False-colour bubble chamber photo of the product- ion & decay of a lambda particle. A high-energy proton (yellow) enters from bottom,knocks out an atomic electron (green) in passing,then collides with a proton at rest in the liquid hydrogen of the bubble chamber. The collision produces 7 negative pions (blue),9 positive particles (red),which include a proton & a kaon as well as 7 positive pions,and the lambda. Being neutral,the lambda leaves no track,but reveals its existence when it decays into a proton (yellow) & a negative pion (purple). The lambda is one of the family of strange particles,which contain a strange quark | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Brookhaven National Laboratory |
Taille de l’image : | 3532 px × 5004 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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