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The energy distributions of secondary electrons produced by energetic carbon ions (in the energy range used, e.g., in hadron therapy), incident on liquid water, are discussed. For low-energy ions, a new parameterization of the…

Biological Physics · Physics 2015-05-14 Emanuele Scifoni , Eugene Surdutovich , Andrey V. Solov'yov

Energetic ions lose their energy in tissue mainly by ionising its molecules. This produces secondary electrons which transport this energy radially away from the ion path. The ranges of most of these electrons do not exceed a few…

Biological Physics · Physics 2017-11-07 Pablo de Vera , Eugene Surdutovich , Nigel J. Mason , Andrey V. Solov'yov

The passage of energetic ions through tissue initiates a series of physico-chemical events, which lead to biodamage. The study of this scenario using a multiscale approach brought about the theoretical prediction of shock waves initiated by…

Biological Physics · Physics 2021-07-28 Pablo de Vera , Eugene Surdutovich , Nigel J. Mason , Fred J. Currell , Andrey V. Solov'yov

The transport of low-energy electrons through the coating of a radiosensitizing metallic nanoparticle under fast ion irradiation is analyzed theoretically and numerically. As a case study, we consider a poly(ethylene glycol)-coated gold…

Atomic and Molecular Clusters · Physics 2018-06-26 Kaspar Haume , Pablo de Vera , Alexey Verkhovtsev , Eugene Surdutovich , Nigel J. Mason , Andrey V. Solov'yov

A review of the research on electron and ion transport in dense rare gases is presented. The investigation of the transport properties of electrons in dense rare gases aims at understanding the dynamics and energetics of electron states in…

Atomic Physics · Physics 2016-11-15 A. F. Borghesani

The angular distribution of the emitted electrons, following the two-photon ionization of the hydrogen-like ions, is studied within the framework of second order perturbation theory and the Dirac equation. Using a density matrix approach,…

Atomic Physics · Physics 2007-05-23 Peter Koval , Stephan Fritzsche , Andrey Surzhykov

The angular distribution of the emitted electrons, following the two--photon ionization of the hydrogen--like ions, is studied within the framework of second order perturbation theory \textit{and} the Dirac equation. Using a density matrix…

Atomic Physics · Physics 2007-05-23 Peter Koval , Stephan Fritzsche , Andrey Surzhykov

The dependence on an applied electric field of the ionization current produced by an energetic electron stopped in liquid helium can be used to determine the spatial distribution of secondary electrons with respect to their geminate…

Instrumentation and Methods for Astrophysics · Physics 2014-02-24 G. M. Seidel , T. M. Ito , A. Ghosh , B. Sethumadhavan

We propose an inclusive approach for calculating characteristics of secondary electrons produced by ions/protons in tissue-like media. This approach is based on an analysis of the projectile's interaction with the medium on the microscopic…

Biological Physics · Physics 2009-11-13 E. Surdutovich , O. I. Obolensky , E. Scifoni , I. Pshenichnov , I. Mishustin , A. V. Solov'yov , W. Greiner

The ionization potential distributions of hydrated hydroxide and hydronium are computed with many-body approach for electron excitations with configurations generated by {\it ab initio} molecular dynamics. The experimental features are well…

Chemical Physics · Physics 2014-01-20 Charles W. Swartz , Xifan Wu

We investigate the energy and angular distributions of the ions reaching the electrodes in low-pressure, capacitively coupled oxygen radio-frequency discharges. These distributions, as well as the possibilities of the independent control of…

Plasma Physics · Physics 2018-11-14 Zoltan Donko , Aranka Derzsi , Mate Vass , Julian Schulze , Edmund Schuengel , Satoshi Hamaguchi

The transport and dispersion of multiple species of charged ions are central to many biological and physical processes, including electrokinetic ion separation. However, most theoretical studies of dispersion in channels have focused on…

Soft Condensed Matter · Physics 2026-05-04 Thakurdas Mahata , Anirban Chatterjee , Ameeya Kumar Nayak

An instability of a liquid droplet traversed by an energetic ion is explored. This instability is brought about by the predicted shock wave induced by the ion. An observation of multifragmentation of small droplets traversed by ions with…

Medical Physics · Physics 2017-12-06 Eugene Surdutovich , Alexey Verkhovtsev , Andrey V. Solov'yov

Irradiation of biological matter triggers a cascade of secondary particles that interact with their surroundings, resulting in damage. Low-energy electrons are one of the main secondary species and electron-phonon interaction plays a…

Chemical Physics · Physics 2017-03-29 Valerio Rizzi , Tchavdar N. Todorov , Jorge J. Kohanoff

We discuss the photon emission that occurs due to the radiative recombination of an electron on a nearby center after tunneling ionization. The model of an active electron is used, and analytical solution to three-dimensional problem is…

Mesoscale and Nanoscale Physics · Physics 2013-10-18 P. A. Golovinski , A. A. Drobyshev

Bioelectrochemical systems are electrochemical cells that rely on conductive biofilms covering an electrode. We consider the example of a microbial fuel cell, and we derive a dynamic model of ion transport, biochemical reactions and…

Electrons move along potential or thermal gradients. In the presence of a global gradient, applied e.g. to the two terminals of a conductor, this induces electric charge and heat currents. They can also flow between two equilibrated…

Mesoscale and Nanoscale Physics · Physics 2018-06-27 Rafael Sánchez

Some aspects of direct ion transfer across the water/1,2-dichloroethane are analyzed using a very simple model based on thermodynamic considerations. It was concluded that ion solvation by water molecules may occur in some particular cases…

Chemical Physics · Physics 2008-02-03 C. Sanchez , S. A. Dassie , A. M. Baruzzi , E. P. M. Leiva

The dynamics of (few) electrons dissolved in an ionic fluid--as when a small amount of metal is added to a solution while upholding its electronic insulation--manifests interesting properties that can be ascribed to nontrivial topological…

Chemical Physics · Physics 2023-09-08 Paolo Pegolo , Stefano Baroni , Federico Grasselli

The ``flow'' of electric currents and heat in standard metals is diffusive with electronic motion randomized by impurities. However, for ultraclean metals, electrons can flow like water with their flow being described by the equations of…

Strongly Correlated Electrons · Physics 2023-03-28 Lars Fritz , Thomas Scaffidi
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