Both are relevant.oksuz_ said:then we should consider the energy of the particle, not the threshold energy, should not we?
That is very closely linked to the threshold energy.oksuz_ said:And also Q-value enters the calculations, but it is, in this circumstances, negative.
The reaction Q value is a measure of the energy released or absorbed during a nuclear reaction. It is calculated by taking the difference between the total mass of the reactants and the total mass of the products, and converting it to energy using Einstein's famous equation, E=mc^2.
A higher reaction Q value indicates a more energetically favorable reaction, meaning the products are more stable than the reactants. This is because the excess energy released during the reaction helps to stabilize the products, making them less likely to undergo further reactions.
The threshold energy is the minimum amount of energy required for a nuclear reaction to occur. It is determined by the difference in energy between the initial and final states of the reaction, and it must be overcome in order for the reaction to take place.
A higher reaction Q value means that the reaction is more energetically favorable and therefore more likely to occur. By contrast, a reaction with a low or negative Q value would require an input of energy in order to take place.
Yes, the reaction Q value and threshold energy can be manipulated through various means such as altering the reactants, changing the conditions of the reaction, or using external sources of energy. This is the basis for nuclear energy production and nuclear weapons.