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We use an independent electron model with semi-classical approximation to electron dynamics to investigate differential cross sections for electron emission in fast collisions of protons with ammonia molecules. An effective potential model…

原子物理 · 物理学 2023-09-29 Alba Jorge , Marko Horbatsch , Tom Kirchner

This paper presents an improved version of the previously proposed self-consistent drift-diffusion-reaction model correcting for non-physical behavior at longer time scales. To this end a novel boundary condition is employed that takes into…

材料科学 · 物理学 2020-06-19 Behrouz Raftari , Neil Budko , Kees Vuik

Using a helium ion hitting various metal surfaces as a model system, we describe a general quantum-kinetic approach for calculating ion-induced secondary electron emission spectra at impact energies where the emission is driven by the…

等离子体物理 · 物理学 2018-09-05 M. Pamperin , F. X. Bronold , H. Fehske

The inclusive density of charged secondaries produced in high energy heavy ion collisions are calculated in the framework of multiple scattering theory and quark-gluon string model. The obtained results are in agreement with the data only…

高能物理 - 唯象学 · 物理学 2007-05-23 J. Dias de Deus , Yu. M. Shabelski , R. Ugoccioni

Motivated by the recent experimental evidence of commensurate surface CDW in Pb/Ge(111) and Sn/Ge(111) $\sqrt{3}$-adlayer structures, as well as by the insulating states found on K/Si(111):B and SiC(0001), we have investigated the role of…

强关联电子 · 物理学 2009-10-31 G. Santoro , S. Sorella , F. Becca , S. Scandolo , E. Tosatti

Whether or not specific ion effects determine the charge storage properties of aqueous graphene and graphite-based supercapacitors remains a highly debated topic. In this work we present a multiscale quantum mechanics classical molecular…

材料科学 · 物理学 2022-11-10 Joshua D. Elliott , Mara Chiricotto , Alessandro Troisi , Paola Carbone

We perform a systematic study of capture excitation functions by using an empirical coupled-channel model. In this model, a barrier distribution is used to take effectively into account the effects of couplings between the relative motion…

核理论 · 物理学 2017-01-31 Bing Wang , Kai Wen , Wei-Juan Zhao , En-Guang Zhao , Shan-Gui Zhou

We study the interaction between two neutral plane-parallel dielectric bodies in the presence of a highly asymmetric ionic fluid, containing multivalent as well as monovalent (salt) ions. Image charge interactions, due to dielectric…

软凝聚态物质 · 物理学 2015-06-11 Matej Kanduc , Ali Naji , Jan Forsman , Rudolf Podgornik

Confronting grand canonical titration Monte Carlo simulations (MC) with recently published titration and charge reversal (CR) experiments on silica surfaces by Dove et al. and van der Heyden it et al, we show that ion-ion correlations…

软凝聚态物质 · 物理学 2008-12-02 Christophe Labbez , Bo Jonsson , Michal Skarba , Michal Borkovec

The study of the electrical double layer lies at the heart of colloidal and interfacial science. The standard mean-field Poisson-Boltzmann (PB) theory is incapable of modeling many phenomena originated from ion correlation. An important…

软凝聚态物质 · 物理学 2022-09-26 Nikhil R. Agrawal , Rui Wang

We analyze how bound-state excitation, electron exchange and the residual binding potential influence above-threshold ionization (ATI) in Helium prepared in an excited $p$ state, oriented parallel and perpendicular to a linearly polarized…

A semi-classical model describing the charge transfer collisions of $C_{60}$ fullerene with different slow ions has been developed to explain available experimental data. This data reveals multiple Breit-Wigner like peaks in the cross…

We study the ionic distribution near a charged surface. A new method for performing Monte Carlo simulations in this geometry is discussed. A theory is then presented that allows us to accurately reproduce the density profiles obtained in…

化学物理 · 物理学 2012-11-09 Alexandre P. dos Santos , Yan Levin

We present electron collision strengths and their thermally averaged values for the forbidden lines of the astronomically abundant doubly-ionized oxygen ion, O^{2+}, in an intermediate coupling scheme using the Breit-Pauli relativistic…

原子物理 · 物理学 2014-05-30 P. J. Storey , Taha Sochi , N. R. Badnell

A multiband CuO Hubbard model is studied which incorporates long-range (LR) repulsive Coulomb interactions. In the atomic limit, it is shown that a charge-transfer from copper to oxygen ions occurs as the strength of the LR interaction is…

凝聚态物理 · 物理学 2009-10-22 Jose Riera , Elbio Dagotto

The onset of thermalization in heavy ion collisions in the weak coupling framework can be viewed as a transition from the initial state Color Glass Condensate dynamics, characterized by the energy density scaling like $\epsilon \sim 1/\tau$…

高能物理 - 唯象学 · 物理学 2010-11-30 Yuri V. Kovchegov

Radiation friction can have a substantial impact on electron dynamics in a transparent target exposed to a strong laser pulse. In particular, by modifying quiver electron motion, it can strongly enhance the longitudinal charge separation…

等离子体物理 · 物理学 2021-05-17 Evgeny Gelfer , Alexander Fedotov , Stefan Weber

We calculate angle-resolved above-threshold ionization spectra for diatomic molecules in linearly polarized laser fields, employing the strong-field approximation. The interference structure resulting from the individual contributions of…

原子物理 · 物理学 2009-11-13 H. Hetzheim , C. Figueira de Morisson Faria , W. Becker

We show that in asymmetric heavy-ion collisions, especially off-central Cu+Au collisions, a sizable strength of electric field directed from Au nucleus to Cu nucleus is generated in the overlapping region, because of the difference in the…

核理论 · 物理学 2014-12-09 Yuji Hirono , Masaru Hongo , Tetsufumi Hirano

We calculate the ion and composition distributions around colloid particles in an aqueous mixture, accounting for preferential adsorption, electrostatic interaction, selective solvation among ions and polar molecules, and…

软凝聚态物质 · 物理学 2011-11-04 Ryuichi Okamoto , Akira Onuki