1.3 KiB
1.3 KiB
| title | allDay | startTime | endTime | date | completed | type |
|---|---|---|---|---|---|---|
| Week 4 | false | 18:00 | 20:30 | 2024-09-17 | null | single |
Module 5.1 - Reactor Overview
Classifying Reactors
- Type of reaction
- Moderator material
- Coolant
- Generation (I-IV)
- Use Heat is created from fission. Kinetic energy from the decay products moving around is kind of what we see as "temperature".
Module 5.2 - Neutron Multiplication
Criticality Conditions
Neutron Economy
A successful reactor must
- Create enough excess neutrons to continue the reaction
- Not have so many neutrons that it becomes uncontrolled
- Consider material limits Letting too many neutrons leak is expensive. This is the gas!
Neutron Balance
Rate of increase = Production - absorbed - leakage 0 = Critical - Steady State - Static > 0 Supercritical - increasing - Kinetic/Dynamic < 0 Subcritical - decreasing - Kinetic/Dynamic
Neutron Life Cycle
- Birth
- Lifetime. Gets scattered around. Sneaky little fella
- Death 😬 Leaks from the system or is absorbed
Multiplication factor
k = \frac{\text{Number of neutrons in one generation}}{\text{Number of neutrons in preceding generation}}
Measures how many neutrons produced by each neutron born. There are more formulas in the slides. K can be based on material properties