Recoil ion confinement in a radio frequency quadrupole ion trap

Abstract

Multicharged Ne q+ recoil ions (3≤q≤8) arising from impact of 1 MeV/u Cl beam ions (mean charge near 11e) on Ne target gas have been produced and observed with good resolution in an axially symmetric radio frequency quadrupole ion trap. Investigations of the stability properties are in agreement with theory, while measurements of ion storage time constants, in comparison with those in other trap types, indicated that ion loss arose from electron capture collisions.