Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
Summary
Summary Notes on AQA A-level Physics: Particles
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Course
Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
Institution
AQA
Summary of the content of Particle Physics ranging from Fundamental Forces to Feynman Diagrams. The notes were written according to the most recent specification. They include in depth explanations of each point in the spec, diagrams and key definitions as well as past paper questions with model an...
Unit 1 PHYA1 - Particles, Quantum Phenomena and Electricity
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use of
types radiation en
kinetic
·high energy
3last put
themaydangerous
the
I
j . somewhat
strongly
ionising
3
. most
dangerous a
at
distance
least
ionising
·
penetrating
most
·
·
gamma-
unstable Alpha emission
alpha-heavy nuclei
·
· -
proton rich ↳"The Ra 6 +
·
ip ->
neutron rich
The Beta Emission
neutrino
beta +ve
plus:p after:atomic number-1,
+
-n +
B mass number the same
be the
neutrino-neutral, is
it needed to
carry away extra
ant: mutrino
energy
so the
that total
energy will
always same.
beta -p B ve
-
+
minus:n
+
after: 2+1. A the same
,Detection devices
I
, Annihilation and Pair Production
I because
in directions
opposite
the
because
opposite cha
of
the
of
particles
Example questions:
The nucleus will be unstable
undergo
and beta
plus
A will turn into and
emission.
proton
a neutron
a result.
MeV position) position as a
1) 2 MeV r, New
Selectron)
1. In
pair production an electron is also
2) 3 2 1.675x10 27 (3x168)2 1.5075x10%)
-
= =
x +
created.
2. No involved
photon is in
position emission
neutrino is emitted production
+ no in
pair
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