Magic numbers for classical Lennard‐Jones cluster heat capacities

Magic Numbers for Classical Lennard-Jones Cluster Heat Capacities

Heat capacity curves as functions of temperature for classical atomic clusters bound by pairwise Lennard-Jones potentials were calculated for aggregate sizes 4 ≤ N ≤ 24 using Monte Carlo methods. J-walking (or jump-walking) was used to overcome convergence difficulties due to quasi-ergodicity in the solid-liquid transition region. The heat capacity curves were found to differ markedly and nonmo...

Magic Numbers in Protein Structures.

Magic numbers of silicon clusters.

A structural model for intermediate sized silicon clusters is proposed that is able to generate unique structures without any dangling bonds. This structural model consists of bulk-like core of five atoms surrounded by fullerene-like surface. Reconstruction of the ideal fullerene geometry results in the formation of crown atoms surrounded by π-bonded dimer pairs. This model yields unique struct...

Effective interactions and magic numbers

Takaharu Otsuka,∗1,∗2 Yutaka Utsuno,∗3 Rintaro Fujimoto,∗1 B. Alex Brown,∗4 Michio Honma,∗5 and Takahiro Mizusaki∗6 ∗1Department of Physics, University of Tokyo ∗2RI Beam Science Laboratory, RIKEN ∗3Japan Atomic Energy Research Institute ∗4National Superconducting Cyclotron Laboratory, Michigan State University, USA ∗5Center for Mathematical Sciences, University of Aizu ∗6Department of Law, Sen...

Gallium cluster "magic melters".

Calorimetry measurements (using a method based on multicollision induced dissociation) have been performed for unsupported gallium clusters, Gan+ (n = 30-50 and 55). Melting transitions have been identified from spikes in the heat capacities recorded as a function of temperature. There are enormous fluctuations in the melting temperatures and the heats of fusion with cluster size. Clusters with...