180 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- CEA DAM Île-de-FranceFR50 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR50 papers
- Université Paris-SaclayFR50 papers
- CEA Paris-SaclayFR40 papers
- Centre National de la Recherche ScientifiqueFR19 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR9 papers
- Laboratoire de Physique des 2 Infinis Irène Joliot-CurieFR8 papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR7 papers
- Lawrence Livermore National LaboratoryUS7 papers
- KU LeuvenBE5 papers
- CEA Paris-Saclay - Etablissement de SaclayFR4 papers
- CentraleSupélecFR4 papers
52 papers
Opacity predictions in plasmas under stellar conditions using deep learning
Djamel Benredjem, Jean-Christophe Pain
The aim of this work is to predict the opacity of plasmas under stellar conditions. We focus on iron and nickel, as these elements have been extensively investigated both theoretic…
Inferring partial crystalline order in liquids from electrical resistivity
Nadine Wetta, Jean-Christophe Pain
This work investigates how locally persistent crystal-like ordering in liquids influences the Debye-Waller factor. We have developed a theoretical framework based on liquid-phonon…
Widefield NV Magnetic Field Reconstruction for Probing the Meissner Effect and Critical Current Density under Pressure
Kin On Ho, Cassandra Dailledouze, Martin Schmidt +3
The spatial distribution of a magnetic field can be determined with micrometer resolution using widefield nitrogen vacancy (NV) center magnetic imaging. Nevertheless, reconstructin…
Observation of hexagonal close-packed water ice at conditions in ice giant planetary interiors
Alexis Forestier, Gunnar Weck, Sandra Ninet +4
Using synchrotron x-ray diffraction in laser-heated diamond anvil cells, we report the observation of an hexagonal close-packed (hcp) phase of water ice at high pressure and temper…
Electrical conductivities and low frequency opacities in the warm dense matter regime
Mikael Tacu, Jean-Christophe Pain, Matthias Pautard +1
In this article, we examine different approaches for calculating low frequency opacities in the warm dense matter regime. The relevance of the average-atom approximation and of dif…
Imaging the Meissner Effect and Flux Trapping of Superconductors under High Pressure using N-V Centers
Cassandra Dailledouze, Antoine Hilberer, Martin Schmidt +7
Pressure is a key parameter for tuning or revealing superconductivity in materials and compounds. Many measurements of superconducting phase transition temperatures have been condu…
Mean-field approximation on steroids: exact description of the deuteron
B. Bally, A. Scalesi, V. Somà +2
The present article demonstrates that the deuteron, i.e. the lightest bound nuclear system made of a single proton and a single neutron, can be accurately described within a mean-f…
Dimensionality reduction through tensor factorization : application to \textit{ab initio} nuclear physics calculations
Mikael Frosini, Thomas Duguet, Pierre Tamagno +1
The construction of predictive models of atomic nuclei from first principles is a challenging (yet necessary) task towards the systematic generation of theoretical predictions (and…
Recovering particle velocity and size distributions in ejecta with Photon Doppler Velocimetry
J. A. Don Jayamanne, R. Outerovitch, F. Ballanger +11
When a solid metal is struck, its free surface can eject fast and fine particles. Despite the many diagnostics that have been implemented to measure the mass, size, velocity or tem…
Benford's law in atomic spectra and opacity databases
Jean-Christophe Pain, Yuri Ralchenko
The intriguing law of anomalous numbers, also named Benford's law, states that the significant digits of data follow a logarithmic distribution favoring the smallest values. In thi…
Facilities and practices for linear response Hubbard parameters U and J in Abinit
Lórien MacEnulty, Matteo Giantomassi, Bernard Amadon +2
Members of the DFT+U family of functionals are increasingly prevalent methods of addressing errors intrinsic to (semi-) local exchange-correlation functionals at minimum computatio…
Multiconfigurational time-dependent density functional theory for atomic nuclei: Technical and numerical aspects
Petar Marević, David Regnier, Denis Lacroix
The nuclear time-dependent density functional theory (TDDFT) is a tool of choice for describing various dynamical phenomena in atomic nuclei. In a recent study, we reported an exte…
Nonresonant scattering of energetic electrons by electromagnetic ion cyclotron waves: spacecraft observations and theoretical framework
Xin An, Anton Artemyev, Vassilis Angelopoulos +4
Electromagnetic ion cyclotron (EMIC) waves lead to rapid scattering of relativistic electrons in Earth's radiation belts, due to their large amplitudes relative to other waves that…
Strengths and limitations of the adiabatic exact-exchange kernel for total energy calculations
Maria Hellgren, Lucas Baguet
We investigate the adiabatic approximation to the exact-exchange kernel for calculating correlation energies within the adiabatic-connection fluctuation-dissipation framework of ti…
Quantum fluctuations induce collective multiphonons in finite Fermi liquids
Petar Marević, David Regnier, Denis Lacroix
We show that collective multiphonon states in atomic nuclei emerge at high excitation energies when quantum fluctuations in the collective space are included beyond the independent…
Checking the reliability of opacity databases
Jean-Christophe Pain, Patricia Croset
Mathematical inequalities, combined with atomic-physics sum rules, enable one to derive lower and upper bounds for the Rosseland and/or Planck mean opacities. The resulting constra…
Schroedinger equation on a generic radial grid
Christopher Bowen, Jean-Christophe Pain
In this note, we discuss the choice of radial grid in the numerical resolution of the Schroedinger equation. We detail the transformation of the equation resulting from a change of…
On the effect of electronic stopping in molecular dynamics simulations of collision cascades in Gallium Arsenide
Johannes L. Teunissen, Thomas Jarrin, Nicolas Richard +6
Understanding the generation and evolution of defects induced in matter by ion irradiation is of fundamental importance to estimate the degradation of functional properties of mate…
Temporal Scales of Electron Precipitation Driven by Whistler-Mode Waves
Xiao-Jia Zhang, Vassilis Angelopoulos, Anton Artemyev +4
Electron resonant scattering by whistler-mode waves is one of the most important mechanisms responsible for electron precipitation to the Earth's atmosphere. We investigate tempora…
A variational atomic model of plasma accounting for ion radial correlations and electronic structure of ions (VAMPIRES)
T. Blenski, R. Piron
We propose a model of ion-electron plasma (or nucleus-electron plasma) that accounts for the electronic structure around nuclei (i.e. ion structure) as well as for ion-ion correlat…
A fast approximation to supershell partition functions
Bran G. Wilson, Jean-Christophe Pain
A formula for supershell partition functions, which play a major role in the Super Transition Array approach to radiative-opacity calculations, is derived as a functional of the di…
Covariant energy density functionals with and without tensor couplings at the Hartree-Bogoliubov level
F. Mercier, J. -P. Ebran, E. Khan
Background: The study of additional terms in functionals is relevant to better describe nuclear structure phenomenology. Among these terms, the tensor one is known to impact nuclea…
Addressing energy density functionals in the language of path-integrals II: Comparative study of functional renormalization group techniques applied to the (0+0)-D -symmetric -theory
Kilian Fraboulet, Jean-Paul Ebran
The present paper is the second of a series of publications that aim at investigating relevant directions to turn the nuclear energy density functional (EDF) method as an effective…
Roadmap on Electronic Structure Codes in the Exascale Era
Vikram Gavini, Stefano Baroni, Volker Blum +38
Electronic structure calculations have been instrumental in providing many important insights into a range of physical and chemical properties of various molecular and solid-state…