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A theoretical study of the K-shell ionization of hydrogen-like ions, colliding with bare nuclei, is performed within the framework of the time-dependent Dirac equation. Special emphasis is placed on the ionization probability that is…

Atomic Physics · Physics 2023-04-20 O. Novak , R. Kholodov , A. Surzhykov , A. N. Artemyev , Th. Stöhlker

Absolute cross sections for electron-impact single ionisation (EISI) of multiply charged tungsten ions (W$^{q+}$) with charge states in the range $ 11 \leq q \leq 18$ in the electron-ion collision energy ranges from below the respective…

Atomic Physics · Physics 2020-01-08 D. Schury , A. Borovik, , B. Ebinger , F. Jin , K. Spruck , A. Müller , S. Schippers

We report measurements of electron impact ionization (EII) for Fe^13+, Fe^16+, and Fe^17+ over collision energies from below threshold to above 3000 eV. The ions were recirculated using an ion storage ring. Data were collected after a…

Electron Capture (EC) cross-section from K, L and M shells of the target atoms to the vacant K, L and M shells of the projectile ions have been calculated by deriving the accurate momentum transfer to the captured electrons for different…

Atomic Physics · Physics 2024-07-03 Sumana Ghosh , Debasis Mitra , Soumya Chatterjee

We present a comprehensive study of electron collisions with calcium atoms by using the convergent \emph{B}-spline \emph{R}-matrix method. Elastic, excitation, and ionization cross sections were obtained for all transitions between the…

Atomic Physics · Physics 2019-01-16 Oleg Zatsarinny , Henry Parker , Klaus Bartschat

The universal scaling behavior for the electron-impact excitation cross sections of the $2s$ states of hydrogen- and helium-like multicharged ions is deduced. The study is performed within the framework of non-relativistic perturbation…

Atomic Physics · Physics 2009-11-13 A. V. Nefiodov , G. Plunien

A complete set of cross sections is reported for the ionization of water molecules by neutral atomic hydrogen impact at velocities of the order of the Bragg peak. The measured relative cross sections are normalized by comparison with proton…

Atomic and Molecular Clusters · Physics 2016-08-16 F. Gobet , S. Eden , B. Coupier , J. Tabet , B. Farizon , M. Farizon , M. J. Gaillard , S. Ouaskit , M. Carré , T. D. Mark

Theoretical expressions for ionization cross sections by electron impact based on the binary encounter Bethe (BEB) model, valid from ionization threshold up to relativistic energies, are proposed. The new modified BEB (MBEB) and its…

Atomic Physics · Physics 2013-06-13 M. Guerra , F. Parente , P. Indelicato , J. P. Santos

The E12-14-012 experiment performed at Jefferson Lab Hall A has collected inclusive electron-scattering data for different targets at the kinematics corresponding to beam energy 2.222 GeV and scattering angle 15.54 deg. Here we present a…

We present a model of non-ionizing scattering of electrons on atomic ensemble in matter, applicable in a wide electron energy range from ~eV up to relativistic ones. The approach based on the dynamic-structure factor formalism considers…

Other Condensed Matter · Physics 2025-04-17 N. Medvedev , D. I. Zainutdinov , A. E. Volkov

For neutrinos of O(10keV) energies, their oscillation lengths are less than a few hundred meters, thereby suggesting the fascinating idea of oscillation experiments of small geometrical size. To help evaluating this idea we calculate the…

High Energy Physics - Phenomenology · Physics 2009-11-10 G. J. Gounaris , E. A. Paschos , P. I. Porfyriadis

Absolute {\it K}-shell photoionization cross sections for atomic nitrogen have been obtained from both experiment and state-of-the-art theoretical techniques. Due to the difficulty of creating a target of neutral atomic nitrogen, no…

Earth and Planetary Astrophysics · Physics 2015-06-04 M. M. Sant'Anna , A. S. Schlachter , G. Öhrwall , W. C. Stolte , D. W. Lindle , B. M. McLaughlin

Partial ionization cross section experiments have been carried out recently at the University of Innsbruck for three types of hydrocarbons, i.e. acetylene, ethylene and propene. Cross section data fits are generated and compared to the…

Plasma Physics · Physics 2011-11-24 Stefan E. Huber , Josef Seebacher , Alexander Kendl , Detlev Reiter

The scattering of electrons on carbon, calcium, and argon targets are analyzed using an approach that incorporates the contributions to the electromagnetic response functions from the quasielastic (QE), inelastic processes, and two-particle…

High Energy Physics - Phenomenology · Physics 2020-09-22 A. V. Butkevich , S. V. Luchuk

In this work, we investigate the ionization of silicon by electron impacts in hot plasmas. Our calculations of the cross sections and rates rely on the Coulomb-Born-Exchange, Binary-Encounter-Dipole and Distorted-Wave methods implemented in…

Atomic Physics · Physics 2024-12-10 Jean-Christophe Pain , Djamel Benredjem

We report ionization cross section measurements for electron impact single ionization (EISI) of Fe^11+$ forming Fe^12+ and electron impact double ionization (EIDI) of Fe^11+ forming Fe^13+. The measurements cover the center-of-mass energy…

Instrumentation and Methods for Astrophysics · Physics 2015-03-17 M. Hahn , D. Bernhardt , M. Grieser , C. Krantz , M. Lestinsky , A. Mueller , O. Novotny , R. Repnow , S. Schippers , A. Wolf , D. W. Savin

We have compiled a set of electron-impact multiple ionization (EIMI) cross sections for astrophysically relevant ions. EIMI can have a significant effect on the ionization balance of non-equilibrium plasmas. For example, it can be important…

Instrumentation and Methods for Astrophysics · Physics 2017-12-06 Michael Hahn , Alfred Mueller , Daniel Wolf Savin

We theoretically investigate the single and double ionization of the He atom by antiproton impact for projectile energies ranging from $3$~keV up to $1000$~keV. We obtain accurate total cross sections by directly solving the fully…

Atomic Physics · Physics 2015-03-06 S. Borbély , J. Feist , S. Nagele , K. Tőkési , L. Nagy , J. Burgdörfer

We present a fully {\it ab initio}, non-perturbative, time-dependent approach to describe single and double ionization of helium by proton and antiproton impact. A flexible and accurate finite-element discrete-variable-representation is…

Atomic Physics · Physics 2016-11-17 Xiaoxu Guan , Klaus Bartschat

We present total cross sections for single and double ionization of helium by antiproton impact over a wide range of impact energies from 10 keV/amu to 1 MeV/amu. A non-perturbative time-dependent close-coupling method (TDCC) is applied to…

Atomic Physics · Physics 2008-11-26 M. Foster , J. Colgan , M. S. Pindzola