five types of interaction of radiation with matter simplified https://youtu.be/aMD5X2TX-6A

1. Dr. Md. Suzon Islam
MBBS, FCPS part 2 trainee
Dept. of Radioloy and Imaging
Dhaka Medical College and Hospital
Presentation on
Interaction of radiation with matter

2. Types of X-Ray
..Brems radiation
..Characteristic radiation

5. Types of interaction
1..Photoelectric interaction
2..Coherent scattering
3..Compton interaction
4..Pair production
5..photo disintegration

6. p+n
No interaction
Compton&coherent
PEI
Pair&photodisintegration

7. Coherent scattering:
 Site: firmly bound electron
 Cause: low energy x-ray photon
 Effect:
• vibration of electron
• changing direction
• no change in wavelength frequency or energy
• small amount of heat can be released
• no ionization

8. Compton interaction
 Site - outer shell
 Cause: density of electron

9. Photoelectric interaction:
 Site: inner shell
 Cause: sufficient energy to overcome the binding
energy of electron
 effect:
• production of photoelectron
• production of characteristic radiation

10. Pair production:
 Site: nucleus
 Cause: high energy 1.02mv
 effect: production of positron and negatron

11. Photodisintegration:
 Site: nucleus
 Cause: higher energy 7-15mv
 Effect: destruction of nucleusproduction of alpha
particle neutron proton

12. Summary:
Empty space: no interaction
Outer shell: low energy- coherent
sufficient energy- Compton
Inner shell: Photoelectric interaction
Nucleus: high energy(1.02mv)- pair production
higher energy(>7mv)- photodisintegration

13. THANK YOU