2022 Impact factor 2.7
Hadrons and Nuclei

Eur. Phys. J. A 13, 247-253 (2002)

Present and future experiments with stored exotic nuclei at relativistic energies

H. Geissel and G. Münzenberg

Gesellschaft für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt, Germany

(Received: 1 May 2001)

Pioneering experiments with stored and cooled exotic nuclei at relativistic energies have been performed using the combination of the fragment separator FRS with the storage-cooler ring ESR. Exotic nuclei created in peripheral collisions are spatially separated in-flight and injected into the storage ring for high-precision mass and unique lifetime measurements. Lifetimes of stored bare and few-electron nuclei have been measured to study the influence of the electron density on the $\beta$ decay. This condition, relevant for stellar plasma, can now be systematically investigated in the laboratory for the first time. Characteristic experiments of the present FRS-ESR system are presented and perspectives for a next-generation facility are briefly outlined.

29.30.-h - Spectrometers and spectroscopic techniques.
29.20.Dh - Storage rings.
06.30.Dr - Mass and density.
21.10.Tg - Lifetimes.

© Società Italiana di Fisica, Springer-Verlag 2002