Sieverts

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FOR PAGE 25 and Page 27 of booklet (READ and DISCUSS)

There exist three major types of radiations emitted by the radioactive particles namely:

  • Alpha
  • Beta
  • Gama

Alpha Rays

Alpha rays are the positively charged particles. Alpha-particle is highly active and energetic helium atom that contains two neutrons and protons.  These particles have the minimum penetration power and highest ionization power. 

Beta Rays

Beta particles are extremely energetic electrons that are liberated from the inner nucleus. They bear negligible mass and carry the negative charge. A neutron in the nucleus splits into a proton and an electron on the emission of a beta particle. Hence, it is the electron that is emitted by the nucleus at a rapid pace. Beta particles have a higher penetration power when compared to alpha particles and can travel through the skin with ease. 

Gamma Rays

The waves arising from the high-frequency end of the electromagnetic spectrum that has no mass are known as gamma rays. They hold the highest power of penetration. They are the most penetrating but least ionizing and very difficult to resist them from entering the body. 

The below table describes the characteristics of beta, alpha and gamma radiations and compares the masses and charges of the three rays.




CLICK HERE TO PERFORM THE EXPERIMENT - FOR PAGE 27 OF BOOKLET



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