Laser-generated metallic hydrogen

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Hydrogen reaches the minimum conductivity of a metal at 140 GPa (1.4 Mbar) and 3000 K. These conditions were achieved using a two-stage light-gas gun. The authors have investigated computationally the use of a laser-heated hohlraum to shock compress hydrogen to these conditions in samples sufficiently thin that the metallic fluid might be quenched metastably on release of dynamic pressure. A configuration was found such that the duration of maximum pressure is sufficiently long that the hydrogen film cools by thermal conduction before pressure is released.

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295 Kilobytes pages

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Nellis, W J & Pollaine, S M August 27, 1999.

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Hydrogen reaches the minimum conductivity of a metal at 140 GPa (1.4 Mbar) and 3000 K. These conditions were achieved using a two-stage light-gas gun. The authors have investigated computationally the use of a laser-heated hohlraum to shock compress hydrogen to these conditions in samples sufficiently thin that the metallic fluid might be quenched metastably on release of dynamic pressure. A configuration was found such that the duration of maximum pressure is sufficiently long that the hydrogen film cools by thermal conduction before pressure is released.

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295 Kilobytes pages

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  • AIRAPT, International Conference on the Advancement of High Pressure Science and Technology Proceedings, Honolulu, HI (US), 07/26/1999--07/30/1999

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  • Report No.: UCRL-JC-135176
  • Report No.: DP0210000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14569
  • Archival Resource Key: ark:/67531/metadc618483

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Office of Scientific & Technical Information Technical Reports

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  • August 27, 1999

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  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 2:40 p.m.

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Nellis, W J & Pollaine, S M. Laser-generated metallic hydrogen, article, August 27, 1999; California. (digital.library.unt.edu/ark:/67531/metadc618483/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.