WorksheetsNuclear Physics 8
Total questions: 10
Worksheet time: 5mins
How do neutrons diffuse in a reactor?
From low to high concentration
From high to low concentration
From top to bottom
From bottom to top
What happens to the diffusion coefficient if the moderator temperature is increased?
It increases slightly
It stays the same
It decreases
It increases a lot
What is the measure of how far neutrons travel in a straight line before they are absorbed?
Mean free path
Migration length
Diffusion length
Diffusion area
What is the measure of how far neutrons travel in a straight line during the slowing down (thermalisation) process?
Migration length
Diffusion area
Diffusion length
Mean free path
What is geometrical buckling a measure of?
Neutron absorption
Neutron leakage
Neutron thermalisation
Neutron speed
When is geometrical buckling equal to material buckling?
In a sub critical reactor
In a critical reactor
In a supercritical reactor
In a zero power reactor
Which type of fuel loading pattern is more favourable?
In-out
Out-in
Out-out
In-in
Which of these causes a more even power distribution/flattens neutron flux?
Negative feedbacks
Neutron reflectors
Control rods
Fuel depletion
What happens to the neutron flux in a reactor core if thermal power is increased?
It shifts from top to bottom
It shifts from bottom to top
It stays the same
It increases
What happens to the neutron flux around xenon-135?
It decreases
It increases
It stays the same
It moves
