La liaison nucléaire est le phénomène qui assure la cohésion d'un noyau atomique.Le noyau atomique est composé de protons de charge électrique positive, et de neutrons de charge électrique nulle. La répulsion coulombienne tend à séparer les protons. C'est l'interaction forte, portée par les gluons, qui permet d'assurer la stabilité du noyau.

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  • La liaison nucléaire est le phénomène qui assure la cohésion d'un noyau atomique.Le noyau atomique est composé de protons de charge électrique positive, et de neutrons de charge électrique nulle. La répulsion coulombienne tend à séparer les protons. C'est l'interaction forte, portée par les gluons, qui permet d'assurer la stabilité du noyau.
  • En física y en química, la energía de enlace es la energía necesaria para descomponer un objeto en cada una de sus partes. La energía de enlace nuclear es la diferencia entre la energía del núcleo de un elemento y la energía del mismo número de protones y neutrones consideradas individualmente.Está dada por la interacción nuclear fuerte y se puede medir por la cantidad de energía necesaria para descomponer el núcleo en sus protones y neutrones separados.Se puede categorizar la masa de un cuerpo como un tipo de energía, por lo tanto al liberarse la energía de enlace nuclear entre dos partículas, éstas pierden una parte de su masa, la masa perdida es realmente poca. Es decir, la unión de dos partículas tiene una masa menor comparada con la masa de dichas partículas medida individualmente.
  • Nuclear binding energy is the energy required to split a nucleus of an atom into its component parts. The component parts are neutrons and protons, which are collectively called nucleons. The binding energy of nuclei is always a positive number, since all nuclei require net energy to separate them into individual protons and neutrons. Thus, the mass of an atom's nucleus is always less than the sum of the individual masses of the constituent protons and neutrons when separated. This notable difference is a measure of the nuclear binding energy, which is a result of forces that hold the nucleus together. Because these forces result in the removal of energy when the nucleus is formed, and this energy has mass, mass is removed from the total mass of the original particles, and the mass is missing in the resulting nucleus. This missing mass is known as the mass defect, and represents the energy released when the nucleus is formed. The term nuclear binding energy may also refer to the energy balance in processes in which the nucleus splits into fragments composed of more than one nucleon, and in this case the binding energies for the fragments, as compared to the whole, will be higher. If new binding energy is available when light nuclei fuse, or when heavy nuclei split, either of these processes result in releases of the binding energy. This energy, available as nuclear energy, can be used to produce electricity (nuclear power) or as a nuclear weapon. When a large nucleus splits into pieces, excess energy is emitted as photons (gamma rays) and as kinetic energy of a number of different ejected particles (nuclear fission products).The nuclear binding energies and forces are on the order of a million times greater than the electron binding energies of light atoms like hydrogen.The mass defect of a nucleus represents the mass of the energy of binding of the nucleus, and is the difference between the mass of a nucleus and the sum of the masses of the nucleons of which it is composed. Determining the relevant nuclear binding energy encompasses three steps of calculation, which involves the creation of mass defect by removing the mass as released energy.
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  • Category:Nuclear binding energy
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  • énergie de liaison nucléaire
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rdfs:comment
  • La liaison nucléaire est le phénomène qui assure la cohésion d'un noyau atomique.Le noyau atomique est composé de protons de charge électrique positive, et de neutrons de charge électrique nulle. La répulsion coulombienne tend à séparer les protons. C'est l'interaction forte, portée par les gluons, qui permet d'assurer la stabilité du noyau.
  • Nuclear binding energy is the energy required to split a nucleus of an atom into its component parts. The component parts are neutrons and protons, which are collectively called nucleons. The binding energy of nuclei is always a positive number, since all nuclei require net energy to separate them into individual protons and neutrons. Thus, the mass of an atom's nucleus is always less than the sum of the individual masses of the constituent protons and neutrons when separated.
  • En física y en química, la energía de enlace es la energía necesaria para descomponer un objeto en cada una de sus partes.
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  • Liaison nucléaire
  • Energía de enlace nuclear
  • Nuclear binding energy
  • Ядрена енергия
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