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Showing 1 to 9 of 9 for “"dissociative recombination"”.
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Electron-Ion Recombination at Temperatures below 300K
Title: Recombination study of ions with electrons at temperatures below 300 K Author: Tomáš Kotrík Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: Prof. RNDr. Juraj Glosík, DrSc. Department of Surface and Plasma Science Abstract: Presented is the study of …
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Competition between Reaction Channels in Electron Collisions of the Hydrogen Molecular Ion HD+
The energy-differential cross-section of dissociative recombination of the HD+ molecular ion (HD+ + e -> H + D) was measured with high precision and on an absolute scale, at the heavy-ion storage ring TSR (Max-Planck-Institut für Kernphysik). The measured cross-section shows a previously unknown …
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Fragmentation Studies with Stored Beams of Small Polyatomic Ions
… molecules is studied for two cases: The dissociative recombination of the H3+ cation and its isotopomers with slow electrons, focusing on fragmentation geometries and isotope effects, and the fragmentation of the LiH2- anion following electron detachment, here focusing on the chemical …
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Electron collisions and internal excitation in stored molecular ion beams
… on the internal excitation are investigated. Dissociative recombination (DR) and inelastic and super-elastic collisions are studied in the system of He2+. The DR rate coefficient at low energies depends strongly on the initial vibrational excitation in this system. Therefore changes in the DR …
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Inelastic collisions and recombination between electrons and molecular ions
… electron. This process is closely related to dissociative recombination (DR). For the DR and SEC of H_2^+ and D_2^+ ions with near-zero kinetic energy electrons absolute vibrational state specific rate coefficients were measured for the first time. Another series of experiments was focused on …
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Microwave Interferometric Measurements of Electron Density in Laser-Generated Plasma Channels
… density profiles. Model predictions of the dissociative recombination rate constants, $\alpha_D$, in argon and nitrogen are reported, \mbox{$\alpha_D\,(\mathrm{Ar})=1-6 \times 10^{-6}$~cm$^3$~s$^{-1}$} and \mbox{$\alpha_D\,(\mathrm{N}_2)=1-3.25 \times 10^{-6}$~cm$^3$~s$^{-1}$}. At pressures …
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The chemistry of metal-containing molecules in the circumstellar envelopes of late-type stars: Millimeter-wave observations and abundance modeling
… a metal ion with a cyanopolyne chain followed by dissociative recombination. It has also been discovered that, as a star evolves, abundances of metal molecules in the inner circumstellar envelope decrease due to photo-destruction processes or adsorption onto dust grains. A new chemical code to …
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Three-dimensional wind measurements and modeling using a bi-static Fabry-Perot interferometer system in Brazil
… of the 630.0-nm emission caused by the dissociative recombination of O2+. The FPI systems can operate in two different modes: cardinal and common volume (CV). In cardinal mode, each FPI looks at a 45 degree elevation angle towards geographic north, east, south, and west followed by a …
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Development Of Theoretical And Computational Methods For Few-body Processes In Ultracold Quantum Gases
… gases: three-body resonances and three-body recombination. Three-body recombination causes the ultracold gas to heat up and atoms to leave the trap where they are confined. Therefore, it is an undesirable effect in the process of forming ultracold quantum gases. Metastable three-body states …