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Hosting Legal Entity
Self-standing RI
Legal Status
International or intergovernmental organisation or framework
Esplanade des Particules 1, CERN, Meyrin, PO: CH-1217 (Switzerland)
Type Of RI
Coordinating Country
Current Status:
Operational since 1992
Operational since 1967 to 1990
Scientific Description
The Isotope Separator On-Line DEvice, ISOLDE, is a facility dedicated to the production of a large variety of radioactive beams, located at the European Organization for Nuclear Research, CERN. Since 1992, the facility is receiving protons at 1.4 GeV from the Proton-Synchrotron Booster (PSB). This energetic proton beam is sent onto a variety of targets to produce exotic radioisotopes via spallation, fragmentation and fission reactions. The ISOLDE facility provides low energy radioactive beams and post-accelerated beams up to 10 MeV/u.In the last 50 years the ISOLDE facility has gathered unique expertise in research with radioactive beams. Over 700 isotopes of more than 70 elements have been used in a wide range of research domains, including cutting edge studies in nuclear structure, atomic physics, nuclear astrophysics, and fundamental interactions. These probes are also used to do frontier research in solid state and life sciences.

RI Keywords
Mass separator, Applications in solid-state physics and life sciences, Radioactive ion beams, ISOL-type facility, Decay mode studies, Nuclear ground-state properties, Nuclear reactions and astrophysics, Post-accelerator
RI Category
Nuclear Research Facilities
Scientific Domain
Physics, Astronomy, Astrophysics and Mathematics
Biological and Medical Sciences
Chemistry and Material Sciences
ESFRI Domain
Physical Sciences and Engineering
MEDICIS project

Production of innovative isotopes for medicine.

Computational resources

CERN large-scale computing.

International cooperation

Contacts with laboratories in ISOLDE member states and beyond.

Access to Accelerator

Access to the facility.

Physics group and administration

User support, access to the laboratory, training (students, seminars, workshops).


HIE-ISOLDE (before: REX-ISOLDE) post-accelerator for reaching 5.5MeV/u (in 2015) for radioactive beams from He up to U.

Two target systems

2 front-ends for production, ionization, and extraction of radioactive beams.

Two magnetic separators: GPS and HRS

Isobaric separation of the produced beams; m/dm around 500 for GPS and up to 5000 for HRS.

RILIS: resonant ionization laser ion source

Online and offline systems of pulsed lasers for efficient and selective ionization of radioactive beams.

Experimental beamlines

A dozen experimental beamlines for fixed and travelling experiments: laser spectroscopy, ion traps, decay studies, Coulomb excitation and transfer reactions, collections, and more.

Access Type
Access Mode
Excellence Driven
Date of last update: 15/05/2019
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