Browsing DFis-Artículos, capítulos, libros... by Title
Now showing items 92-111 of 135
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Partial Separability of the Schrödinger Equation Combined with a Jastrow Factor
(American Chemical Society, 2023)Describing the Coulomb interactions between electrons in atomic or molecular systems is an important step to help us obtain accurate results for the different observables in the system. One convenient approach is to separate ... -
Path Integral Monte Carlo Calculations of Calcium-Doped 4He Clusters
(Wiley, 2014)The energetics and structures of HeNCa clusters have been studied by means of path integral Monte Carlo calculations. Sizes ranging between N=10 and 40 helium atoms were considered at T=1, 1.5, and 2 K. Radial and angular ... -
Phase contrast imaging measurements and numerical simulations of turbulent density fluctuations in gas-fuelled ECRH discharges in Wendelstein 7-X
(Cambridge University Press, 2021)The fundamental nature of turbulent density fluctuations in standard Wendelstein 7-X (W7-X) stellarator discharges is investigated experimentally via phase contrast imaging (PCI) in combination with gyrokinetic simulations ... -
Photon to axion conversion during Big Bang Nucleosynthesis
(IOP Publishing, 2023)We investigate how the resonant conversion at a temperature T¯=25-65 keV of a fraction of the CMB photons into an axion-like majoron affects BBN. The scenario, that assumes the presence of a primordial magnetic field and ... -
Plasmas and acoustic waves to pattern the nanostructure and chemistry of thin films
(Elsevier, 2023-08-15)In this work, piezoelectric AWs and plasmas have been brought together during the growth of a thin film as a novel methodology of plasma-assisted thin film structuration. The ensuing effects have been investigated on a ... -
Polar di-halogen molecules solvated in bosonic helium clusters: The paradigm of ICl(X)
(American Physical Society, 2006)Energies and structures of 4HeN-ICl(X) complexes, N<=30, are determined within the framework of a recently developed Hartree-like approach [Phys. Rev. A 71, 033203 (2005)], in which the He atoms play the role of the ... -
Polarization Properties of Laser Solitons
(MDPI, 2017)The objective of this paper is to summarize the results obtained for the state of polarization in the emission of a vertical-cavity surface-emitting laser with frequency-selective feedback added. We start our research with ... -
La Politécnica de Belmez al Sur del Sur
(Universidad de Córdoba, Escuela Politécnica Superior de Belmez, 2009) -
Positive ion temperature effect on the plasma-wall transition
(AIP Publishing, 2018)This paper analyses the plasma-wall interaction of a plasma in contact with a conducting planar surface when the positive-ion temperature is not negligible compared with the electron one. The electric potential from the ... -
Potential energy surface and bound states of the (X4Σ)KRb-K complex
(Wiley, 2014)We present in this work a potential energy surface of the (X4R)KRb-K complex for which high level ab initio calculations have been carried out at the RCCSD(T) level of theory, using ECP10MDF/ECP28MDF effective core ... -
Producción de nanoestructuras de carbono usando microplasmas a presión atmosférica
(Universidad de Córdoba, 2015) -
Quantitative comparison of impurity transport in turbulence reduced and enhanced scenarios at Wendelstein 7-X
(IOP Publishing, 2023)We assess the turbulent particle transport being responsible for the limitation of the confinement and, thus, the overall performance of the neoclassically optimized stellarator Wendelstein 7-X. The radial particle transport ... -
Quantum confinement of the covalent bond beyond the Born-Oppenheimer approximation
(American Chemical Society, 2013)Dirichlet boundary conditions with different symmetries, spherical and cylindrical impenetrable surfaces, are imposed on the covalent electron pair of a molecular bond. Accurate results for different observable like energy ... -
Quantum defect asymptotics at the critical charge: A study of the integrality conjecture
(Elsevier, 2018)A single (n, ℓ) electron outside an (N −1)-electron atomic core is bound as long as Z > Zc = N − 1. A conjecture is examined, according to which the quantum defect of the outermost electron satisfies limZ!Zc δn,ℓ(Z) = Nℓ, ... -
Quantum Features of a Barely Bound Molecular Dopant: Cs2(3Σu) in Bosonic Helium Droplets of Variable Size
(American Chemical Society, 2011)We present in this work the study of small 4HeN-Cs2(3Σu) aggregates (2 <= N <= 30) through combined variational, diffusion Monte Carlo (DMC), and path integral Monte Carlo (PIMC) calculations. The full surface is modeled ... -
Quantum rotation of Rb2(3Σ+u) attached to HeN droplets: a path-integral Monte Carlo study
(Springer, 2013)Doped HeNRb2(3Σ+u) systems, with N = 20 and 40, have been studied by means of a path integral Monte Carlo method at two different temperatures T = 1 K and 2 K. The impurity, Rb2, is assumed as a rigid rotor and results ... -
Quasi-symmetry and the nature of radial turbulent transport in quasi-poloidal stellarators
(AIP Publishing, 2016)Quasi-symmetric configurations have a better neoclassical confinement compared to that of standard stellarators. The reduction of the neoclassical viscosity along the direction of quasi-symmetry should facilitate the ... -
Radial-to-orbital motion transition in cylindrical Langmuir probes studied with particle-in-cell simulations
(2016)A particle-in-cell (PIC) simulation of the plasma sheath around a cylindrical Langmuir probe has been developed to evaluate the ion current collected by the probe. The simulation includes the positive ion thermal motion ... -
Role of Boson-Fermion Statistics on the Raman Spectra of Br2 X in Helium Clusters
(American Physical Society, 2004)The role played by the bosonic or fermionic character of He atoms surrounding a Br2 X molecule is analyzed through vibrotational Raman spectra simulations. Quantum chemistry-type calculations reveal the spin multiplicity ... -
El siglo XIX: la Teoría Electromagnética
(2006-09-26)