The HD+ dissociative recombination rate coefficient at low temperature

The HD+ dissociative recombination rate coefficient at low temperature

Blog Article

The effect of the rotational temperature of the ions is considered for low-energy dissociative recombination (DR) of HD+.Merged beams measurements with HD+ ions of a rotational temperature near 300 K are compared skull bride and groom to multichannel quantum defect theory calculations.The thermal DR rate coefficient for a Maxwellian electron velocity distribution is derived from the merged-beams data and compared to theoretical results for a range of rotational temperatures.Good agreement is found for the theory with 300 K rotational temperature.

For a low-temperature plasma environment where also the rotational temperature assumes 10 K, theory predicts a considerably higher thermal DR rate coefficient.The origin of this is traced to predicted resonant echofix spring reverb structures of the collision-energy dependent DR cross section at few-meV collision energies for the particular case of HD+ ions in the rotational ground state.