Cosmic ray tracks in bubble chamber

Cosmic ray tracks in bubble chamber

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This image is part of the feature 50 Years Of Cern Physics


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

Caption: Cosmic ray particle tracks. Coloured image showing a collection of tracks left by subatomic cosmic ray particles in a bubble chamber. A bubble chamber is a container filled with liquid hydrogen which is superheated: momentarily raised above its normal boiling point by a sudden drop in pressure in the container. Any charged particle passing through the liquid in this state leaves behind a trail of tiny bubbles as the liquid boils in its wake. These bubbles are seen as fine tracks, showing characteristic paths of different types of particle. The paths are curved due to an intense applied magnetic field. Tightly-wound spiral tracks are due to low- energy electrons.

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Keywords: bubble, bubble chamber, colour, coloured image, cosmic ray, image, particle physics, particle tracks, photo, physics, track, tracks

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