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Particle beam target, GSI

Particle beam target, GSI

A100/0017

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Credit

DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY

Caption

Particle beam target for creating new chemical elements. This target is used in the Separator for Heavy Ion Reaction Products (SHIP) at the Society for Heavy Ion Research (GSI) centre at Darmstadt, Germany. The wheel turns so that each of the 8 thin lead targets around its rim are struck by a beam of fast heavy ions from the UNILAC accelerat- or. The atomic nuclei undergo fusion reactions to form new elements & forms (isotopes) of other elements. These pass through a fragment separator to a detector for identification. A GSI team led by Peter Armbruster discovered elements 107-112, the six heaviest known, during 1981-96. Photographed in 1997.

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