Eur. Phys. J. A 13, 247-253 (2002)
Present and future experiments with stored exotic nuclei at relativistic energies
H. Geissel and G. MünzenbergGesellschaft für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt, Germany
(Received: 1 May 2001)
Abstract
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
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
