Absorption and Attenuation (2)

Question 1

Linear Attenuation

Answer 1

As radiation travels through a material it decreases the overall intensity of the radiation beam.

Question 2

What is the Linear Absorption Coefficient?

Answer 2

Depends on the material density and energy of the x or gamma ray.

Indicates that there is a constant fractional decrease in radiation intensity due to material thickness.

Question 3

What occurs for Material Absorption and shielding to occur?

Answer 3

Radiation interacts with the matter it has encountered.

Question 4

The more dense the material the ___ _____ will occur

Answer 4

more absorption will occur

Question 5

What is a Value Layer?

Answer 5

The effectiveness of a material to absorb or shield radiation reducing its intensity. (attenuation factor)

Question 6

Half-Value Layer

Answer 6

Thickness required of a material to reduce initial radiation intensity by half the original

Question 7

Tenth-Value Layer

Answer 7

Thickness required of a material to reduce initial radiation intensity by 1/10 the original.