Tantalum sound velocity under shock compression

Akin, Minta C.; Nguyen, Jeffrey H.; Beckwith, Martha A.; Chau, Ricky; Ambrose, W. Patrick; Fat’yanov, Oleg V.; Asimow, Paul D.; Holmes, Neil C.

doi:10.1063/1.5054332

Tantalum sound velocity under shock compression

Journal Article · Sun Apr 14 00:00:00 EDT 2019 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.5054332· OSTI ID:1525750

^[1]; Nguyen, Jeffrey H. ^[1]; Beckwith, Martha A. ^[1]; Chau, Ricky ^[2]; Ambrose, W. Patrick ^[1]; ^[3]; ^[3]; Holmes, Neil C. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Livermore National Laboratory, Livermore, California 94550, USA
California Inst. of Technology (CalTech), Pasadena, CA (United States)

We used several variations of the shock compression method to measure the longitudinal sound velocity of shocked tantalum over the pressure range 37–363 GPa with a typical uncertainty of 1.0%. These data are consistent with Ta remaining in the bcc phase along the principal Hugoniot from ambient pressure to ≈300 GPa, at which pressure melting occurs. These data also do not support the putative melting phenomena reported below 100 GPa in some static compression experiments.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1525750

Alternate ID(s):: OSTI ID: 1506541

Report Number(s):: LLNL-JRNL--672892; 793827

Journal Information:: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 14 Vol. 125; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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