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tskir t1_iz58n12 wrote

Alpha particles are positively charged, so they will be deflected by a magnetic field. The magnitude of the deflection will depend on the strength of the magnetic field and the velocity of the alpha particles. Because alpha particles are relatively massive and have a relatively large charge, they will experience a larger force and greater deflection in a magnetic field than other particles with the same velocity.

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TitusRex t1_iz59fn4 wrote

Alpha particles have a positive charge, so they will be attracted to a negatively charged grid. Strong electric fields can be used to slow down and control the motion of alpha particles. Strong magnetic fields, such as those created by superconducting magnets, will cause the particles to move in circles, following the field lines.

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CosmoSounder t1_iz832fx wrote

The effect of any charged particle in an electric and/or magnetic field can be calculated using the Lorentz Force:

F = qE + q v x B

So the alpha particle will be attracted to a negatively charged grid, while a magnetic field will cause it to deflect in circular motion. Note that no matter how strong a B field you make it, the alpha particle will continue to drift toward the negative grid.

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mfb- t1_iz8gvdn wrote

Replying to tskir (#872,142)

The large mass reduces the deflection - it increases inertia but not the force. An electron at the same speed will be deflected much more as its charge to mass ratio is larger by a factor 4000.

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