Radiation Flashcards
1
Q
Alpha radiation
A
The atom becomes positively charged
2
Q
Radioactive tracer (medical)
A
Short 1/2 life and emit y rays
3
Q
Ionisation is
A
An atom gaining of loosing an electron (alpha-very high, beta- high-ish, gamma-low)
4
Q
Natural background radiation
A
Cosmic rays from the sun and radon gas from the ground
5
Q
Man made background radiation
A
Some medical treatments and nuclear power generators radiation
6
Q
Alpha particle
A
Helium nucleus and slow
7
Q
Beta particle
A
1 electron and fast
8
Q
Gamma particle
A
Electromagnetic waves and very fast
9
Q
Beta penetration
A
Stopped by 1m of air, 3mm of aluminium or 0.01mm of lead
10
Q
Alpha penetration
A
Stopped by 10cm of air, 5mm of aluminium, 0.01mm of lead, paper or a hand
11
Q
Gamma penetration
A
Stopped by 1km of air or 10cm of lead
