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Introduction to Plasmas and Plasma Dynamics by Haibin Tang, Thomas M. York

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Ionization in Gases

Introduction

The process of ionization involves the creation of electrons that are free from the bonds of atomic structure. In gases the creation of free electrons can occur in a number of ways, including collisions and radiation. The process of ionization is oftentimes balanced by the process of deionization. The effectiveness of ionization processes depends very much on the gas pressure. Pressure is a variable that indicates the random thermal energy of particle motion. Pressure is a product of particles per unit volume and energy per particle. Gases at low pressure with higher energy per particle ionize more easily.
The understanding of ionization depends very much on an understanding of the quantum model atom. In this model ...

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