A point source emitting 2.1×1012 gamma-rays per second is located at the center of an iron sphere of radius 10 cm. The gamma-rays have an energy of 1.0 MeV. What is the uncollided gamma-ray flux in cm-2-s-1 at a distance 20 cm from the source, assuming the sphere is surrounded by a vacuum?

A point source emitting 2.1×1012 gamma-rays per second is located at the center of an iron sphere of radius 10 cm. The gamma-rays have an energy of 1.0 MeV. What is the uncollided gamma-ray flux in cm-2-s-1 at a distance 20 cm from the source, assuming the sphere is surrounded by a vacuum?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 64P: What is the longest wavelength of radiation that can eject a hotoelectron from potassium, given the...

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Question

A point source emitting 2.1×1012 gamma-rays per second is located at the center of an iron
sphere of radius 10 cm. The gamma-rays have an energy of 1.0 MeV. What is the uncollided
gamma-ray flux in cm-2-s-1 at a distance 20 cm from the source, assuming the sphere is
surrounded by a vacuum?

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