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Title: Heat-release equation of state and thermal conductivity of warm dense carbon by proton differential heating

Journal Article · · Physical Review E
ORCiD logo [1];  [1];  [2];  [1];  [1];  [1];  [1];  [3];  [3];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
  3. Univ. of California San Diego, La Jolla, CA (United States)

Warm dense carbon is generated at 0.3–2.0 g/cc and 1–7 eV by proton heating. The release equation of state (EOS) after heating and thermal conductivity of warm dense carbon are studied experimentally in this regime using a Au/C dual-layer target to initiate a temperature gradient and two picosecond time-resolved diagnostics to probe the surface expansion and heat flow. Comparison between the data and simulations using various EOSs and thermal conductivity models is quantified with a statistical χ2 analysis. In conclusion, out of seven EOS tables and five thermal conductivity models, only L9061 with the Lee-More model provides a probability above 50% to match all data.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; LFR-17-449059
OSTI ID:
1597232
Report Number(s):
LLNL-JRNL-755776; PLEEE8; 941920; TRN: US2103061
Journal Information:
Physical Review E, Vol. 100, Issue 4; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Figures / Tables (7)