Polymerization, shock cooling and ionization of liquid nitrogen

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The trajectory of thermodynamic states passed through by the nitrogen Hugoniot starting from the liquid and up to 10{sup 6} GPa has been studied. An earlier report of cooling in the doubly shocked liquid, near 50 to 100 GPa and 7500 K, is revisited in light of the recent discovery of solid polymeric nitrogen. It is found that cooling occurs when the doubly shocked liquid is driven into a volume near the molecular to polymer transition and raising the possibility of a liquid-liquid phase transition (LLPT). By increasing the shock pressure and temperature by an order of magnitude, theoretical calculations ... continued below

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Ross, M & Rogers, F July 21, 2005.

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The trajectory of thermodynamic states passed through by the nitrogen Hugoniot starting from the liquid and up to 10{sup 6} GPa has been studied. An earlier report of cooling in the doubly shocked liquid, near 50 to 100 GPa and 7500 K, is revisited in light of the recent discovery of solid polymeric nitrogen. It is found that cooling occurs when the doubly shocked liquid is driven into a volume near the molecular to polymer transition and raising the possibility of a liquid-liquid phase transition (LLPT). By increasing the shock pressure and temperature by an order of magnitude, theoretical calculations predict thermal ionization of the L shell drives the compression maxima to 5-6 fold compression at 10 Mbar (T {approx} 3.5 10{sup 5} K) and at 400 Mbar (T {approx} 2.3 10{sup 6} K) from K shell ionization. Near a pressure of 10{sup 6} GPa the K shell ionizes completely and the Hugoniot approaches the classical ideal gas compression fourfold limit.

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PDF-file: 20 pages; size: 0.4 Mbytes

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  • Journal Name: Physical Review B, vol. 74, N/A, July 11, 2006, pp. 024103; Journal Volume: 74

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  • Report No.: UCRL-JRNL-213966
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 936438
  • Archival Resource Key: ark:/67531/metadc901813

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 21, 2005

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 7, 2016, 7 p.m.

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Ross, M & Rogers, F. Polymerization, shock cooling and ionization of liquid nitrogen, article, July 21, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc901813/: accessed November 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.