Radiation Flashcards
1
Q
what is alpha radiation
A
unstable mass is ejecting alpha particles to stabilise
equivalent to helium (4a2)
2
Q
what is beta radiation
A
either +ve or -ve e.g. positron being emitted or electron being emitted
3
Q
what is gamma radiation
A
not a particle, stabilising energy state after alpha/beta radiation
4
Q
what are some half life
examples
A
0.5 –> 0.25 –> … –> 6.25
5
Q
what are the dosage types
A
absorbed = mJ/kg of tissue
equivalent = tissue weighting adjusted
effective = sum of equivalent does measures in mGy or J/kg
6
Q
what is mGy and convert it to J/kg
A
milligray, 0.001 J/kg
1 J/kg = 1000 mGy
