Mass spectra of positive and negative ions in nitrous and nitric oxides

Mass spectra of positive and negative ions in nitrous and nitric oxide

Determination of Electron Affinity Differences by Surface Ionization

Electron affinity differences determined by surface ionization on hot tungsten through use of polyatomic halogen molecular bea

Integrating People Experiencing Disabilities into Community Arts Events: Model Project and Guidelines

People experiencing disabilities, and their advocates, are actively demanding the right to live, work, and recreate in integrated and normalized community settings. Community based art education events will be impacted by this in-process civil rights movement. This article focuses on the means through which art educators can make community art events accessible to people experiencing disabilities. Segregated community events, like the Very Special Arts Festivals, are discussed as they are able to accommodate community integration. Guidelines for creating barrier-free environments are included

Radio-frequency discharges in Oxygen. Part 1: Modeling

In this series of three papers we present results from a combined experimental and theoretical effort to quantitatively describe capacitively coupled radio-frequency discharges in oxygen. The particle-in-cell Monte-Carlo model on which the theoretical description is based will be described in the present paper. It treats space charge fields and transport processes on an equal footing with the most important plasma-chemical reactions. For given external voltage and pressure, the model determines the electric potential within the discharge and the distribution functions for electrons, negatively charged atomic oxygen, and positively charged molecular oxygen. Previously used scattering and reaction cross section data are critically assessed and in some cases modified. To validate our model, we compare the densities in the bulk of the discharge with experimental data and find good agreement, indicating that essential aspects of an oxygen discharge are captured.Comment: 11 pages, 10 figure