Lead ion collisions

Lead ion collisions

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Credit: CERN/SCIENCE PHOTO LIBRARY

Restrictions: Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service

Caption: Lead ion collisions. Particle tracks from the first lead ion collisions seen by the ALICE (a large ion collider experiment) detector at CERN (the European particle physics laboratory) near Geneva, Switzerland, on 7th November 2010. Each collision, produced after the ions had been accelerated to an energy of 287 TeV (tera electron volts) by the large hadron collider (LHC), leads to the production of thousands of subatomic particles. The tracks are colour-coded according to energy from low (blue) to high (red). Lead ion collisions are expected to produce quark-gluon plasma, a primordial state of matter thought to have been present in the Universe microseconds after the Big Bang.

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Keywords: 21st century, 7 november 2010, a large ion collider experiment, alice, black background, cern, collision, collisions, cosmological, cosmology, decay products, european particle physics laboratory, experiment, fundamental particles, geneva, heavy ion collision, heavy-ion events, high energy, inner tracking system, ions, large hadron collider, lead ion, lhc, matter, particle accelerator, particle detector, particle physics, particle track, physical, physics, quantum chromodynamics, research, structure of matter, subatomic particles, switzerland, trace, traces, tracks, trajectories, trajectory

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