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johnq2k7
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Imagine that a point source is poisitioned at the origin of a sphere. Assume a monoenergetic isotropic photon source, emitting 10^9 photons*s^-1, each with a frequency of 2.7 x 10^20 Hz.
a.) Calculate the energy fluence rate [MeV cm^-2 s^-1] at a radial distance of 20 cm from the source. Calculate the corresponding photon fluence crossing a spherical surface elemental area (i.e a "curvy surface tile") at a radial distance of 20 cm over a time period of 10 seconds.
b.) Plot the photon fluence rate (i.e particles crossing a surface spherical elemental area per unit surface area (cm^-2) per unit time (s)) as a function of radial distance from the origin, and determine the slope of the curve. What is the common language description for this type of radiation reduction with distance?
c.) Calculate the number of photons reaching a detector subtending polar angles between 5 and 10 degrees, and azimuthal angle between 20 and 25 degrees, place at a radial distance of 5 cm, after a collection time of 1 minute.
Please help, I'm having a lot of difficulties approaching this question
a.) Calculate the energy fluence rate [MeV cm^-2 s^-1] at a radial distance of 20 cm from the source. Calculate the corresponding photon fluence crossing a spherical surface elemental area (i.e a "curvy surface tile") at a radial distance of 20 cm over a time period of 10 seconds.
b.) Plot the photon fluence rate (i.e particles crossing a surface spherical elemental area per unit surface area (cm^-2) per unit time (s)) as a function of radial distance from the origin, and determine the slope of the curve. What is the common language description for this type of radiation reduction with distance?
c.) Calculate the number of photons reaching a detector subtending polar angles between 5 and 10 degrees, and azimuthal angle between 20 and 25 degrees, place at a radial distance of 5 cm, after a collection time of 1 minute.
Please help, I'm having a lot of difficulties approaching this question