Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
3 Cards in this Set
- Front
- Back
|
Explain why atoms bigger than Fe cannot produce energy by fusion |
• The binding energy per nucleon will decrease which is impossible unless external energy is supplied |
|
|
Explain what is meant by induced nuclear fission |
• a thermal neutron is absorbed by a nucleus resulting in then spliting into two daughter nuclei and me. Or more fast moving neutrons |
|
|
Explain the purpose of using a moderator and control rods in the core of a nuclear reactor |
• Moderator - fission produces fast moving neutrons - the Moderator slows down the fast moving neutrons as the neutrons collide with moderator material and lose some of the kinetic energy - slow moving neutrons have more chance of causing fission • control rods - absorb neutrons |
