Browsing Mathemateg a Ffiseg / Mathematics & Physics by Subject "NEUTRON-DIFFRACTION"

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  • Daisenberger, Dominik; Wilson, Mark; McMillan, Paul F.; Cabrera, Raul Quesada; Wilding, Martin C.; Machon, Denis (2007-06-28)
    A low- to high-density pressure-driven phase transition in amorphous silicon is investigated by synchrotron x-ray diffraction in the diamond anvil cell. Complementary atomistic molecular dynamics computer simulations provide ...
  • Skinner, Lawrie B.; Barnes, Adrian C.; Salmon, Philip S.; Hennet, Louis; Fischer, Henry E.; Benmore, Chris J.; Kohara, Shinji; Weber, J. K. Richard; Bytchkov, Aleksei; Wilding, Martin C.; Parise, John B.; Farmer, Thomas O.; Pozdnyakova, Irina; Tumber, Sonia K.; Ohara, Koji (2013-01-03)
    The structure of liquid alumina at a temperature similar to 2400 K near its melting point was measured using neutron and high-energy x-ray diffraction by employing containerless aerodynamic-levitation and laser-heating ...
  • McMillan, Paul F.; Wilson, Mark; Wilding, Martin Charles; Daisenberger, Dominik; Mezouar, Mohamed; Greaves, Neville (2007-10-17)
    Phase transitions in the liquid state can be related to pressure-driven fluctuations developed in the density (i.e., the inverse of the molar volume; ρ = 1/V) or the entropy (S(T )) rather than by gradients in the chemical ...
  • Wilding, Martin C.; Wilson, Mark; McMillan, Paul F. (2006)
    When amorphous materials are compressed their structures are expected to change in response to densification. In some cases, the changes in amorphous structure can be discontinuous and they can even have the character of ...

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