Summary
Summary AQA A Level Physics Nuclear Physics revision notes
- Module
- Nuclear Physics
- Institution
- AQA
In depth notes on nuclear physics including examples and diagrams.
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~Apha <
Nuclear
Decay Equations
Lightinsidesource
i
2 proton 2 neutron 4 4 a Apha -- 4
,
& He
Sphere
&
Most ionising 2 2 24/
Mine
penetrating
Least ①
100 % of the
light incident the inside of the
Am
+ He ord
by thin paper air (few cm)
Absorbed & is on sphere 95
2
Slowest
-
*
, Intensity Wm- power per unit area
(proton >
BetaB minus & plus
J z
fast
moving
electron
B 2 The sphere above
Intensity to
·
,
I
ionising (penetrating
-
Santi
-
·
medium Areact small 2 Cu
4Tr
absorbed foil
by huminium
-
a
Sphere
I
and air (few metres) Beat
2
Area of
Gamma J &
j &
big
↑
- 4π(2r) 124
2
2r Sphere I C
electromagnetic ware
2
16 r
·
- ↓
52 ↑ neutri
most
penetrating
·
Electron
captiveV
least
ionising
·
lead/ concrete Intensity of small here 4 r2
-
thick to 16r2
absorbed
by
: 124 124
sp
· =
Rutherfords Alpha Scattering experiment 53
Intensity of
large Sphere by
-
↳ electrostatic
4
interaction
G2 thi Il
D
vacuum
X
v 4r2 -
↓
-
Nuclear
Physics
44(2r)
2
gold foil
pha
i 16 Tr2 lo I 4
-
2w
-
S
3r 36 Tr24(3r)2 19
& -
I j
speed
4π(4r) Nuclear Radivs
2
464/r
J
- · / 16
&
I
H CS
-
M
-
Fluorescent link
ing Intensity &
T If
you
double distance of
↑
&
FB M
↑ X then the
8 Eating
radioactive source
Yor quarter intensity
-
I
Has
2
③
Spee
Fa F
force
① Most alpha particles passed straight through the gold I
foil is
acting At this point fa is
this
way in the opposite
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