D. Freer

The quadrupole ion store (QUISTOR). Part X. Space charge and ion stability. B. On the theoretical distribution and density of stored charge in RF quadrupole fields

J. Todd, R. M. Waldren, D. Freer, 1980 .

The quadrupole ion store (QUISTOR). Part xii. The trapping of ions injected from an external source: A description in terms of phase-space'dynamics

J. Todd, D. Freer, R. Waldren, 1980 .

The quadrupole ion store (QUISTOR). Part XI. The model of ion motion in a pseudo-potential well: An appraisal in terms of phase-space dynamics

J. Todd, D. Freer, R. Waldren, 1980 .