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pro vyhledávání: '"Palade, D. I."'
Autor:
Palade, D. I.
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 datasets that are constructed with the aid of test-particle numerical simu
Externí odkaz:
http://arxiv.org/abs/2307.06062
The diffusive transport in two-dimensional incompressible turbulent fields is investigated with the aid of high-quality direct numerical simulations. Three classes of turbulence spectra that are able to capture both short and long-range time-space co
Externí odkaz:
http://arxiv.org/abs/2303.13457
Autor:
Palade, D. I., Pomârjanschi, L. M.
We propose an analytical approximation for the modified Bessel function of the second kind $K_\nu$. The approximation is derived from an exponential ansatz imposing global constrains. It yields local and global errors of less than one percent and a s
Externí odkaz:
http://arxiv.org/abs/2303.13400
Autor:
Palade, D. I., Pomârjanschi, L.
We analyze how the turbulent transport of $\mathbf{E}\times \mathbf{B}$ type in magnetically confined plasmas is affected by intermittent features of turbulence. The latter are captured by the non-Gaussian distribution $P(\phi)$ of the turbulent elec
Externí odkaz:
http://arxiv.org/abs/2109.07374
Autor:
Palade, D. I.
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. The direct numerical simulation method is used to compute, via the t
Externí odkaz:
http://arxiv.org/abs/2011.02302
Autor:
Palade, D. I., Vlad, M.
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 intended for Direct Numerical Simulations of the V-Langevin equations. The la
Externí odkaz:
http://arxiv.org/abs/2006.11106
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 dependence of nuclear symmetry energy on density. A new picture of PDR is unvei
Externí odkaz:
http://arxiv.org/abs/2006.00638
Akademický článek
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Autor:
Palade, D. I.
Publikováno v:
Phys. Rev. B 98, 245401 (2018)
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 microscopic approaches, both for homogeneous equilibrium and dynamical regi
Externí odkaz:
http://arxiv.org/abs/1808.08876
Autor:
Palade, D. I.
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 electrostatic limit it is found that the equilibrium density profile is a smo
Externí odkaz:
http://arxiv.org/abs/1604.05293