Proton and alpha particle tracks

Proton and alpha particle tracks

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Caption: False-colour cloud chamber photograph showing the difference between a proton (red) & an alpha particle (yellow). The curvature of the tracks is proportional to charge & inversely proportional to momentum (the product of mass & velocity). So the alpha particle, with double the charge of the proton but 4 times its momentum, curves less in the chamber's magnetic field. The proton here has an energy of 1.6 MeV, the alpha of 7 MeV. The blue horizontal lines are wires within the cloud chamber & the black rectangle at bottom is part of the chamber's structure.

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Keywords: alpha particle, cloud chamber image, coloured, images, magnified image, microscopic photos, motion action, move movement moving, odyssey, particle physics, photo, proton, subatomic track, subjects, tracks

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