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APS » Journals » Phys. Rev. Lett. » Volume 68 » Issue 19
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Phys. Rev. Lett. 68, 2937–2940 (1992)

Electronic energy gap of molecular hydrogen from electrical conductivity measurements at high shock pressures

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W. J. Nellis, A. C. Mitchell, P. C. McCandless, D. J. Erskine, and S. T. Weir
Department of Physics, Lawrence Livermore National Laboratory, University of California, Livermore, California 94550

Received 6 April 1992; published in the issue dated 11 May 1992

Electrical conductivities were measured for liquid D2 and H2 shock compressed to pressures of 10–20 GPa (100–200 kbar), molar volumes near 8 cm3/mol, and calculated temperatures of 2900–4600 K. The semiconducting energy gap derived from the conductivities is 12 eV in good agreement with recent quasiparticle calculations and with oscillator frequencies measured in diamond-anvil cells.

© 1992 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.68.2937
DOI:
10.1103/PhysRevLett.68.2937
PACS:
62.50.+p, 72.20.-i
 
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