of graphite and varying the initial density from 1.53 g/cm3 to 2.21 g/cm3 and the drive laser intensity from 7.1 TW/cm2 to 14.2 TW/cm2. In order to deduce temperatures, spectrally resolved X-ray scattering was applied to determine ion-ion structure factors at a scattering vector of k = 4.12 ∙ 1010m-1 which shows high sensitivity to temperature for the investigated sample conditions. After comparison to corresponding DFT-MD simulations, we were able to assign each structure factor a temperature. This information is indicative of the expected temperature range for the melting line of carbon at high pressures and can be compared to theoretical predictions.

Authors:
 [1];  [2];  [1];  [1];  [3];  [3];  [3];  [3];  [4];  [5];  [3];  [3]; ORCiD logo [3];  [3];  [6];  [3];  [5];  [4];  [3];  [1] more »; ORCiD logo [7] « less
  1. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
  2. Helmholtz-Zentrum Dresden (HZD), (Germany). Inst. of Radiation Physics
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  7. Helmholtz-Zentrum Dresden (HZD), (Germany). Inst. of Radiation Physics; Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1603871
Alternate Identifier(s):
OSTI ID: 1701888
Report Number(s):
LLNL-JRNL-739439
Journal ID: ISSN 1574-1818; 893058; TRN: US2104161
Grant/Contract Number:  
AC52-07NA27344; AC02-76SF00515; SF00515; FG52-10NA29649; DENA0001859; 18-ERD-033
Resource Type:
Accepted Manuscript
Journal Name:
High Energy Density Physics
Additional Journal Information:
Journal Volume: 32; Journal Issue: C; Journal ID: ISSN 1574-1818
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Warm dense matter; X-ray thomson scattering; Shock compression; DFT-MD Simulations; Carbon

Citation Formats

Helfrich, J., Vorberger, J., Frydrych, S., Schaumann, G., Ravasio, A., Gauthier, M., Fletcher, L. B., Nagler, B., Barbrel, B., Bachmann, B., Gamboa, E. J., Göde, S., Granados, E., Lee, H. J., Neumayer, P., Schumaker, W., Döppner, T., Falcone, R. W., Glenzer, S. H., Roth, M., and Kraus, D. Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering. United States: N. p., 2019. Web. doi:10.1016/j.hedp.2019.05.001.
Helfrich, J., Vorberger, J., Frydrych, S., Schaumann, G., Ravasio, A., Gauthier, M., Fletcher, L. B., Nagler, B., Barbrel, B., Bachmann, B., Gamboa, E. J., Göde, S., Granados, E., Lee, H. J., Neumayer, P., Schumaker, W., Döppner, T., Falcone, R. W., Glenzer, S. H., Roth, M., & Kraus, D. Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering. United States. https://doi.org/10.1016/j.hedp.2019.05.001
Helfrich, J., Vorberger, J., Frydrych, S., Schaumann, G., Ravasio, A., Gauthier, M., Fletcher, L. B., Nagler, B., Barbrel, B., Bachmann, B., Gamboa, E. J., Göde, S., Granados, E., Lee, H. J., Neumayer, P., Schumaker, W., Döppner, T., Falcone, R. W., Glenzer, S. H., Roth, M., and Kraus, D. Mon . "Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering". United States. https://doi.org/10.1016/j.hedp.2019.05.001. https://www.osti.gov/servlets/purl/1603871.
@article{osti_1603871,
title = {Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering},
author = {Helfrich, J. and Vorberger, J. and Frydrych, S. and Schaumann, G. and Ravasio, A. and Gauthier, M. and Fletcher, L. B. and Nagler, B. and Barbrel, B. and Bachmann, B. and Gamboa, E. J. and Göde, S. and Granados, E. and Lee, H. J. and Neumayer, P. and Schumaker, W. and Döppner, T. and Falcone, R. W. and Glenzer, S. H. and Roth, M. and Kraus, D.},
abstractNote = {We present experiments investigating dense carbon at pressures between 100 GPa and 200 GPa and temperatures between 5,000 K and 15,000 K. High-pressure samples with different temperatures were created by laser-driven shock compression of graphite and varying the initial density from 1.53 g/cm3 to 2.21 g/cm3 and the drive laser intensity from 7.1 TW/cm2 to 14.2 TW/cm2. In order to deduce temperatures, spectrally resolved X-ray scattering was applied to determine ion-ion structure factors at a scattering vector of k = 4.12 ∙ 1010m-1 which shows high sensitivity to temperature for the investigated sample conditions. After comparison to corresponding DFT-MD simulations, we were able to assign each structure factor a temperature. This information is indicative of the expected temperature range for the melting line of carbon at high pressures and can be compared to theoretical predictions.},
doi = {10.1016/j.hedp.2019.05.001},
journal = {High Energy Density Physics},
number = C,
volume = 32,
place = {United States},
year = {Mon Jul 01 00:00:00 EDT 2019},
month = {Mon Jul 01 00:00:00 EDT 2019}
}

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Cited by: 4 works
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Figures / Tables:

Figure 1 Figure 1: Sketch of the experimental setup. The FEL pulses are used to perform spectrally resolved X-ray scattering and diffraction measurements. The scattering spectrometer was placed in a backward scattering geometry and could scan scattering angles from 110 to 162 degrees in the experiment. In order to determine the shockmore » transit time and with that the shock velocity, the reflectivity drop on the target rear side was recorded by a VISAR system. A large area pixel detector (CSPAD) was applied for the diffraction measurements. The samples were rotated by 12 degrees in respect to the FEL Beam to allow simultaneous VISAR measurements.« less

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