Recent Results on Antiprotonic Atoms using a Cyclotron Trap at LEAR

Abstract

A new technique to stop negatively charged particles inside a cyclotron field is motivated and presented. Its ability to produce a sufficient number of antiprotonic atoms is demonstrated with experimental results at target gas pressures previously not attainable. Thus the knowledge of the cascade process in antiprotonic hydrogen could be extended considerably and the strong interaction parameters in this system could be measured with good precision. It could also be shown that antiprotonic noble gas atoms up to Krypton are ionized completely. Moreover, the possibility to extract slow antiprotons out of the center of the cyclotron trap is discussed shortly.