(4)
Neutrons
(a)
Neutrons induce radioactivity
(b)
Neutrons cause ionization through a secondary
process
The chain reaction and nuclear reactors
Radioactive decay
D.
a.
Half life
b.
Measuring radioactivity
(1)
Curie
(2)
Roentgen
(3)
Rad
(4)
Rep
(5)
Rem
(6)
Relative biological effectiveness
Biological effects of radiation
1.
Mechanism of radiation injury to the cells
a.
Ionizing radiations strike water molecules in the cell
causing the formation of hydrogen dioxide and hydrogen
peroxide
b.
Hydrogen dioxide and hydrogen peroxide break down enzymes
which control factors for cell division
c. ,Radiation causes protein damage in cytoplasm
d.
Damage may also be done to the proteins in cell walls
e.
Radiations sometimes split chromosomes in the cell