Naslov
Helium 4 Dimer in Nanotubes
(Helium 4 Dimer in Cylindrical Nanochannels)

Autori
Vranješ, Leandra ; Antunović, Željko ; Kilić, Srećko

Izvornik
Journal of Chemical Information and Computer Sciences (0095-2338) 41 (2001), 4; 1028-1031

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
helium; nanotubes; binding energy

Sažetak
The ground state of helium 4 dimer is considered using Monte Carlo technique. In a cylinder, with hard core wall, binding depends on its radius. For small enough radius there is binding like in the one-dimensional case. With increase of the radius the binding becomes stronger, reaches its maximum value and then slowly diminishes. In conical geometry, that may be realized as a generalization of a cylindrical one, this dependence of the binding energy on the radius might lead to an effective force which tends to move the molecule towards the region of the maximal binding. Thus, in channels, with non-homogeneous cross section, motion of particles is easier in dimer form. In addition, the square of the momentum and of the particle separation along the cylinder axis and in the plane, perpendicular to it, are calculated as well.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA