Radiation definitions Flashcards
1
Q
Tera
A
X10 12
2
Q
Giga
A
X10 9
3
Q
Mega
A
X10 6
4
Q
Kilo
A
X10 3
5
Q
Centi
A
X10 -2
6
Q
Milli
A
X10 -3
7
Q
Micro
A
X10 -6
8
Q
Nano
A
X10 -9
9
Q
Pico
A
X10 -12
10
Q
Alpha atom
A
Helium nucleus, slowest of all, heaviest, least penetrating, highest ionising
11
Q
Beta
A
Fast moving electron, middle speed,
12
Q
Gamma
A
High frequency waves, slowest of all, least penatrating, most ionising
13
Q
Ionising
A
The gain or loss of an electron
14
Q
Alpha charge
A
+2
15
Q
Beta charge
A
-1
16
Q
Gamma charge
A
0
17
Q
What stops alpha
A
Sheet of paper
18
Q
What stops beta
A
5mm thick aluminium
19
Q
What stops gamma
A
2cm thick lead
20
Q
A
21
Q
Absorbed dose formula
A
D=E/m
22
Q
Absorbed dose unit
A
Gray (Gy)
23
Q
Energy absorbed umit
A
Joule (J)
24
Q
Equivalent dose formula
A
H=DXwR
25
Weighting factor
n/a
25
26
Equivalent dose rate
H (with dot on top)= H/t
26
Equivalent dose rate
Sieverts per second (SVs-1)
27
Benefits of nuclear fusion
No radiation wasted, fuel is cheap and abundant.
28
Problems with nuclear fusion
Needs tons of energy, needs to be contained in magnetic field
29
Benefits of nuclear fission
Not much carbon dioxide is produced, less fuel needed.
30
