No abstract

No abstract

The sorption properties of carbon nanosystems are investigated using appropriate distribution functions. The adsorption capacities of carbon nanofibers for hydrogen are calculated in the singlet approximation under the assumption that adsorbent molecules elastically interact with walls. The optimum interplanar distances determined for carbon nanofibers are as follows: 0.39 ± 0.07 nm for the reduced density n 0 = 0.15 and 0.46 ± 0.04 nm for the reduced density n 0 = 0.3 .

The glass transition in argon at a high cooling rate is simulated. At a temperature of 50 K (considerably below the melting temperature T f = 83.8 K), the fluctuation volume fraction reaches the constant value f g ≅ 0.03-0.05, which is close in the order of magnitude to the criterion for the glass transition in liquids f g ≈ const 0.02-0.03 within the excited state model. At this temperature, the second maximum of the radial distribution function is split as a result of the glass transition at the temperature T g ≈ 50 K. The approximate empirical "two-thirds" rule T g ≈ (2/3) T f is reasonably satisfied for argon. The data obtained are interpreted in the framework of the excited state model.

No abstract