What does nucleosynthesis mean?

Definitions for nucleosynthesis
ˌnu kli oʊˈsɪn θə sɪs, ˌnyu-nu·cle·osyn·the·sis

This dictionary definitions page includes all the possible meanings, example usage and translations of the word nucleosynthesis.

Princeton's WordNet

  1. nucleosynthesisnoun

    (astronomy) the cosmic synthesis of atoms more complex than the hydrogen atom

Wiktionary

  1. nucleosynthesisnoun

    Any of several processes that lead to the synthesis of heavier atomic nuclei.

Wikipedia

  1. Nucleosynthesis

    Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons (protons and neutrons) and nuclei. According to current theories, the first nuclei were formed a few minutes after the Big Bang, through nuclear reactions in a process called Big Bang nucleosynthesis. After about 20 minutes, the universe had expanded and cooled to a point at which these high-energy collisions among nucleons ended, so only the fastest and simplest reactions occurred, leaving our universe containing hydrogen and helium. The rest is traces of other elements such as lithium and the hydrogen isotope deuterium. Nucleosynthesis in stars and their explosions later produced the variety of elements and isotopes that we have today, in a process called cosmic chemical evolution. The amounts of total mass in elements heavier than hydrogen and helium (called 'metals' by astrophysicists) remains small (few percent), so that the universe still has approximately the same composition. 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 ejected through stellar winds and explosions. The neutron capture reactions of the r-process and s-process create heavier elements, from iron upwards. Supernova nucleosynthesis within exploding stars is largely responsible for the elements between oxygen and rubidium: from the ejection of elements produced during stellar nucleosynthesis; through explosive nucleosynthesis during the supernova explosion; and from the r-process (absorption of multiple neutrons) during the explosion. Neutron star mergers are a recently discovered major source of elements produced in the r-process. When two neutron stars collide, a significant amount of neutron-rich matter may be ejected which then quickly forms heavy elements. Cosmic ray spallation is a process wherein cosmic rays impact nuclei and fragment them. It is a significant source of the lighter nuclei, particularly 3He, 9Be and 10,11B, that are not created by stellar nucleosynthesis. Cosmic ray spallation can occur in the interstellar medium, on asteroids and meteoroids, or on Earth in the atmosphere or in the ground. This contributes to the presence on Earth of cosmogenic nuclides. On Earth new nuclei are also produced by radiogenesis, the decay of long-lived, primordial radionuclides such as uranium, thorium, and potassium-40.

ChatGPT

  1. nucleosynthesis

    Nucleosynthesis refers to the process by which heavier atomic nuclei are produced from lighter ones due to cosmic ray interactions, thermal agitation, or supernova explosions. These processes lead to the creation of new elements and isotopes, often releasing or absorbing energy in the process. Nucleosynthesis is responsible for the generation of elements in the Universe beyond hydrogen and helium.

Wikidata

  1. Nucleosynthesis

    Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons, primarily protons and neutrons. The first nuclei were formed about three minutes after the Big Bang, through the process called Big Bang nucleosynthesis. It was then that hydrogen and helium formed that became the content of the first stars, and is responsible for the present hydrogen/helium ratio of the cosmos. With the formation of stars, heavier nuclei were created from hydrogen and helium by stellar nucleosynthesis, a process that continues today. Some of these elements, particularly those lighter than iron, continue to be delivered to the interstellar medium when low mass stars eject their outer envelope before they collapse to form white dwarfs. The remains of their ejected mass form the planetary nebulae observable throughout our galaxy. Supernova nucleosynthesis within exploding stars, is responsible for the abundances of elements between magnesium and nickel. Supernova nucleosynthesis is also thought to be responsible for the creation of elements heavier than iron and nickel, in the last few seconds of a type II supernova event. The synthesis of these heavier elements absorbs energy as they are created, from the energy produced during the supernova explosion. Some of those elements are created from the absorption of multiple neutrons in the period of a few seconds during the explosion. The elements formed in supernovas include the heaviest elements known, such as the long-lived primordial element radionuclides uranium and thorium.³910,11

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Numerology

  1. Chaldean Numerology

    The numerical value of nucleosynthesis in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of nucleosynthesis in Pythagorean Numerology is: 1

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"nucleosynthesis." Definitions.net. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.definitions.net/definition/nucleosynthesis>.

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