A parallel beam of 1-MeV photons is normally incident on a sheet of uranium, 1.0 mm thick. The incident beam intensity is 10^4 MeV cm^-2 s^-1. (a) Calculate the energy fluence rate transmitted by the sheet. (b) What fraction of the transmitted energy fluence rate is due to uncollided photons? (c) What physical processes are responsible for energy transfer to the sheet? (d) What processes are responsible for energy absorption in the sheet?
Added by Erica B.
Close
Step 1
The incident beam intensity is given as 104 MeV cm-2 s-1. This means that there are 104 MeV of energy passing through each square centimeter of the beam per second. Since the beam is parallel, the number of photons transmitted per unit area per unit time is Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 85 other Physics 103 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Penny R.
A parallel beam of 500 keV photons is normally incident on a sheet of lead 8 mm thick. The rate of energy transmission is 4 x 10^4 MeV/s. a. What fraction of the incident photon energy is absorbed in the sheet? b. How many photons per second are incident on the sheet? c. What fraction of the transmitted energy is due to uncollided photons?
Timothy J.
A parallel beam of 1-MeV photons is normally incident on a 1.2-cm aluminum slab (ρ = 2.70 g cm–3) at a rate of 103 s–1. The mass attenuation and mass energy-absorption coefficients are, respectively, 0.0620 cm2 g–1 and 0.0270 cm2 g–1. What fraction of the photons is transmitted without interacting? What fraction of the incident photon energy is transmitted by the slab? How much energy is absorbed per second by the slab? What fraction of the transmitted energy is carried by the uncollided photons? If the mass energy-transfer coefficient is 0.0271 cm2 g–1, what fraction of the initial kinetic energy transferred to the electrons in the slab is emitted as bremsstrahlung?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD