Present and future experiments with stored exotic nuclei at relativistic energies |
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Authors: | H Geissel G Münzenberg |
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Institution: | Gesellschaft für Schwerionenforschung, Planckstra?e 1, D-64291 Darmstadt, Germany, DE
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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 β 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.
Received: 1 May 2001 / Accepted: 4 December 2001 |
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Keywords: | PACS 29 30 -h Spectrometers and spectroscopic techniques – 29 20 Dh Storage rings – 06 30 Dr Mass and density – 21 10 Tg Lifetimes |
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