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In this communication, we present the results of the triple differential cross-section (TDCS) for the (e,2e) process on H2O molecule for the plane wave and the twisted electron beam impact. The formalism is developed in the first Born…

化学物理 · 物理学 2022-06-15 Nikita Dhankhar , Rakesh Choubisa

A classical description of electron emission differential ionization cross sections for highly-charged high-velocity ions ($\sim$ 10 a.u.) impinging on water molecules is presented. We investigate the validity of the classical statistical…

原子物理 · 物理学 2020-01-22 Alba Jorge , Marko Horbatsch , Clara Illescas , Tom Kirchner

The development of intense high-energy radiation sources and the improvement of techniques for detecting charged fragments have made possible experiments on multiple ionization of a molecule with registration of the momentum and charge of…

Differential cross sections for electromagnetic dissociation in nucleus-nucleus collisions are calculated. The kinetic energy distribution is parameterized with a Boltzmann distribution and the angular distribution is assumed isotropic in…

核理论 · 物理学 2008-11-26 John W. Norbury , Anne Adamczyk

Electronic excitations and ionisations produced by electron impact are key processes in the radiation-induced damage mechanisms in materials of biological relevance, underlying important medical and technological applications, including…

化学物理 · 物理学 2021-08-04 Pablo de Vera , Isabel Abril , Rafael Garcia-Molina

We apply a recently introduced model for an independent-atom-like calculation of ion-impact electron transfer and ionization cross sections to proton collisions from water, neon, and carbon clusters. The model is based on a geometrical…

原子与分子团簇 · 物理学 2018-12-20 Hans Jürgen Lüdde , Marko Horbatsch , Tom Kirchner

We consider single ionization of lithium atom in collisions with $p$ and O$^{8+}$ projectiles. Doubly differential cross sections for ionization are calculated within a relativistic non-perturbative approach. Comparisons with the recent…

原子物理 · 物理学 2019-03-27 A. I. Bondarev , Y. S. Kozhedub , I. I. Tupitsyn , V. M. Shabaev , G. Plunien

Anion and cation emission following water dissociation was studied for 6.6-keV $^{16}$O$^{+}$ + H$_{2}$O collisions. Absolute cross sections for the emission of all positively and negatively charged fragments, differential in both energy…

The hydroxyl radical, OH, is an important component of many natural and technological plasmas but there is little available information on processes involving its collisions with low-energy electrons. Low-energy electron collisions with OH…

原子物理 · 物理学 2019-09-04 Kalyan Chakrabarti , Vincenzo Laporta , Jonathan Tennyson

Twisted electron-impact single ionization ((e,2e) process) of water molecule is theoretically studied in the presence of an external laser field. Calculations have been performed in the framework of the first Born approximation in coplanar…

原子与分子团簇 · 物理学 2025-05-27 Neha , Rakesh Choubisa

By considering three different Nucleon-Nucleon (NN) elastic differential cross sections: the Cugnon \emph{et al.} parameterized differential cross section [Nucl. Instrum. Methods Phys. Res., Sect. \textbf{B111}, 215 (1996)], and the…

核理论 · 物理学 2016-08-24 Yongjia Wang , Chenchen Guo , Qingfeng Li , Zhuxia Li , Jun Su , Hongfei Zhang

Water radiolysis by low-energy carbon projectiles is studied by first-principles molecular dynamics. Carbon projectiles of kinetic energies between 175 eV and 2.8 keV are shot across liquid water. Apart from translational, rotational and…

软凝聚态物质 · 物理学 2017-03-16 Jorge Kohanoff , Emilio Artacho

We study the process of single ionization of Li in collisions with H$^+$ and O$^{8+}$ projectile ions at 6 MeV and 1.5-MeV/amu impact energies, respectively. Using the frameworks of the independent-electron model and the impact parameter…

原子物理 · 物理学 2015-01-16 L. Gulyás , S. Egri , T. Kirchner

The influences of water molecules surrounding biological molecules during irradiation with heavy particles (atoms,ions) are currently a major subject in radiation science on a molecular level. In order to elucidate the underlying complex…

Differential cross sections of the Coulomb deexcitation in the collisions of excited muonic hydrogen with the hydrogen atom have been studied for the first time. In the framework of the fully quantum-mechanical close-coupling approach both…

核理论 · 物理学 2009-11-11 V. N. Pomerantsev , V. P. Popov

A new relativistic method based on the Dirac equation for calculating fully differential cross sections for ionization in ion-atom collisions is developed. The method is applied to ionization of the atomic hydrogen by antiproton impact, as…

原子物理 · 物理学 2017-06-07 A. I. Bondarev , Y. S. Kozhedub , I. I. Tupitsyn , V. M. Shabaev , G. Plunien

An overview of quantum-mechanical methods to generate cross-section data for electron collisions with atoms and molecules is presented. Particular emphasis is placed on the time-independent close-coupling approach, since it is particularly…

等离子体物理 · 物理学 2016-10-21 Klaus Bartschat , Jonathan Tennyson , Oleg Zatsarinny

A semiclassical impact parameter version of the continuum distorted wave-Eikonal initial state theory is developed to study the differential ionization of $Li$ atoms in collisions with $Li^{2+}$ ions. Both post and prior forms of the…

原子物理 · 物理学 2018-05-09 Omid Ghorbani , Ebrahim Ghanbari-Adivi , Marcelo Fabian Ciappina

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…

原子与分子团簇 · 物理学 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

The deexcitation of exotic hydrogen atoms in highly excited states in collisions with hydrogen molecules has been studied using the classical-trajectory Monte Carlo method. The Coulomb transitions with large change of principal quantum…

原子物理 · 物理学 2009-11-07 T. S. Jensen , V. E. Markushin
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