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Title: Quantum Monte Carlo determination of the principal Hugoniot of deuterium

Journal Article · · Physical Review. B

Here, we present coupled electron-ion Monte Carlo results for the principal Hugoniot of deuterium together with an accurate study of the initial reference state of shock-wave experiments. We discuss the influence of nuclear quantum effects, thermal electronic excitations, and the convergence of the potential energy surface by wave-function optimization within variational Monte Carlo and projection quantum Monte Carlo methods. Compared to a previous study, our calculations also include low pressure-temperature (P,T) conditions resulting in close agreement with experimental data, while our revised results at higher (P,T) conditions still predict a more compressible Hugoniot than experimentally observed.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); European Union’s Horizon 2020; Foundation NanoSciences Grenoble; Agence Nationale de la Recherche (ANR); National Science Foundation (NSF); State of Illinois; CIMENT
Grant/Contract Number:
NA0001789; 676531; 824158; OCI 07-25070; CPER07-13 CIRA; ANR-10-EQPX-29-01
OSTI ID:
1850287
Journal Information:
Physical Review. B, Vol. 102, Issue 14; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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