How Does Water Layer Thickness Affect Radiation Dose from 2-MeV Photons?

In summary, the thickness of the water layer has a significant impact on the radiation dose received from 2-MeV photons. As the water layer thickness increases, the amount of radiation absorbed also increases, leading to a higher radiation dose. This is because the water layer acts as a shield, absorbing and scattering the photons before they reach the target. Understanding this relationship between water layer thickness and radiation dose is crucial in radiation therapy and other applications where precise dosing is necessary.
  • #1
ivan ardila
A layer of water 1 mm thick between two equilibrium-thickness layers of Teflon
is irradiated by 2-MeV photons.
(a) From Burlin theory calculate the approximate average dose in the water
(EWaitfc thre) collision kerma in the adjacent Teflon is 10 Gy. Take pen/
p = 0.0225 cm2/g for Teflon, use Eq. (10.47) as amended by Janssens et
al. (1974) to obtain 0, assume a diffuse electron field, and neglect y-ray
attenuation.
-W hat are the small-cavity (B-G) and large-cavity limiting values for
DW,,,,?
 
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  • #2
Welcome Ivan, and thank you for posting in New Member Introductions ONLY - No Questions. :smile:

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