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A version of the periodic table indicating the origins – including stellar nucleosynthesis – of the elements. The most important reactions in stellar nucleosynthesis: Hydrogen fusion: Deuterium fusion; The proton–proton chain; The carbon–nitrogen–oxygen cycle; Helium fusion: The triple-alpha process; The alpha process; Fusion of ...
Stars fuse light elements to heavier ones in their cores, giving off energy in the process known as stellar nucleosynthesis. Nuclear fusion reactions create many of the lighter elements, up to and including iron and nickel in the most massive stars. Products of stellar nucleosynthesis remain trapped in stellar cores and remnants except if ...
A version of the periodic table indicating the origins – including big bang nucleosynthesis – of the elements. All elements above 103 are also man-made and are not included. Big Bang nucleosynthesis produced very few nuclei of elements heavier than lithium due to a bottleneck: the absence of a stable nucleus with 8 or 5 nucleons. This ...
Supernova nucleosynthesis is the nucleosynthesis of chemical elements in supernova explosions.. In sufficiently massive stars, the nucleosynthesis by fusion of lighter elements into heavier ones occurs during sequential hydrostatic burning processes called helium burning, carbon burning, oxygen burning, and silicon burning, in which the byproducts of one nuclear fuel become, after ...
The iron peak is a local maximum in the vicinity of Fe (Cr, Mn, Fe, Co and Ni) on the graph of the abundances of the chemical elements. For elements lighter than iron on the periodic table, nuclear fusion releases energy. For iron, and for all of the heavier elements, nuclear fusion consumes energy.
By fusing together plasma of two light nuclei (in this example, two atoms of the hydrogen isotope deuterium), the strong nuclear force binds together these isotopes into Helium-3 and releases ...
Nuclear fusion uses lighter elements, such as hydrogen and helium, which are in general more fusible; while the heavier elements, such as uranium, thorium and plutonium, are more fissionable. The extreme astrophysical event of a supernova can produce enough energy to fuse nuclei into elements heavier than iron.
A version of the periodic table indicating the origins – including cosmic ray spallation – of the elements. All elements above 103 ( lawrencium ) are also man-made and are not included. Cosmic ray spallation is thought to be responsible for the abundance in the universe of some light elements [ 1 ] — lithium , beryllium , and boron —as ...