A Charged Particle Moving in the Magnetic Field Created by an External

Multiple Choice

A charged particle moving in the magnetic field created by an external magnet experiences a force that is perpendicular to both the particle's velocity $\vec{v}$ and the direction of the magnetic field $\vec{B}$ in the sense indicated by your right thumb if your right index finger points in the direction of $\vec{v}$ and your adjacent finger points in the direction of $\vec{B}$ . (The magnetic field $\vec{B}$ , in turn, points away from the external magnet's north pole and toward its south pole.) A certain radioactive substance emits quantons that, when placed in a magnetic field directed away from the observer, bend to the right side of their direction of travel. These nuclei are decaying via which kind of process?

A) An alpha decay process}
B) A beta decay process}
C) A gamma decay process
D) There is not enough information to specify.