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There has long been a discrepancy between the size distributions of Ar$_n^+$ clusters measured by different groups regarding whether or not magic numbers appear at sizes corresponding to the closure of icosahedral (sub-)shells. We show that…

Atomic and Molecular Clusters · Physics 2019-12-04 Michael Gatchell , Paul Martini , Lorenz Kranabetter , Bilal Rasul , Paul Scheier

Density-functional theory has been applied to investigate systematics of sodium clusters Na_n in the size range of n= 39-55. A clear evolutionary trend in the growth of their ground-state geometries emerges. The clusters at the beginning of…

Atomic and Molecular Clusters · Physics 2009-11-13 Shahab Zorriasatein , Mal-Soon Lee , D. G. Kanhere

In this work, we present large-scale electron-correlated computations on various conformers of B$_{12}$H$_{12}$ and B$_{12}$H$_{6}$ clusters, to understand the reasons behind the high stability of di-anion icosahedron ($I_{h}$) and…

Chemical Physics · Physics 2022-01-03 Pritam Bhattacharyya , Ihsan Boustani , Alok Shukla

We report the synthesis of complex salts made from the cationic surfactant dodecyltrimethyl-ammonium and diblock copolymers poly(acrylic acid)-block-poly(acrylamide) of different molecular weights. In water, the complex salts self-assemble…

Materials Science · Physics 2013-10-29 Leticia Vitorazi , Jean-Francois Berret , Watson Loh

The paper presents the results of the experimental study of polarization bremsstrahlung profile halfwidth performed on free xenon clusters with various atom numbers. We used 0.7- and 0.3-keV electrons to excite mainly the core and the…

Atomic and Molecular Clusters · Physics 2012-11-06 E. V. Gnatchenko , A. N. Nechay , A. A. Tkachenko , V. N. Samovarov

An analysis of the structural properties of three-dimensional Coulomb clusters confined in a spherical parabolic trap is presented. Based on extensive high accuracy computer simulations the shell configurations and energies for particle…

Plasma Physics · Physics 2007-07-29 P. Ludwig , S. Kosse , M. Bonitz

We use hydrodynamical/N-body simulations to interpret the newly discovered Bullet-cluster-like merging cluster, ZwCl 0008.8+5215 (ZwCl 0008 hereafter), where a dramatic collision is apparent from multi-wavelength observations. We have been…

Cosmology and Nongalactic Astrophysics · Physics 2018-08-08 Sandor M. Molnar , Tom Broadhurst

The thermodynamic stability of structural isomers of $\mathrm{C}_{24}$, $\mathrm{C}_{26}$, $\mathrm{C}_{28}$ and $\mathrm{C}_{32}$, including fullerenes, is studied using density functional and quantum Monte Carlo methods. The energetic…

Atomic and Molecular Clusters · Physics 2009-10-31 P. R. C. Kent , M. D. Towler , R. J. Needs , G. Rajagopal

This study contributes to the body of work on instabilities in the homogeneous cooling system focusing on clustering in the multiphase gas-particle system. The critical system size for the onset of instability, $L^*_c$, is studied via three…

Fluid Dynamics · Physics 2018-09-13 William D. Fullmer , Xiaoqi Li , Xiaolong Yin , Christine M. Hrenya

The existence of macroscopic shell structure of submicron metal clusters is known for several decades. Since the most studies provide theoretical analysis for clusters of spherical shape, the electron density inhomogeneities caused by shell…

Atomic and Molecular Clusters · Physics 2025-01-16 S. E. Kuratov , I. S. Galtsov , S. A. Dyachkov , S. Yu. Igashov

Traditionally, the condensation sequence of circumstellar dust is predicted based on the thermodynamic stabilities of specific condensates in the macroscopic bulk phase. However, at the (sub-)nanometer scale clusters with non-crystalline…

Astrophysics of Galaxies · Physics 2025-10-16 David Gobrecht

Background: A recent inelastic alpha-scattering experiment [Phys. Rev. Lett. 129, 102701 (2022)] found $0^+$ resonances in $^{24}$Mg on and above the $^{12}$C+$^{12}$C break-up threshold. It has been conjectured that the states have a…

Nuclear Theory · Physics 2023-12-14 J. Cseh , G. Riczu , D. G. Jenkins

Most natural and artificial materials have crystalline structures from which abundant topological phases emerge [1-6]. The bulk-edge correspondence, widely-adopted in experiments to determine the band topology from edge properties, however,…

Materials Science · Physics 2021-01-26 Yang Liu , Shuwai Leung , Fei-Fei Li , Zhi-Kang Lin , Xiufeng Tao , Yin Poo , Jian-Hua Jiang

Multi-component aggregates are being intensively researched in various fields because of their highly tunable properties and wide applications. Due to the complex configurational space of these systems, research would greatly benefit from a…

Atomic and Molecular Clusters · Physics 2025-02-26 Nicolò Canestrari , Diana Nelli , Riccardo Ferrando

We numerically study structural properties of mechanically stable packings of hard spheres (HS), in a wide range of packing fractions $0.53 \le \phi \le 0.72$. Detailed structural information is obtained from the analysis of orientational…

Soft Condensed Matter · Physics 2014-07-30 Boris A. Klumov , Yuliang Jin , Hernan A. Makse

In this work, a shell model for metal clusters up to 220 valence electrons is used to obtain the fractional occupation probabilities of the electronic orbitals. Then, the calculation of a statistical measure of complexity and the…

Atomic and Molecular Clusters · Physics 2010-02-05 Jaime Sanudo , Ricardo Lopez-Ruiz

We investigate the existence of stable charged metallic bubbles using the shell correction method. We find that for a given mesoscopic system of n atoms of a given metal and q less n (positive) elementary charges, a metallic bubble turns…

Condensed Matter · Physics 2009-10-30 Krzysztof Pomorski , Klaus Dietrich

A comprehensive study on the relative structural stability of various nanostructures of carbon clusters (including fullerenes, cages, onions, icosahedral clusters, bucky-diamond clusters, spherically bulk terminated clusters, and clusters…

Materials Science · Physics 2008-07-22 Ming Yu , Indira Chaudhuri , C. Leahy , C. S. Jayanthi , S. Y. Wu

We analyze the geometric structure and mechanical stability of a complete set of isostatic and hyperstatic sphere packings obtained via exact enumeration. The number of nonisomorphic isostatic packings grows exponentially with the number of…

Soft Condensed Matter · Physics 2015-06-04 Robert S. Hoy , Jared Harwayne-Gidansky , Corey S. O'Hern

Since the pioneering discovery of molecular resonances in the 12C+12C reaction more than half a century ago a great deal of research work has been undertaken in alpha clustering. Our knowledge on physics of nuclear molecules has increased…

Nuclear Experiment · Physics 2017-11-08 C. Beck