In continuation of a previous theoretical work, we confirm experimentally the possibility of confining ions in a r.f. quadrupole trap supplied with an impulsional voltage. We have obtained the stability diagram of the trap corresponding to confined Xe+ions. This diagram shows a zone of optimum confinement. Then, we have compared the confinement efficiency of the trap, when supplied by a sinusoidal or impulsional voltage, for two equivalent points of trap operation located in their corresponding stability diagram. © 1991.
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