Collisions of electrons

A number of the mechanistic features proposed by Williams and Hayes were incorporated into a theoretical model developed by Denaro et al. to explain the kinetics of styrene polymerization in a 2 MHz discharge. Initiation was proposed to proceed through the collision of electrons with the polymer film... 

Castro, T L. G. Ruiz-Suarez, J. C. Ruiz-Suarez, M. J. Molina, and M. Montero, Sensitivity Analysis of a UV Radiation Transfer Model and Experimental Photolysis Rates of NO, in the Atmosphere of Mexico City, Atmos. Environ., 31, 609-620 (1997). Crosley, D. R., Rotational and Translational Effects in Collisions of Electronically Excited Diatomic Hydrides, J. Phys. Chem., 93, 6273-6282 (1989). 

Crosley, D. R., Rotational and Translational Effects in Collisions of Electronically Excited Diatomic Hydrides, . /. Phys. Chem., 93, 6273-6282 (1989). 

Collisions of Electronically Excited Atoms and Molecules (Muschlitz) 10 121... 

G. F. Drukarev, Collisions of Electrons with Atoms and Molecules. Nauka, Moscow, 1978 (in Russian). 

Both electrical and mechanical energies can be converted with 100% efficiency into thermal energy, the former by collisions of electrons in a resistor and the latter by interactions of moving surfaces. Such frictional processes are what cause the disappearance of mechanical or electrical energy in systems. 

In Chap. XX, Sec. 3, we spoke about the detachment of electrons from atoms, and in Sec. 4 of that chapter we took up the resulting chemical equilibrium, similar to chemical equilibrium in gases. But electrons can be detached not only from atoms but from matter in bulk, and particularly from metals. If the detachment is produced by heat, we have thermionic emission, a process very similar to the vaporization of a solid to form a gas. The equilibrium concerned is very similar to the equilibrium in problems of vapor pressure, and the equilibrium relations can be used, along with a direct calculation of the rate of condensation, to find the rate of thermionic emission. In connection with the equilibrium of a metal and its electron gas, we can find relations between the electrical potentials near two metals in an electron gas and derive information about the so-called Volta difference of potential, or contact potential difference, between the metals. We begin by a kinetic discussion of the collisions of electrons with metallic surfaces. 

High-energy electrons are used in nuclear physics for the investigation of elementary and fundamental particles. Energies of the order of several GeV are sufficient to produce other elementary particles and antiparticles and to study their interactions. Collisions of electrons and positrons are investigated by use of storage rings. 

In the gas discharge method, ozone is produced from 0 atoms, which were produced by dissociating O2 by inelastic collisions of electrons. The over-all reaction is ... 

Collision of electron beam with molecule, causing ejection of electrons Collision of beam of neutral atoms with solid sample... 

Elastic Collisions Transfer of Energy. In elastic collisions of electrons with heavy gas molecules, two effects are of importance. First there is a redistribution of directions of travel of the electrons and second there is a very slight loss of energy (and therefore speed) as a very small amount of momentum and energy are transferred to the molecule by the electron. 

This equation shows directly the role of collisions of electrons in conversion of electrical energy to energy of the gas. 

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