Hello and thanks for reading 1. The problem statement, all variables and given/known data I'm in high school. I chose my yearly project in physics, and wanted to make a cloud chamber. The subject is "deflection of charged particles in a magnetic field", so I must set a magnet alongside the cloud chamber. I've prepared for it, bought isopropyl alcohol and gathered the Americium 241 source from a smoke detector. The chamber will look like this. [Picture] My question is, what kind of magnets are strong enough to deflect the particles? Will a small neodymium magnet be sufficient? Americium 241 is an alpha radiation emitter. 2. Relevant equations -none- 3. The attempt at a solution I have no idea how strong a magnet can be in order to deflect it clearly. Note: I know the dangers of radiation and chemicals like isopropanol, I take full responsibility of my actions. Note 2: It is my first post, so please tell me if I made a mistake in posting- or a grammar mistake.