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Since the discovery of molecular resonances in $^{12}$C+$^{12}$C in the early sixties a great deal of research work has been undertaken to study alpha-clustering. Our knowledge on physics of nuclear molecules has increased considerably and…

Nuclear Experiment · Physics 2019-09-16 C. Beck

Clusters of galaxies allow a direct estimate of the metallicity and metal production yield on the largest scale so far. The ratio of the total iron mass in the ICM to the total optical luminosity of the cluster (the iron…

Astrophysics · Physics 2007-05-23 Alvio Renzini

From observations of edge-on, late-type galaxies, we present morphological evidence that some nuclear star clusters have experienced in situ star formation. We find three nuclear clusters that, viewed from the edge-on perspective, have both…

Astrophysics · Physics 2007-05-23 Anil C. Seth , Julianne J. Dalcanton , Paul W. Hodge , Victor P. Debattista

Based on the results of a previous paper (Paper I), by performing the geometrical mapping via coherent states, phase transitions are investigated and compared within two algebraic cluster models. The difference between the Semimicroscopic…

Nuclear Theory · Physics 2013-05-30 P. R. Fraser , H. Yépez-Martínez , P. O. Hess , G. Lévai

We investigate the structural properties of nuclear star clusters in late-type spiral galaxies. More specifically, we fit analytical models to HST images of 39 nuclear clusters in order to determine their effective radii after correction…

The structure of the crust of a neutron star is completely determined by the experimentally measured nuclear masses up to a density of the order of 10^11 g.cm^{-3}. At higher densities, the composition of the crust still remains uncertain,…

Nuclear Theory · Physics 2008-11-26 Nicolas Chamel

In recent experiments on sodium chloride clusters structural transitions between nanocrystals with different cuboidal shapes were detected. Here we determine reaction pathways between the low energy isomers of one of these clusters,…

Condensed Matter · Physics 2007-05-23 Jonathan Doye , David Wales

Rich populations of clusters have been observed after femtosecond laser ablation of bulk silicon in vacuum. Size and velocity distributions of the clusters as well as their charge states have been analyzed by reflectron time-of-flight mass…

Atomic and Molecular Clusters · Physics 2007-05-23 Alexander V. Bulgakov , Igor Ozerov , Wladimir Marine

The magnetic susceptibility of electrons confined to a spherical cavity or a circular billiard shows slow oscillations as a function of the number of electrons, which are a new manifestation of the Super Shell Structure found in the free…

Atomic and Molecular Clusters · Physics 2009-10-31 S. Frauendorf , V. M. Kolomietz , A. G. Magner , A. I. Sanzhur

The synthesis of Ag nanoclusters in sodalime silicate glasses and silica was studied by optical absorption (OA) and electron spin resonance (ESR) experiments under both low (gamma-ray) and high (MeV ion) deposited energy density irradiation…

Materials Science · Physics 2007-12-23 R. Espiau de Lamaestre , H. Béa , H. Bernas , J. Belloni , J. L. Marignier

We show, with an example of Na_92, that for jellium metal clusters the interference of fast electron-waves emitted from equivalent sites on the cluster edge produces monochromatic oscillations in all photoionization observables as a…

Atomic Physics · Physics 2007-05-23 Himadri S. Chakraborty , M. E. Madjet

The consequences of some symmetries of the three-alpha system are discussed. In particular, the recent description of the low-energy spectrum of the 12C nucleus in terms of the Algebraic Cluster Model (ACM) is compared to that of the…

Nuclear Theory · Physics 2016-04-13 J. Cseh , R. Trencsényi

An oscillatory pattern in the smoothed quantum spectrum, which is unique for single-particle motions in a reflection-asymmetric superdeformed oscillator potential, is investigated by means of the semiclassical theory of shell structure.…

Nuclear Theory · Physics 2017-02-01 Ken-ichiro Arita , Kenichi Matsuyanagi

Electrons in a spherical ultracold quasineutral plasma at temperature in the Kelvin range can be created by laser excitation of an ultra-cold laser cooled atomic cloud. The dynamical behavior of the electrons is similar to the one described…

Quantum Physics · Physics 2014-11-18 D. Comparat , T. Vogt , N. Zahzam , M. Mudrich , P. Pillet

Semiclassical analysis of shell structures in realistic nuclear potentials are presented using periodic-orbit theory. We adopted r^alpha potential model and examined classical-quantum correspondence using Fourier transformation technique.…

Nuclear Theory · Physics 2009-11-11 Ken-ichiro Arita

The melting-like transition in sodium clusters Na_N, with N=55, 92, and 142 is studied by using constant-energy molecular dynamics simulations. An orbital-free version of the Car-Parrinello technique is used which scales linearly with…

Atomic and Molecular Clusters · Physics 2007-05-23 Andres Aguado , Jose M. Lopez , Julio A. Alonso , M. J. Stott

It is established that there exists a direct link between the formation history of star cluster populations and their host galaxies. However, our lack of understanding of the assembly of star cluster populations impede our ability to use…

We study the dynamical evolution of star clusters on eccentric orbits using a semi-analytical approach. In particular we adapt and extend the equations of EMACSS code, introduced by Gieles et al. (2014), to work with eccentric orbits. We…

Astrophysics of Galaxies · Physics 2019-04-23 Hamid Ebrahimi , Hosein Haghi , Pouria Khalaj , Akram Hasani Zonoozi , Ghasem Safaei

Galaxy clusters exhibit regular scaling relations among their bulk properties. These relations establish vital links between halo mass and cluster observables. Precision cosmology studies that depend on these links benefit from a better…

Astrophysics · Physics 2009-11-13 David A. Ventimiglia , G. Mark Voit , Megan Donahue , S. Ameglio

In this work, we have used the exchange-only optimized effective potential in the self-consistent calculations of the density functional Kohn-Sham equations for simple metal clusters in stabilized jellium model with self-compression. The…

Atomic and Molecular Clusters · Physics 2009-11-11 M. Payami