Attenuation With Matter

Question 1

Describe the process of photoelectric absorption

Answer 1

Orbital e- ejected as x-ray photon transfers KE to orbital e-
If the energy transferred is sufficient enough to overcome binding energy of orbital e- it gets ejected
Cascade event - e- want to move closer to the nucleus to have a greater binding energy, Have more potential energy being further away, Excess is released electromagnetic radiation
Characteristic emr takes place

Question 2

What is photoelectric absorption

Answer 2

Interaction between x-ray photon and inner orbital electron