Recombination of H2D+and HD2+ions with electrons at 80 K

Nuclear spin effect on recombination of H₃⁺ ions with electrons at 77 K.

Utilizing different ratios of para to ortho H₂ in normal and para enriched hydrogen, we varied the population of para-H₃⁺ in an H₃⁺ dominated plasma at 77 K. Absorption spectroscopy was used to measure the densities of the two lowest rotational states of H₃⁺. Monitoring plasma decays at different populations of para-H₃⁺ allowed us to determine the rate coefficients for binary recombination of p...

Electron-Ion Recombination at 10 K

This work is focused on recombination processes in low temperature plasma down to 10 K. When reaching this low temperature in atomic gases, Collisional Radiative Recombination (CRR) where extra electron carries off energy, is dominant. A few accomplished CRR experiments do not follow theoretical predictions of very strong negative dependence. We propose to study transition from dissociative and...

Binary recombination of para- and ortho-H3+ with electrons at low temperatures.

Results of an experimental study of binary recombination of para- and ortho-H(3)(+) ions with electrons are presented. Near-infrared cavity-ring-down absorption spectroscopy was used to probe the lowest rotational states of H(3)(+) ions in the temperature range of 77-200 K in an H(3)(+)-dominated afterglow plasma. By changing the para/ortho abundance ratio, we were able to obtain the binary rec...

Recombination of open-4f-shell W18+ ions with free electrons

A bright metastable atom source at 80 K