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Reduction of shock-...
Reduction of shock-wave data with mean-field potential approach
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Wang, Y. (författare)
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Ahuja, Rajeev (författare)
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- Johansson, Börje (författare)
- KTH,Materialvetenskap
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(creator_code:org_t)
- AIP Publishing, 2002
- 2002
- Engelska.
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Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 92:11, s. 6616-6620
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Based on ab initio calculated 0 K results for the assumed face- or body-centered-cubic ground state, the thermal volume expansion of the principal Hugoniot relative to the 300 K isotherm is calculated using the recently developed mean-field potential approach for Cu, Ta, Mo, Pt, and Au. Neglecting shock melting and phase dependence of the high-temperature equation of state, shock-reduced 300 K isotherms at pressures up to 1 TPa (10 Mbar) are derived for these metals by substracting the calculated thermal volume expansion from the experimental shock-wave data. This approach does not invoke any empirical assumptions regarding the Gruneisen parameters or heat capacities. The excellent agreement between such shock-reduced data and the normal standards or empirical reductions by other authors shows that the reduced results can be used as pressure standards for the widely employed static diamond-anvil-cell experiments.
Nyckelord
- x-ray-diffraction
- high-pressure
- equation
- state
- compression
- iron
- gpa
- al
- mo
- tantalum
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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