Physics 1.2 Stable and Unstable Nuclei Flashcards
1
Q
What is the role of the strong nuclear force?
A
The strong nuclear force plays a significant role in keeping the nucleus stable. It has a short-range attraction up to approximately 3fm, and a very short range repulsion closer than approximately 0.5fm.
1fm = 1 * 10^-15m
2
Q
What is the equation for alpha decay?
A
A -> A-4 + 4
Z X -> Z-2 Y + 2 a
3
Q
Why was the existance of the neutrino hypothesised?
A
The existance of the neutrino was hypothesised to account for the conservation of energy in beta decay.
4
Q
What is the equation for beta-minus decay?
A
A -> A + 0
Z X -> Z+1 Y + -1 +β- + ν-e
