cloud chamber and B field applied
Alpha tracks. The alpha particles have high ionising power and approx the same energy.In a cloud chamber or bubble chamber , tracks of alpha, beta and gamma can be seen as the ions formed along its tracks can be made visible by producing condensation of vapour just like the trails of an aeroplane in the sky. The ionisation power of gamma is weak and therefore tracks from gamma are difficult to see.
The particles curve is opposite direction due to formation of opposite charges subjected to magnetic field. The tracks need proper identificaiton to know what produces it.
