Correlation of Excess Energies of Dissociative Electron Attachment Processes with the Translational Energies of Their Products

Abstract

Articles you may be interested inLow energy (0-10 eV) electron attachment to CF3Cl clusters: Formation of product ions and analysis of excess translational energy J. Chem. Phys. 93, 357 (1990); 10.1063/1.459534Indirect process in the dissociative attachment of low energy electrons to molecules Appearance potentials and translational energies of the products resulting from several dissociative electron capture processes have been measured. Excess energies were determined for each process from the measured appearance potentials and known ground-state heats of formation of the products and reactants. As with positive ions, the results were found to agree with the predictions of classical statistical theory. Application of the method is demonstrated in determination of the electron affinity of radicals.

Comment on measurements of translational energies of dissociation fragments

“…radius sector field mass spectrometer with deflection plates placed immediately after a 5-plate ion gun, after the method of Taubert. 3 The source has a narrow exit slit which permits a normal operating pressure of 5 p.. The source temperature is normally 350 o K. With this we have obtained very good agreement with theoretical values for thermal ions as well as with translational energies of fragment ions obtained by others.…”

Crossed-beams reactions of barium, strontium, and calcium with some halides of methane

“…In analogy with CH2I2 and CF3I, both products might form; this would also be consistent with dissociative electron attachment results for CCl*, where both Cland CI2" are observed. 24…”

A Novel Energy Efficient Plasma Chemical Process for the Destruction of Volatile Toxic Compounds

“…data on electron attachment to methylene chloride were available only for electron energies below 0.8 eV [23][24][25][26]. Therefore, we studied electron attachment to both these molecules in an electron swarm apparatus.…”