Ionising Radiation Folio

IONISING
RADIATION

by : Nik Nur Irdina &
Amrina Solehah

Natural Source

Examples of natural source

Radiation from Radiation from
space the earth

Radiation from
building
matery

Low levels of ionizing radiation include radioactive elements that are

naturally in our body





ex:- a very small fraction of the
radiation absorbed by our bodies potassium in our bodies is
(doses) is usually small. radioactive.

Space radiation

Cosmic Radiation


Source of background radiation
high-energy protons and atomic
nuclei that move through space at react with the earth’s atmosphere to
produce secondary radiation which
nearly the speed of light. They
originate from the Sun, from outside reaches the earth.
of the Solar System in our own galaxy,

and from distant galaxies



Radiation dose will vary with altitude


MORE intense in the upper atmosphere
and MOST intense in deep space.
Higher altitudes mean greater
exposure to cosmic radiation.

Background
Radiation

Background Radiation

radon gas

Radon is a radioactive gas that forms
naturally from the radioactive decay
of uranium and thorium.
- Present in underground in small
amount of soil and rocks.

the effect of radon gas :

source: article from Stoney
Creek Contracting

how radon gas enter our house :

Background Radiation

medical (x-ray)

the amount of radiation from one adult chest x-ray
(0.1 mSv) is about the same as 10 days of natural
background radiation that we are all exposed to
as part of our daily living.

example : CT Scanner source: article by American
Cancer Society

Background Radiation

food

Radium
: commonly found in food containing
potassium.
Example : all food, particularly food high in
potassium like bananas, carrots, potatoes,
leafy vegetables, salt, peanuts and red meat.

how food irradiated:

FOOD IRRADIATION:

after food irradiated:

source: article by FDA