Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e., protons with one orbiting electron) are fed into a chamber where there is a strong magnetic field. Electrons in this chamber are trapped in tight orbits, which greatly increases the chance that they will collide with a hydrogen atom and ionize it. One such source uses a magnetic field of 50 mT, and the electrons’ kinetic energy is 2.0 eV. If the electrons travel in a plane perpendicular to the field, what is the radius of their orbits?
Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e., protons with one orbiting electron) are fed into a chamber where there is a strong magnetic field. Electrons in this chamber are trapped in tight orbits, which greatly increases the chance that they will collide with a hydrogen atom and ionize it. One such source uses a magnetic field of 50 mT, and the electrons’ kinetic energy is 2.0 eV. If the electrons travel in a plane perpendicular to the field, what is the radius of their orbits?
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 55P: The magnetic field in a cyclotron is 1.25 T, and the maximum orbital radius of the circulating...
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Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e., protons with one orbiting electron) are fed into a chamber where there is a strong magnetic field. Electrons in this chamber are trapped in tight orbits, which greatly increases the chance that they will collide with a hydrogen atom and ionize it. One such source uses a magnetic field of 50 mT, and the electrons’ kinetic energy is 2.0 eV. If the electrons travel in a plane perpendicular to the field, what is the radius of their orbits?
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