1 + 2 (1st)

Question 1

What is radiation?

Answer 1

the release (emission) and transfer (propagation) of energy (in the form of waves or particles)

Question 2

radiation process

Answer 2

Source - Radiation - Irradiated target

Question 3

3 factors that may occur when radiation interacts with a matter, causing the intensity to decrease

Answer 3

Energy absorption, reflection and dispersion

Question 4

What is attenuation law?

Answer 4

the intensity of radiation

• changes proportionally to the incident intensity
• decreases exponentially with the thickness of layer

Question 5

What does the validity of the attenuation law depend on?

Answer 5

Interaction between matter and radiation

Question 6

What is differential form of attenuation law? Give formula

Answer 6

It describes the decrease in intensity of the radiation is proportional to the thickness of the absorber (∆x) and the initial intensity (J)

∆J/∆x = -µ*J

Question 7

What is integral form of attenuation law? Give formula

Answer 7

It describes the decrease in intensity of the radiation form as a function of layer thickness

J = Jo * e^(-µx)

Question 8

What is the attenuation coefficient?

Answer 8

the inverse of the distance that reduces the intensity by a factor of 1/e

Question 9

classifications of radiation

Answer 9