Radiation Chemistry of Gases

Atmospheric Chemistry and Greenhouse Gases

Radiation Physics and Chemistry

We review an atomic resolution imaging method based on the analysis of the fine structure in X-ray absorption anisotropy, which results from incident beam diffraction. For a polychromatic X-ray beam, due to the suppression of higher order diffraction fringes, X-ray absorption anisotropy patterns can be interpreted as distorted real-space projections of the atomic structure around absorbing atom...

Radiation chemistry: Radical water.

I onizing radiation is known to be harmful to living organisms because it creates reactive radicals and charged species. In particular, highly energetic X-rays that ionize by removing one of the innermost (core) electrons of an atom lead to a cascade of events that must be better characterized if we are to fully understand their toxic effects 1. Writing in Nature Chemistry, Petr Slavíček, Bernd...

Blackbody Radiation in Optically Thick Gases?

In this work, the claim that optically thick gases can emit as blackbodies is refuted. The belief that such behavior exists results from an improper consideration of heat transfer and reflection. When heat is injected into a gas, the energy is primarily redistributed into translational degrees of freedom and is not used to drive emission. The average kinetic energy of the particles in the syste...

Chemistry of titanium dry etching in fluorinated and chlorinated gases

native stoichiometric oxide, TiO2, always present on the titanium surface, results in a non-reproducible induction time. During etching the surface of titanium is covered by a highly fluorinated layer which protects the metal by the reaction with oxygen. Chlorine is not able to remove the native oxide unless drastic conditions are realized, Once this layer is removed with fluorine, the reaction...