  We employ canonical Monte Carlo simulations to explore the properties of an
Ar film adsorbed on the external surface of a bundle of carbon nanotubes. The
study is concerned primarily with three properties: specific heat $c(T)$,
differential heat of adsorption $q_d$, and Ar-Ar correlation functions
$g(\mathbf{r})$. These measurable functions exhibit information about the
dependence of film structure on coverage and temperature.

Soft Condensed Matter