All Questions
11
questions
6
votes
3
answers
181
views
Why protons and neutrons don't have less mass than their constituents?
A system of gravitational attracted objects weight less than the sum of their individual masses because it needs energy to move them apart and overcome the gravitational attraction. Same is true for ...
- 793
0
votes
0
answers
27
views
Tightly bound energy configuration for nucleons?
In fusion, why are nucleons of the product nucleus tightly bound and in a lower energy configuration than the nucleons in the reactant nuclei? I think the reason a large amount of energy is released ...
1
vote
0
answers
57
views
Negative potential energy
In fusion of hydrogen into helium, hydrogen has negative potential energy which adds up and results in a mass defect..
Doubts:-
Why is there negative potential energy between the nucleons in a ...
- 21
1
vote
2
answers
440
views
Nuclear fusion mass defect and energy production
In researching the topic of nuclear fusion, I have a few doubts related to the mass defect, 'negative' potential energy and resultant energy released as a by-product of nuclear fusion.
When two ...
- 23
0
votes
0
answers
23
views
Why is internal energy of nucleons ∝ to binding energy? [duplicate]
In fusion , as two light nuclei fuse , the relative binding energy experienced by each nucleon is increased and hence the internal energy of the nucleons is decreased which by E=mc² causes a decrease ...
0
votes
1
answer
110
views
Mass: a form of energy [closed]
Einstein's $E=mc^2$ and law of conservation of energy implies that mass is a form of energy, but if it is a form of energy then why can we freely interact with mass while the other forms of energy are ...
0
votes
1
answer
106
views
Mass energy equivalence, binding energy and chemical reactions [duplicate]
I recently was nuclear physics there I learned that the the actual mass of a nucleus is less than what we expect it to be (simply adding the masses of the nucleons). It is due to the release of ...
2
votes
2
answers
317
views
What is more massive, Proton, standard Hydrogen?
If you consider the classical states of hydrogen, one in which the electron is rotating at an orbital distance of $r$ and then take $\lim_{r\to\infty}$ one obtains that the $r_\infty$ state has more ...
- 41
2
votes
2
answers
519
views
Does the strong force increase or decrease with aligned spins?
The deuterium exists only with the proton and neutron of aligned spin, which suggests that the residual strong force is greated with aligned spins, i.e. the binding energy is greater if the spins are ...
- 2,617
2
votes
2
answers
235
views
How does Pauli exclusion principle cause the coupling term in Weizsäcker formula?
Consider the pairing term in Weizsäcker formula. Here it is claimed that:
Due to the Pauli exclusion principle the nucleus would have a lower
energy if the number of protons with spin up were ...
- 2,617
0
votes
0
answers
59
views
Difference between Annihilation and Mass defect
I just need to clear something up.
As I understand it, the mass defect of a system is the result of a loss of potential energy of a system. So (for example) when a nucleus forms, energy is released, ...
- 1,720