Free electron in compressed inert gases |
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Authors: | E B Gordon B M Smirnov |
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Institution: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(2) Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 127412, Russia |
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Abstract: | The behavior of excess and intrinsic free electrons inside compressed inert gases is described as a function of pressure by
using a pairwise approximation for the electron interaction with atomic surroundings. The change of sign from negative to
positive for the xenon atom electric potential inside condensed xenon is predicted to occur at a pressure around 3 GPa, preventing
slow electron embedding into solid xenon from the gas phase at higher pressure. To overcome this difficulty, the electrons
should be injected into a solid sample just before its pulsed shock loading. The ionization of xenon by pressure and its further
metallization are described by decreasing the forbidden gap at the expense of increasing the xenon ground electronic term
and simultaneous splitting of the upper ionized electronic state. A good coincidence between the calculated and measured pressure
of the dielectric-metal transition in xenon is demonstrated.
The text was submitted by the authors in English. |
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