# Spatially resolved dynamic structure factor of finite systems from molecular dynamics simulations.

@article{Raitza2011SpatiallyRD, title={Spatially resolved dynamic structure factor of finite systems from molecular dynamics simulations.}, author={Thomas Raitza and Gerd R{\"o}pke and Heidi Reinholz and Igor V. Morozov}, journal={Physical review. E, Statistical, nonlinear, and soft matter physics}, year={2011}, volume={84 3 Pt 2}, pages={ 036406 } }

The dynamical response of metallic clusters up to 10(3) atoms is investigated using the restricted molecular dynamics simulations scheme. Exemplarily, a sodium like material is considered. Correlation functions are evaluated to investigate the spatial structure of collective electron excitations and the optical response of laser-excited clusters. In particular, the spectrum of bilocal correlation functions shows resonances representing different modes of collective excitations inside the nano…

## 12 Citations

Spatially resolved collective excitations of nano-plasmas via molecular dynamics simulations and fluid dynamics

- Physics
- 2012

Collective excitations in nano-plasmas are described by dynamical bi-local auto-correlation functions. These excitations, which are related to the plasmon excitations in bulk plasmas, arise in the…

Collective Excitations of Finite‐Temperature Nano Plasmas

- Chemistry, Physics
- 2012

Electron density fluctuations as well as current density correlations are considered for excited nano plasmas. Calculations are performed by classical MD simulations at high temperatures for…

Relaxation and Collective Excitations of Cluster Nano-Plasmas

- Physics
- 2017

Nano-plasmas produced, e.g. in clusters after short-pulse laser irradiation, can show collective excitations as derived from the time evolution of fluctuations in thermodynamic equilibrium. Molecular…

Reflecting Boundary Conditions for Classical and Quantum Molecular Dynamics Simulations of Nonideal Plasmas

- Physics
- 2016

The influence of boundary conditions for the classical and wave packet molecular dynamics (MD) simulations of nonideal electron‐ion plasma is studied. We start with the classical MD and perform a…

Spatially Resolved Electronic Correlations in Nanoclusters

- Chemistry
- 2013

Recent experimental developments in the creation and diagnostic probing of metallic nanoclusters has made it possible to explore their interaction with electromagnetic radiation, thus revealing…

High performance wave packet molecular dynamics with density functional exchange-correlation term for non-ideal plasma simulations

- Physics
- 2021

We report on development of the wave packet molecular dynamics (WPMD) with density functional theory (DFT) simulation technique that we proposed earlier for nonideal plasma and warm dense matter…

Electronic oscillations in ionized sodium nanoclusters

- Physics
- 2015

Irradiation of nanosized metallic clusters by femtosecond laser pulses of moderate intensities () leads to creation of the so-called electron–ion nanoplasma with size-dependent properties. Electron…

Size Dependence of Minimum Charge of Excited Nano‐Plasmas

- Chemistry
- 2013

The charge of ionized metal clusters is investigated at high temperatures. Molecular Dynamics (MD) simulations are applied to describe the particle motion. While the electrons are treated as separate…

Pressure fluctuations in nonideal nondegenerate plasma

- Physics
- 2014

Pressure fluctuations in equilibrium nonideal plasma are investigated by the method of classical molecular dynamics. Examples of plasma parameters at which the pressure-fluctuation distribution…

Inverse bremsstrahlung heating rate in atomic clusters irradiated by femtosecond laser pulses

- Physics
- 2012

In the interaction of atomic clusters with femtosecond laser pulses, nanoplasmas with high density and high temperature are created. The heating is mainly determined by inverse bremsstrahlung (IB)…

## References

SHOWING 1-10 OF 104 REFERENCES

DYNAMICAL SPATIALLY RESOLVED RESPONSE FUNCTION OF FINITE 1-D NANO PLASMAS

- Physics
- 2010

The dynamical response of one dimensional chains containing 55 till 309 atoms is investigated using a restricted molecular dynamics simulation scheme. The total momentum correlation function of an…

Molecular dynamics simulations of optical conductivity of dense plasmas.

- PhysicsPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2005

The optical conductivity sigma (omega) for dense Coulomb systems is investigated using molecular dynamics simulations on the basis of pseudopotentials to mimic quantum effects and results are presented showing a consistent description of these model plasmas in comparison to quantum statistical approaches and to experimental data.

Collision frequency of electrons in laser excited small clusters

- Physics
- 2009

Laser excited small metallic clusters are simulated using classical pseudo potential molecular dynamics simulations. Time-dependent distribution functions are obtained from the electron and ion…

CORRELATIONS, COLLISION FREQUENCY AND OPTICAL PROPERTIES IN LASER EXCITED CLUSTERS

- Physics
- 2007

Within linear response theory, the dielectric and optical properties of a charged particle system are related to equilibrium correlation functions. In particular, the dynamical conductivity and the…

Laser Excited Expanding Small Clusters: Single Time Distribution Functions

- Chemistry
- 2009

The time evolution of laser excited small clusters such as Na309 is investigated using a classical MD simulation code. Results for the electron phase space distribution are analyzed. We are…

A molecular dynamics description of clusters in strong laser fields

- Physics
- 2006

Abstract.We discuss from a theoretical perspective the energetic dynamics of
clusters after irradiation with intense laser pulses in the regime of
intensities larger than 1016 W/cm2. To that end, we…

OPTICAL AND TRANSPORT PROPERTIES IN DENSE PLASMAS COLLISION FREQUENCY FROM BULK TO CLUSTER

- Physics
- 2008

The dielectric function of dense plasmas is treated within a many-particle linear response theory beyond the RPA. In the long-wavelength limit, the dynamical collision frequency can be introduced…

Long-wavelength limit of the dynamical local-field factor and dynamical conductivity of a two-component plasma

- PhysicsPhysical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
- 2000

A systematic approach to the optical conductivity is given within a dielectric function formalism and the existence of the third moment sum rule can be shown analytically.

Dielectric and optical properties of dense plasmas

- Physics
- 2005

The interaction of matter with radiation concerns almost every area in physics. The exposure of matter to radiation may change its behavior. The focus of the present review are strongly correlated…