Introduction To Health Physics
Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 2, Problem 2.20P
To determine

What is the minimum required power input (in kilowatts) if a cyclotron produces a 100-µA beam of 15-MeV deuterons, if the cyclotron were 100% efficient in converting electrical energy into kinetic energy of the deuterons?

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A Van de Graaff generator  produces a beam of 2.00-MeV deuterons, which are heavy hydrogen nuclei containing a proton and a neutron. (a) If the beam current is 10.0 μA, what is the average separation of the deuterons? (b) Is the electrical force of repulsion among them a significant factor in beam stability? Explain.
A 2.00-T magnetic field is applied perpendicular to the path of charged particles in a bubble chamber. What is the radius of curvature of the path of a 10 MeV proton in this field? Neglect any slowing along its path.
Proton-beam therapy for cancer uses a typical 150 MeV energy to give penetrating power. If five watts of heating power is the maximum that can be tolerated, calculate, i) the number of protons incident per second on the patient, ii) the beam current in amps.

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