10 citations · 36 across the 18 of their papers we have counts for
19 papers
Lagrangian features of turbulent transport in tokamak plasmas
D. I. Palade
This study investigates the Lagrangian properties of ion turbulent transport driven by drift-type turbulence in tokamak plasmas. Despite the compressible and inhomogeneous nature o…
T3ST code: Turbulent Transport in Tokamaks via Stochastic Trajectories
D. I. Palade, L. M. Pomarjanschi
We introduce the Turbulent Transport in Tokamaks via Stochastic Trajectories (T3ST) code, designed to address the problem of turbulent transport using a statistical approach comple…
Predicting the turbulent transport of cosmic rays via neural networks
D. I. Palade
A fast artificial neural network is developed for the prediction of cosmic ray transport in turbulent astrophysical magnetic fields. The setup is trained and tested on bespoke data…
Hidden Lagrangian coherence and memory effects in the statistics of Hamiltonian motions
Madalina Vlad, Dragos Iustin Palade, Florin Spineanu
This paper is focused on the coherent effects that appear in tracer statistics in two-dimensional incompressible turbulence in the presence of an average velocity. We show that thi…
Scaling laws of two-dimensional incompressible turbulent transport
D. I. Palade, L. M. Pomârjanschi, M. Ghită
The diffusive transport in two-dimensional incompressible turbulent fields is investigated with the aid of high-quality direct numerical simulations. Three classes of turbulence sp…
Approximations of the modified Bessel functions of the second kind . Applications in random field generation
D. I. Palade, L. M. Pomârjanschi
We propose an analytical approximation for the modified Bessel function of the second kind . The approximation is derived from an exponential ansatz imposing global constrains…
Effects of intermittency on turbulent transport in magnetized plasmas
D. I. Palade, L. Pomârjanschi
We analyze how the turbulent transport of type in magnetically confined plasmas is affected by intermittent features of turbulence. The latter are cap…
Turbulent transport of fast ions in tokamak plasmas in the presence of resonant magnetic perturbations
D. I. Palade
The effects of resonant magnetic perturbations on the turbulent transport of fast ions in tokamak devices are investigated using a theoretical transport model of test-particle type…
Effects of the parallel acceleration on heavy impurity transport in turbulent tokamak plasmas
Madalina Vlad, Dragos Iustin Palade, Florin Spineanu
A process specific to the dynamics of the heavy impurities in turbulent tokamak plasmas is found and analysed. We show that the parallel stochastic acceleration is strongly coupled…
Fast generation of Gaussian random fields for direct numerical simulations of stochastic transport
D. I. Palade, M. Vlad
We propose a novel discrete method of constructing Gaussian Random Fields (GRF) based on a combination of modified spectral representations, Fourier and Blob. The method is intende…
The isoscalar features of Pygmy Dipole Resonance: a subtle game of symmetry energy
V. Baran, T. Isdraila, M. Colonna +2
The vibrational structure of the Pygmy Dipole Resonance (PDR) is investigated within a quantum many-body treatment with extended separable interactions able to encode the dependenc…
Nonlocal Orbital-Free kinetic pressure tensors for the Fermi gas
D. I. Palade
A novel nonlocal density functional for the kinetic pressure tensor of a Fermi gas is derived. The functional is designed to reconcile the Quantum Hydrodynamic Model with the micro…
Multiple surface plasmons on an unbounded quantum plasma half-space
D. I. Palade
The propagation of surface plasmons on a quantum plasma half-space in the absence of any external confinement is investigated. By means of Quantum Hydrodynamic Model in the electro…
N-Block Separable Random Phase Approximation: Application to metal clusters and C60 fullerene
D. I. Palade, V. Baran
Starting from the Random Phase Approximation (RPA), we generalize the schematic model of separable interaction defning subspaces of ph excitations with different coupling constants…
Theoretical tools for simulations of cluster dynamics in strong laser pulses
Dragos I. Palade
The main theoretical tools used in the physics of cluster-laser interaction are discussed starting from the basic principles of Quantum Mechanics and ending with purely classical m…
On the collectivity of Pygmy Dipole Resonance within schematic TDA and RPA models
V. Baran, D. I. Palade, M. Colonna +3
Within schematic models based on the Tamm-Dancoff Approximation and the Random-Phase Approximation with separable interactions, we investigate the physical conditions which determi…
Monte Carlo tests of Orbital-Free Density Functional Theory
D. I. Palade
The relationship between the exact kinetic energy density in a quantum system in the frame of Density Functional Theory and the semiclassical functional expression for the same qua…
General static polarizability in spherical neutral metal clusters and fullerenes within Thomas-Fermi theory
D. I. Palade, V. Baran
We study the static linear response in spherical Thomas-Fermi systems deriving a simple diferen- tial equation for general multipolar moments and associated polarizabilities. We te…
Regimes of self-organized criticality in the atmospheric convection
F. Spineanu, M. Vlad, D. Palade
Large scale organization in ensembles of events of atmospheric convection can be generated by the combined effect of forcing and of the interaction between the raising plumes and t…