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research article
White-line evolution in shocked solid Ta evidenced by synchrotron x-ray absorption spectroscopy
October 9, 2020
Time-resolved x-ray absorption experiments have been performed on shocked tantalum. Using a single 100 ps synchrotron x-ray pulse, nanosecond-lived equilibrium states of shocked solid Ta have been measured by L-3-edge absorption spectroscopy. The energy shift and intensity change of the white line were measured up to 130 GPa and 2000 K. The experimental results are discussed in light of density functional theory calculations and FEFF simulations. The absence of occurrence of the hcp-omega phase is suggested from the analysis of the shape of the white line.
Type
research article
Web of Science ID
WOS:000576600200002
Authors
Pepin, C. M.
•
Torchio, R.
•
Occelli, F.
•
Lescoute, E.
•
Mathon, O.
•
Recoules, V
•
•
Videau, L.
•
Benuzzi-Mounaix, A.
•
Vinci, T.
Publication date
2020-10-09
Published in
Volume
102
Issue
14
Article Number
144102
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
October 22, 2020
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