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Your search keyword '"Particle"' showing total 2 results
Start Over Descriptor "Particle" Topic physics Publisher taylor & francis ltd
2 results on '"Particle"'

1. Particle Adhesion to Drops.

Author

Krasovitski, Boris and Marmur, Abraham

Subjects
*ADHESION, *PARTICLES, *ADSORPTION (Chemistry), *FLUID mechanics, *PHYSICS
Abstract

The adhesion of spheroidal particles to spherical drops is calculated and discussed in terms of an equilibrium-penetration index. The present study emphasizes the case of particles that are sufficiently large to affect the drop volume upon penetration. It is shown that the more elongated the particles, the steeper the dependence of the penetration index on the contact angle. The effect of line tension on nanoscale particles is considered. Positive line tensions increase the steepness of the dependence of penetration index on contact angle whereas negative line tensions decrease this dependence. In addition, the energy barrier caused by positive line tensions is presented and discussed. [ABSTRACT FROM AUTHOR]

Published
2005
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2. Classical-trajectory calculations of the electronic stopping cross-section for low-energy H and H+ projectiles by H2-molecules

Author

J.M. Rodríguez-Aguirre and Mario M. Jakas

Subjects
Physics, Física Atómica, Molecular y Química, Nuclear and High Energy Physics, Radiation, Hydrogen, Ciencias Físicas, classical Monte carlo, chemistry.chemical_element, Electron, Condensed Matter Physics, stopping, symbols.namesake, Cross section (physics), Molecular dynamics, chemistry, numerical simulation, Molecular-Dynamic, Gaussian function, symbols, Stopping power (particle radiation), Particle, General Materials Science, Atomic physics, Quantum, CIENCIAS NATURALES Y EXACTAS
Abstract

A model that enables the classical-trajectory simulation of the interaction between an atomic particle and a target containing one or more electrons is devised. It makes use of the so-called Gaussian kernel approximation (GKA) and ad hoc potentials. In this way, the most relevant quantum properties of the electron can be preserved and, at the same time, still using classical mechanics to solve the response of the electronic system to the presence of a moving, heavy charge. As a first step to assessing the proposed model we calculate the electronic stopping cross section for 1keV to 20 keV Protons and Hydrogen impinging upon atomic and molecular Hydrogen targets. The results show a fairly good agreement between experiments and previous theoretical calculations over the entire bombarding energy studied in this paper Fil: Rodriguez Aguirre, Juan Manuel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Jakas, M. M.. Universidad de la Laguna; España

Published
2013

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