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We provide cross sections and Maxwell rate coefficients for reactive collisions of slow electrons with BeH$^+$ ions on all the eighteen vibrational levels ($X{^{1}\Sigma^{+}},v_{i}^{+}=0,1,2,\dots,17$) using a Multichannel Quantum Defect…

The influence of defect dipoles on the electrocaloric effect (ECE) in acceptor doped BaTiO$_3$ is studied by means of lattice-based Monte-Carlo simulations. A Ginzburg-Landau type effective Hamiltonian is used. Oxygen vacancy-acceptor…

Computational Physics · Physics 2016-10-05 Yang-Bin Ma , Anna Grünebohm , Kai-Christian Meyer , Karsten Albe , Bai-Xiang Xu

Detailed comparisons are reported between laboratory observations of electron-scale dissipation layers near a reconnecting X-line and direct two-dimensional full-particle simulations. Many experimental features of the electron layers, such…

Instrumentation and Methods for Astrophysics · Physics 2015-05-14 H. Ji , Y. Ren , M. Yamada , S. Dorfman , W. Daughton , S. P. Gerhardt

We present a study of dissociative electron attachment and vibrational excitation processes in electron collisions with the CF$_3$Cl molecule. The calculations are based on the two-dimensional nuclear dynamics including the C-Cl symmetric…

Chemical Physics · Physics 2011-12-09 Michal Tarana , Karel Houfek , Jiří Horáček , Ilya I. Fabrikant

We present experiments demonstrating trajectory-dependent electronic excitations at low ion velocities, where ions are expected to primarily interact with delocalized valence electrons. The energy loss of H$^+$, H$_2 ^+$, He$^+$, B$^+$,…

Materials Science · Physics 2020-12-03 Svenja Lohmann , Radek Holeňák , Daniel Primetzhofer

We investigate the impact of intercalating a xenon layer between a thin condensed CD4 film of two monolayers (ML) and a platinum surface on the dissociative electron attachment (DEA). The observed desorption results are compared with…

Materials Science · Physics 2025-04-16 Norhan Omar , Pierre Cloutier , Christophe Ramseyer , Léon Sanche , Michel Fromm

Positive results of dark matter searches in experiments DAMA/NaI and DAMA/LIBRA taken together with negative results of other groups can imply nontrivial particle physics solutions for cosmological dark matter. Stable particles with charge…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-01 Maxim Yu. Khlopov , Andrey G. Mayorov , Evgeniy Yu. Soldatov

We have developed a reduced-cost non-Dyson third-order algebraic diagrammatic construction theory for the electron-attachment problem based on state-specific frozen natural orbitals. Density fitting and truncated natural auxiliary functions…

Chemical Physics · Physics 2026-03-13 Tamoghna Mukhopadhyay , Kamal Majee , Achintya Kumar Dutta

The first theoretical investigation on the inner-shell single-photodetachment from the Si- negative ion is presented. The partial and total cross sections, the photoelectron phaseshifts, and the parameters of angular anisotropy are…

Atomic Physics · Physics 2016-05-25 Galina Schrange-Kashenock

Succeeding our previous finding about coherent interference of the resonant states of CO^- formed by the low-energy electron attachment [Phys. Rev. A 88, 012708 (2013)], here we provide more evidences of the coherent interference, in…

Atomic and Molecular Clusters · Physics 2015-09-02 Xu-Dong Wang , Chuan-Jin Xuan , Yi Luo , Shan Xi Tian

New Early Dark Energy (NEDE) is a component of vacuum energy at the electron volt scale, which decays in a first-order phase transition shortly before recombination [arXiv:1910.10739]. The NEDE component has the potential to resolve the…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-23 Florian Niedermann , Martin S. Sloth

This paper reports results from an experimental investigation of the dissociative recombination (DR) of the helium dimer ions at the heavy-ion Test Storage Ring (TSR) in Heidelberg, observing neutral products from electron-ion collisions in…

We derive a Debye-H\"uckel-like model of the electric ion-ion interaction for non-constant dielectric susceptibility, which does not depend on any kind of charging process due to its foundation in the general framework of non-equilibrium…

Chemical Physics · Physics 2025-02-24 Wolfgang Dreyer , Rüdiger Müller

Origin of aggregation-induced enhanced emission (AIEE) is investigated considering cyano-substituted 1,2-bis(pyridylphenyl)ethene (CNPPE) as an example. On the basis of ONIOM calculations using the time-dependent density functional theory…

Materials Science · Physics 2020-04-14 Wataru Ota , Ken Takahashi , Kenji Higashiguchi , Kenji Matsuda , Tohru Sato

Here we investigate ground and metastable negative ion formation in low-energy electron collisions with the actinide atoms Th, Pa, U, Np and Pu through the elastic total cross sections (TCSs) calculations. For these atoms, the presence of…

Atomic Physics · Physics 2018-11-09 Z. Felfli , A. Z. Msezane

Closed analytical formulas are derived for the differential and total cross sections of the non-relativistic photoelectric effect in the three main classes of few-electron atomic systems: (1) neutral atoms and positively charged atomic ions…

Atomic Physics · Physics 2022-09-28 Alexei M. Frolov

Differential cross sections for the electro-disintegration process $e + {^4He} \longrightarrow {^3H}+ p + e'$ are calculated, using a model in which the final state interaction is included by means of a nucleon-nucleus (3+1) potential…

Nuclear Theory · Physics 2009-10-31 M Braun , L L Howell , S A Sofianos , W Sandhas

We present the theory of radiative association of atoms and molecules, and we apply it to the (H$_2$-H$^-$) van der Waals complex. We discuss the possibility for the H$_3^-$ ion to be formed in the interstellar medium in an environment with…

Atomic Physics · Physics 2009-10-14 V. Kokoouline , M. Ayouz , R. Guerout , M. Raoult , J. Robert , O. Dulieu

The mutual neutralization of H^+ and H^- ions at low collision energies is studied by means of a molecular close-coupling approach. All degrees of freedom are treated at the full quantum level taking into account also the identity of the…

Chemical Physics · Physics 2009-02-12 Michael Stenrup , Åsa Larson , Nils Elander

The formation of anionic species in the interstellar medium from interaction of linear molecules containing carbon, nitrogen and hydrogen as atomic components (polyynes) with free electrons in the environment is modelled via a quantum…

Astrophysics of Galaxies · Physics 2015-06-05 F. Carelli , T. Grassi , F. Sebastianelli , F. A. Gianturco
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