You are at the controls of a particle accelerator sending a beam of 1.50 x 107 m/s protons (mass m) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such protons rebound with a speed of 1.2 x 10' m/s. Assume that the initial speed of the target nucleus is negligible and the collision is elastic. A. Find the mass of one nucleus of the unknown element in terms of the proton mass m. B. What is the speed of the unknown nucleus immediately after such a collision? C. Show that the total kinetic energy is the same before and after the collision.

You are at the controls of a particle accelerator sending a beam of 1.50 x 107 m/s protons (mass m) at a gas target of an unknown element. Your detector tells you that some protons bounce straight back after a collision with one of the nuclei of the unknown element. All such protons rebound with a speed of 1.2 x 10' m/s. Assume that the initial speed of the target nucleus is negligible and the collision is elastic. A. Find the mass of one nucleus of the unknown element in terms of the proton mass m. B. What is the speed of the unknown nucleus immediately after such a collision? C. Show that the total kinetic energy is the same before and after the collision.

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter5: Some Basic Nuclear Physics

Section: Chapter Questions

Problem 15P

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