Physics A-Level
Neutron absorption cross-section
What Neutron absorption cross-section means in Physics A-Level, as defined for AQA.
Definition of Neutron absorption cross-section
Check what you remember
Read the wording for your board, then hide it and explain Neutron absorption cross-section in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A property that must be high in control-rod materials and low in moderators and ideally coolants, relating material choice to each component's function.
Topics that use Neutron absorption cross-section
- Induced fission (A-level only) (AQA A-Level)
Related terms
- Balance of neutron production and absorption
- Chain reactions
- Control rods
- Coolant
- Induced fission
- Moderator
- Neutron moderation and chain reactions
- Relationship between nuclear mass and energy transfer
Using Neutron absorption cross-section in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge