Abstract: As one of the most important parts of the Paul trap, the radiofrequency (RF) source has great influences on the performance of the ion trap. To improve the stability and the depth of the pseudo-potential well of the ion trap, two sets of RF sources and the corresponding detection circuits were designed and implemented in a Paul trap. With the implementation, absorbed signals of ¹⁹⁹Hg⁺ and N⁺₂ were detected from trapped ions.

Key words: ion trap, radio frequency (RF) source, push-pull power amplifier, depth of the pseudo-potential well