types of radiation Flashcards
(17 cards)
1
Q
What is the charge of an alpha particle?
A
+2
2
Q
What is an alpha particle?
A
2 protons, 2 neutrons
3
Q
What is a beta particle?
A
an electron
4
Q
What is the charge of a beta particle?
A
-1
5
Q
What is a gamma?
A
electromagnetic wave
6
Q
What is the charge of gamma?
A
0
7
Q
penentration of beta
A
stopped by a few mm of aluminium
8
Q
penetration of alpha
A
stopped by paper
9
Q
penetration of gamma
A
reduced by few mm of lead
10
Q
ionisation of alpha
A
high
11
Q
ionisation of beta
A
medium
12
Q
ionisation of gamma
A
low
13
Q
what are alpha, beta and gamma?
A
types of nuclear radiation
14
Q
what happens to the structure of an atom when its ionised?
A
it loses or gains electrons
15
Q
alphas range in air
A
a few cm
16
Q
betas range in air
A
few 10s of cm
17
Q
gammas range in air
A
infinite
