X ray intensity e) Looking at the graph below for a monoenergetic X-ray X-ray intensity 250 200 150 100 50 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Thickness of lead (t) i) What is meant by half-value thickness? ii) What would you estimate the half value thickness of the material to be? iii) If the X-ray had a higher range of energies explain what would happen to the half value thickness and provide your reasoning.
X ray intensity e) Looking at the graph below for a monoenergetic X-ray X-ray intensity 250 200 150 100 50 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Thickness of lead (t) i) What is meant by half-value thickness? ii) What would you estimate the half value thickness of the material to be? iii) If the X-ray had a higher range of energies explain what would happen to the half value thickness and provide your reasoning.
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For question ii) I received an answer of 0.75cm. But I'm a bit confused as would it not be 1 ? As the x ray intensity is 200, half of that is 100, if we go across from 100 and down we get 1, not 0.75. Please advise.
Transcribed Image Text:X ray intensity
e) Looking at the graph below for a monoenergetic X-ray
X-ray intensity
250
200
150
100
50
0
0
0.5
1
1.5 2
2.5
3
3.5
4
4.5
Thickness of lead (t)
i) What is meant by half-value thickness?
ii) What would you estimate the half value
thickness of the material to be?
iii) If the X-ray had a higher range of energies
explain what would happen to the half value
thickness and provide your reasoning.
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