| Literature DB >> 34145307 |
J Lütgert1,2, J Vorberger3, N J Hartley3,4, K Voigt3,5, M Rödel3,5, A K Schuster3,5, A Benuzzi-Mounaix6, S Brown4, T E Cowan3,7, E Cunningham4, T Döppner8, R W Falcone9,10, L B Fletcher4, E Galtier4, S H Glenzer4, A Laso Garcia3, D O Gericke11, P A Heimann4, H J Lee4, E E McBride4,12, A Pelka3, I Prencipe3, A M Saunders9, M Schölmerich12, M Schörner4,13, P Sun4, T Vinci6, A Ravasio6, D Kraus3,13.
Abstract
We present structure and equation of state (EOS) measurements of biaxially orientated polyethylene terephthalate (PET, [Formula: see text], also called mylar) shock-compressed to ([Formula: see text]) GPa and ([Formula: see text]) K using in situ X-ray diffraction, Doppler velocimetry, and optical pyrometry. Comparing to density functional theory molecular dynamics (DFT-MD) simulations, we find a highly correlated liquid at conditions differing from predictions by some equations of state tables, which underlines the influence of complex chemical interactions in this regime. EOS calculations from ab initio DFT-MD simulations and shock Hugoniot measurements of density, pressure and temperature confirm the discrepancy to these tables and present an experimentally benchmarked correction to the description of PET as an exemplary material to represent the mixture of light elements at planetary interior conditions.Entities:
Year: 2021 PMID： 34145307 DOI： 10.1038/s41598-021-91769-0
Source DB: PubMed Journal: Sci Rep ISSN： 2045-2322 Impact factor: 4.379