The mass attenuation coefficient of copper is 0.0589 cm2 /g for 1.0-MeV photons. Find required thickness of the protective copper shield in order to achieve 50 % reduction of X-Ray radiation intensity. The density of copper is 8.9 g/cm3.
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3. The mass attenuation coefficient of copper is 0.0589 cm2
/g for 1.0-MeV photons. Find required thickness
of the protective copper shield in order to achieve 50 % reduction of X-Ray radiation intensity. The density
of copper is 8.9 g/cm3.
Kindly give elaborate and Explained answer
.
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- Q3. A dentist places the window of a 100-kVp (100-kV, peak voltage) X-ray machine near the face of a patient to obtain an X-ray of the teeth. Without filtration, considerable low-energy (assume 20 keV) X rays are incident on the skin. a) If the intervening tissue has a thickness of 5 mm, calculate the fraction of the 20- keV intensity absorbed in it. b) What thickness of aluminum filter would reduce the 20-keV radiation exposure by a factor of 10? c) Calculate the reduction in the intensity of 100-keV X rays transmitted by the filter. Given (Hen/phtisue @ 20 kev= 0.6 cm³/gWhat is the wavelength, in nm, of a 1.74-eV photon? Normal format with 4 SF. Hint: 1 eV = 1.60× 10-1⁹ J.1. A beam of monochromatic (single energy) photons are incident on a slab of aluminum with thickness of 3.5 cm. A slab of an unknown material with thickness of 2.5 cm is placed after the aluminum slab. The intensity of the beam is reduced to 20% of the incident beam. What is the linear attenuation coefficient µ (in cm-1) of the second slab? [µAl = 0.33 cm-1].
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