TYPES OF IONIZING RADIATION AND RADIATION DOSE

alpha particle

is a helium nucleus that contains two protons and two neutrons.

beta particle

is an electron emitted from the nucleus of a radioactive atom.

alpha particles and beta particles

what are the two main types of particulate radiation?

particulate radiation and electromagnetic radiation

Ionizing radiation can be classified into two categories, what are they?

particulate radiation

a radiation distinct from x-rays and gamma rays; examples include alpha particles, electrons, neutrons, and protons

electromagnetic radiation

an oscillating electric and magnetic fields that travel in a vacuum with the velocity of light. it includes x-rays, gamma rays, and some non-ionizing radiation.

non-ionizing radiation

what type of radiation used in diagnostic ultrasonography and in magnetic resonance imaging?

mass, energy, velocity, charge, and origin

what are the 5 physical characteristics of ionizing radiation?

mass and charge

how does beta particles differ from alpha particles?

x-rays and gamma rays

what are the types of electromagnetic radiation?

nucleus/radioactive nuclei

where does a gamma ray comes from?

electron cloud

where does a x-ray comes from?

R

symbol for Exposure

rad

symbol for absorbed dose

rem

symbol for effective dose

Gya

symbol for air kerma

Gy1

symbol for gray

Sv

symbol for sievert

Bq

symbol for becquerel

Ci

symbol for radioactivity

absorbed dose

is the energy transferred from ionizing radiation per unit mass of irradiated material

effective dose

is a method of converting a nonuniform radiation dose, as when a protective apron is worn, to a dose, with respect to risk, as if the whole body were exposed

equivalent dose

is used to assess how much biological damage is expected from the absorbed dose. (Different types of radiation have different damaging properties.)

gray (Gy1)

radiation dose is measured in what SI unit?

two

how many neutrons and protons does an alpha particles have?

one unit of positive and negative charge

how many charge does a beta particle has?

nuclei of radioactive atom

where does a beta particle originated from?

electrons

it exist in shells outside the nuclei of all atoms

0

how many particle charged for gamma ray

photons

X-rays and gamma rays are often called