Photography of interactions from my cloud chambers. Each identification is subject to a probability as we are always not 100% certain of what we observe particularly if the magnetic field is not uniform or absent.
Radioactives samples
Electron/positon tracks
Delta rays
Ejection of an electron from an atom after the passage of a charged particle
Alpha tracks
Spallation
40 x 20 cm A clear spallation at 2600 m of altitude. A delta ray is visible, coming from a proton track (the one going upward).