8. If the thickness needed by a certain medium to reduce the intensity of incident x-rays...
8. What thickness of cadmium is needed to reduce the intensity of an incident beam of thermal neutrons to 10% of its original level? Assume a thermal neutron cross section of 2520 barns, an atomic mass of 112.411 amu and a specific gravity of 8.65.
A beam of 0.4 MeV y-rays with an intensity 108y-rays/cm-s is incident on thin foil of target material having thickness 0.2 cm. 95 % of photons pass through the foil without making any interactions. Total energy deposited in the foil is 1.5x10 MeV/cma-s. Determine attenuation and linear absorption coefficients of target material.
Beta rays incident on a specific material of mass thickness attenuation factor t = 0.33 g/cm2, and a mass thickness T = 0.18 g/cm2 . The percentage of radiation passes through the material (i.e., I(T)/I0 % ) is (two significant figures). Use equation 1 in the manual.
Beta rays incident on a specific material of mass thickness attenuation factor t = 0.25 g/cm2, and a mass thickness T = 0.13 g/cm2 . The percentage of radiation passes through the material (i.e., I(T)/I0 % ) is (two significant figures). Use equation 1 in the manual. I got 97% apparently thats wrong.
Calculate the attenuation coefficient of a material if the intensity of the X-ray beam is reduced to half as it passes through a thickness of 1 cm of the material.
Gamma-rays (Y-rays) are highly energetic electromagnetic radiation that are emitted when the nuclei undergo transitions in the energy levels. The energy of the y-rays is upward of 100 keV. Due to the high energy, the rays are not appreciably absorbed by even several centimeters of materials such as concrete or wood. However, dense metals such lead, are effective Y-ray absorbers. The amount y-rays that are absorbed depends on the material and the energy of the gamma-rays, the higher the energy,...
A beam of a single energy 7-ray is attenuated to 37% of its original intensity by passing ensi e aluminun is (a) What is the linear attenuation coefficient μ? (b) What is the mass attenuation coefficient? (c) What is the thickness required to reduce the beam intensity to 0.1% of its original value?
The mass attenuation coefficient for 200 keV x-rays in iron is .1460cm2/g. The density of iron is 7.874 g/cm3. If 104200 keV x-ray photons are incident on an iron plate 1.50 cm thick, how many x-ray photons will pass through the plate
The X-ray experiment in the 1st year laboratory involves a high voltage (up to 28 kV) source of electrons which hit a target made of copper. This causes the electrons to decelerate, which results in the emission of "Bremstrahlung" X-rays, as well as characteristic peaks. The maximum X-ray energy is 28 keV. The door of the X-ray set is made of leaded glass. This attenuates the X-rays, according to the following equation: lo exp (-ut) Here l is the transmitted...
a) Define the terms linear ottenuation coefficient and mass attenuation coefficient and state the 6. units of measurement of each quantity. b) A layer of homogeneous material with physical density p and linear attenuation coefficient μ has uniform thickness t.A narrow beam of monoenergetic x-radiation is incident on this layer at right angles. State the relationship between the transmitted intensity Ivan and the incident e. Hence obtain an expression for the attenuation A defined as A = 1 intensity c)...