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The phase stability of NiAl clusters of nanometer size was studied by using the embedded atom model and Monte Carlo simulation techniques. For temperatures of 500 and 1000 K and for a range of compositions below 70 at.% Al, the equilibrium…

Materials Science · Physics 2024-02-09 Susana Ramos de Debiaggi , Jose Miguel Campillo-Robles , Alejandro Caro

We give an overview of results and prospects of nuclear clustering studies on the grounds of the observations of interactions of light stable and radioactive nuclei with an initial energy above 1 A GeV in nuclear emulsions. Thank to the…

The simple alkali metal Na, that crystallizes in a body-centred cubic structure at ambient pressure, exhibits a wealth of complex phases at extreme conditions as found by experimental studies. The analysis of the mechanism of stabilization…

Materials Science · Physics 2009-09-25 V F Degtyareva , O Degtyareva

Dimers of tetracene molecules are formed inside helium nanodroplets and identified through covariance analysis of the emission directions of kinetic tetracene cations stemming from femtosecond laser-induced Coulomb explosion. Next, the…

Atomic and Molecular Clusters · Physics 2019-07-09 Constant Schouder , Adam S. Chatterley , Florent Calvo , Lars Christiansen , Henrik Stapelfeldt

Using molecular dynamics, we study the nucleation and stability of bulk nanobubble clusters. We study the formation, growth, and final size of bulk nanobubbles. We find that, as long as the bubble-bubble interspacing is small enough, bulk…

Fluid Dynamics · Physics 2012-11-19 Joost H. Weijs , James R. T. Seddon , D. Lohse

Magnesium atoms embedded in superfluid helium nanodroplets have been identified to arrange themselves in a metastable network, refered to as foam. In order to investigate the ionization dynamics of this unique structure with respect to a…

Atomic and Molecular Clusters · Physics 2015-06-12 S. Göde , R. Irsig , J. Tiggesbäumker , K. -H. Meiwes-Broer

Rubidium dimers residing on the surface of He nanodroplets are doubly ionized by an intense fs laser pulse leading to fragmentation into a pair of $\mathrm{Rb^+}$ ions. We show that the kinetic energy of the $\mathrm{Rb^+}$ fragment ions…

We unravel the existence and stability properties of one-dimensional droplets arising in genuine two-component particle imbalanced bosonic mixtures under the influence of a weak harmonic confinement. A plethora of miscible droplet phases is…

Quantum Gases · Physics 2025-02-04 Efstathios G. Charalampidis , Simeon I. Mistakidis

After irradiation of Fe-Cr alloys of low purity (model alloys of F-M steels), minor solute elements as P, Ni and Si have been shown to create solute clusters which significantly contribute to hardening and might be associated with small…

Materials Science · Physics 2022-08-25 P. M. Gueye , B. Gómez-Ferrer , C. Kaden , C. Pareige

Sequential ionization of fullerene cluster ions (C$_{60}$)$_{n}^{+}$ within multiply-charged helium nanodroplets leads to the intriguing phenomenon of forming and stabilizing doubly- and triply-charged fullerene oligomers. Surprisingly, we…

Atomic and Molecular Clusters · Physics 2023-12-11 Lisa Ganner , Stefan Bergmeister , Lucas Lorenz , Milan Ončák , Paul Scheier , Elisabeth Gruber

The dynamics following the photoexcitation of Na and Li atoms located on the surface of helium nanodroplets has been investigated in a joint experimental and theoretical study. Photoelectron spectroscopy has revealed that excitation of the…

Atomic and Molecular Clusters · Physics 2017-08-23 Alberto Hernando , Manuel Barranco , Martí Pi , Evgeniy Loginov , Marina Langlet , Marcel Drabbels

Alkali atoms do not stably embed in liquid helium-4 because the interatomic attractive potential is unable to overcome the short-range Pauli repulsion of the s electrons and the surface tension cost of the surrounding bubble. Similarly,…

Atomic and Molecular Clusters · Physics 2010-02-01 Casey Stark , Vitaly V. Kresin

A two-component quantum droplet is an attractive mixture of ultracold bosons stabilised against collapse by quantum fluctuations. Commonly, two-component quantum droplets are studied within a balanced mixture. However, the mixture can be…

Quantum Gases · Physics 2023-09-11 Thomas A. Flynn , Nick A. Keepfer , Nick G. Parker , Thomas P. Billam

Light clusters are included in the equation of state of nuclear matter within the relativistic mean field theory. The effect of the cluster-meson coupling constants on the dissolution density is discussed. Theoretical and experimental…

Nuclear Theory · Physics 2012-06-04 Márcio Ferreira , Constança Providência

Helium nanodroplets ("HNDs") are widely used for forming tailor-made clusters and molecular complexes in a cold, transparent, and weakly-interacting matrix. Characterization of embedded species by mass spectrometry is often complicated by…

Atomic and Molecular Clusters · Physics 2024-01-15 S. De , A. R. Abid , J. D. Asmussen , L. Ben Ltaief , K. Sishodia , A. Ulmer , H. B. Pedersen , S. R. Krishnan , M. Mudrich

The crystallization of complex, concentrated alloys can result in atomic-level short-range order, composition gradients, and phase separation. These features govern the properties of the resulting alloy. While nucleation and growth in…

Materials Science · Physics 2024-10-23 Saswat Mishra , Alejandro Strachan

Accurate computer simulations of the rotational dynamics of linear molecules solvated in He clusters indicate that the large-size (nano-droplet) regime is attained quickly for light rotors (HCN, CO) and slowly for heavy ones (OCS, N$_2$O,…

Other Condensed Matter · Physics 2009-11-11 S. Paolini , S. Fantoni , S. Moroni , S. Baroni

We investigate the dynamics of dilute systems composed of nucleons and light clusters within a linear response approach, taking into account the in-medium Mott effects on cluster appearance, through a density-dependent momentum cut-off. We…

Nuclear Theory · Physics 2026-05-08 Rui Wang , Stefano Burrello , Maria Colonna , Francesco Matera

We have studied complexes of gold atoms and imidazole (C$_3$N$_2$H$_4$, abbreviated Im) produced in helium nanodroplets. Following the ionization of the doped droplets we detect a broad range of different Au$_m$Im$_n^+$ complexes, however…

Metal-fullerene compounds are characterized by significant electron transfer to the fullerene cage, giving rise to an electric dipole moment. We use the method of electrostatic beam deflection to verify whether such reactions take place…

Atomic and Molecular Clusters · Physics 2022-04-26 John W. Niman , Benjamin S. Kamerin , Thomas H. Villers , Thomas M. Linker , Aiichiro Nakano , Vitaly V. Kresin