Metallization of fluid hydrogen

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The electrical activity of liquid hydrogen has been measured at the high dynamic pressures, and temperatures that can be achieved with a reverberating shock wave. The resulting data are most naturally interpreted in terms of a continuous transition from a semiconducting to a metallic, largely diatomic fluid, the latter at 140 CPa, (ninefold compression) and 3000 K. While the fluid at these conditions resembles common liquid metals by the scale of its resistivity of 500 micro-ohm-cm, it differs by retaining a strong pairing character, and the precise mechanism by which a metallic state might be attained is still a matter ... continued below

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19 p.

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Nellis, W.J.; Louis, A.A. & Ashcroft, N.W. May 14, 1997.

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Description

The electrical activity of liquid hydrogen has been measured at the high dynamic pressures, and temperatures that can be achieved with a reverberating shock wave. The resulting data are most naturally interpreted in terms of a continuous transition from a semiconducting to a metallic, largely diatomic fluid, the latter at 140 CPa, (ninefold compression) and 3000 K. While the fluid at these conditions resembles common liquid metals by the scale of its resistivity of 500 micro-ohm-cm, it differs by retaining a strong pairing character, and the precise mechanism by which a metallic state might be attained is still a matter of debate. Some evident possibilities include (i) physics of a largely one-body character, such as a band-overlap transition, (ii) physics of a strong-coupling or many-body character,such as a Mott-Hubbard transition, and (iii) process in which structural changes are paramount.

Physical Description

19 p.

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OSTI as DE98051480

Other: FDE: PDF; PL:

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  • Meeting of the Royal Society of London, London (United Kingdom), 3-7 Mar 1997

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  • Other: DE98051480
  • Report No.: UCRL-JC--127683
  • Report No.: CONF-9703136--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 647054
  • Archival Resource Key: ark:/67531/metadc712000

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Office of Scientific & Technical Information Technical Reports

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  • May 14, 1997

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 10, 2017, 2:31 p.m.

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Nellis, W.J.; Louis, A.A. & Ashcroft, N.W. Metallization of fluid hydrogen, article, May 14, 1997; California. (digital.library.unt.edu/ark:/67531/metadc712000/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.