Streamer Chamber Photo Of Tritium Nucleus
by Prof. G Piragino/science Photo Library
Title
Streamer Chamber Photo Of Tritium Nucleus
Artist
Prof. G Piragino/science Photo Library
Medium
Photograph - Photograph
Description
False-colour streamer chamber photo of a tritium nucleus produced at the Low Energy Antiproton Ring (LEAR) at CERN, the European particle physics laboratory outside Geneva. An antiproton enters at the bottom of the picture & annihilates with a proton in the helium-filled chamber to produce the tritium nucleus & 2 pions. The nucleus of tritium, or heavy hydrogen", has 1 proton & 2 neutrons; it produces the thick curving track at centre right. The pions, one negative, one positive, produce the less dense tracks that shoot off towards top right & top left. Reactions of this kind occurred in the early Universe, when lightweight nuclei such as helium were beginning to form."
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October 3rd, 2018
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