Structure measurements of compressed liquid boron at megabar pressures

Sebastien Le Pape; Alfredo A. Correa; Carsten Fortmann; Paul Neumayer; Tilo Döppner; Paul Davis; Tammy Ma; Laurent Divol; Kai Uwe Plagemann; E. Schwegler; Ronald Redmer; Siegfried Glenzer

doi:10.1088/1367-2630/15/8/085011

Structure measurements of compressed liquid boron at megabar pressures

Sebastien Le Pape
, Alfredo A. Correa
, Carsten Fortmann
, Paul Neumayer
, Tilo Döppner
, Paul Davis
, Tammy Ma
, Laurent Divol
, Kai Uwe Plagemann
, E. Schwegler
, Ronald Redmer
, Siegfried Glenzer

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the first measurements of the structure of compressed liquid boron, as it crosses the melt line in dynamic shock-compression experiments at a pressure of 100 GPa. Temporally, spectrally and angularly resolving x-ray scattering provides an independent and accurate measurement of the compression factor 1.5 and the electron density of 4 × 10²³ cm^-3 at moderate temperatures of 0.2-1 eV. At these conditions, the elastic scattering measurements provide the structure factor and indicate the liquid compressed phase with a coordination number of 8.3 in good agreement with predictions from first-principles molecular dynamic simulations.

Original language	English
Article number	085011
Journal	New Journal of Physics
Volume	15
DOIs	https://doi.org/10.1088/1367-2630/15/8/085011
Publication status	Published - 1 Aug 2013
Externally published	Yes

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title = "Structure measurements of compressed liquid boron at megabar pressures",

abstract = "We report on the first measurements of the structure of compressed liquid boron, as it crosses the melt line in dynamic shock-compression experiments at a pressure of 100 GPa. Temporally, spectrally and angularly resolving x-ray scattering provides an independent and accurate measurement of the compression factor 1.5 and the electron density of 4 × 1023 cm-3 at moderate temperatures of 0.2-1 eV. At these conditions, the elastic scattering measurements provide the structure factor and indicate the liquid compressed phase with a coordination number of 8.3 in good agreement with predictions from first-principles molecular dynamic simulations.",

author = "Pape, \{Sebastien Le\} and Correa, \{Alfredo A.\} and Carsten Fortmann and Paul Neumayer and Tilo D{\"o}ppner and Paul Davis and Tammy Ma and Laurent Divol and Plagemann, \{Kai Uwe\} and E. Schwegler and Ronald Redmer and Siegfried Glenzer",

year = "2013",

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doi = "10.1088/1367-2630/15/8/085011",

language = "English",

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TY - JOUR

T1 - Structure measurements of compressed liquid boron at megabar pressures

AU - Pape, Sebastien Le

AU - Correa, Alfredo A.

AU - Fortmann, Carsten

AU - Neumayer, Paul

AU - Döppner, Tilo

AU - Davis, Paul

AU - Ma, Tammy

AU - Divol, Laurent

AU - Plagemann, Kai Uwe

AU - Schwegler, E.

AU - Redmer, Ronald

AU - Glenzer, Siegfried

PY - 2013/8/1

Y1 - 2013/8/1

N2 - We report on the first measurements of the structure of compressed liquid boron, as it crosses the melt line in dynamic shock-compression experiments at a pressure of 100 GPa. Temporally, spectrally and angularly resolving x-ray scattering provides an independent and accurate measurement of the compression factor 1.5 and the electron density of 4 × 1023 cm-3 at moderate temperatures of 0.2-1 eV. At these conditions, the elastic scattering measurements provide the structure factor and indicate the liquid compressed phase with a coordination number of 8.3 in good agreement with predictions from first-principles molecular dynamic simulations.

AB - We report on the first measurements of the structure of compressed liquid boron, as it crosses the melt line in dynamic shock-compression experiments at a pressure of 100 GPa. Temporally, spectrally and angularly resolving x-ray scattering provides an independent and accurate measurement of the compression factor 1.5 and the electron density of 4 × 1023 cm-3 at moderate temperatures of 0.2-1 eV. At these conditions, the elastic scattering measurements provide the structure factor and indicate the liquid compressed phase with a coordination number of 8.3 in good agreement with predictions from first-principles molecular dynamic simulations.

U2 - 10.1088/1367-2630/15/8/085011

DO - 10.1088/1367-2630/15/8/085011

M3 - Article

AN - SCOPUS:84883386321

SN - 1367-2630

VL - 15

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 085011

ER -

Structure measurements of compressed liquid boron at megabar pressures

Abstract

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