'Hariwan_ Radiation

BASICS OF RADIATION MEDICAL PHYSICS Lecture (3) medical physics College of medicine UOD Hariwan A. Mohammed  What we’ll cover... ◦ What is Radiation? ◦ Types ◦ Characteristics ◦ Radiation in medicine ◦ Radiation therapy ◦ X- ray beam ◦ Biological Effects of Radiat...

BASICS OF RADIATION MEDICAL PHYSICS Lecture (3) medical physics College of medicine UOD Hariwan A. Mohammed  What we’ll cover... ◦ What is Radiation? ◦ Types ◦ Characteristics ◦ Radiation in medicine ◦ Radiation therapy ◦ X- ray beam ◦ Biological Effects of Radiation ◦ Radiation protection What is Radiation? Transmission of energy via... Particle like electron , pronton has mass and charge Particles or Wave is the transmission of Waves energy..it has no mass and no charge. Electrogenic spectrum Not mechanical waves 4  Non-ionizing radiations NIR Refers to those electromagnetic radiation which are not energetic enough to cause ionization in matter. instead of producing charged ions when passing through matter, has sufficient energy only for excitation. *ionization: the ability to remove electron from the atom *Excitation: when electron change its state of NIR include: energy from lower energy to. Higher energy. long wavelength (> 100 nm), low photon energy (