Multi-temperature moment theory of Ag+ ion motion and reaction with D2 in ion traps

A theoretical calculation is reported of the time and space dependence of the reaction rate coefficient in a stretched quadrupole ion trap. The system consists of Ag+ ions moving in trace amounts through a dilute gas consisting primarily of He or Ar buffer gas, but with a small amount of a reactive neutral, D2. These systems were chosen because there are available now accurate potential energy curves for Ag+ ions interacting with He and Ar gas and because the cross section for Ag+ reaction with D2 is known over a wide range of collision energy.