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  2. Radioactive decay - Wikipedia

    en.wikipedia.org/wiki/Radioactive_decay

    Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay.

  3. Decay heat - Wikipedia

    en.wikipedia.org/wiki/Decay_heat

    Decay heat is the heat released as a result of radioactive decay. This heat is produced as an effect of radiation on materials: the energy of the alpha, beta or gamma radiation is converted into the thermal movement of atoms. Decay heat occurs naturally from decay of long-lived radioisotopes that are primordially present from the Earth's formation.

  4. Alpha decay - Wikipedia

    en.wikipedia.org/wiki/Alpha_decay

    Alpha decay or α-decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or "decays" into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two.

  5. Earth's internal heat budget - Wikipedia

    en.wikipedia.org/wiki/Earth's_internal_heat_budget

    About 50% of the Earth's internal heat originates from radioactive decay. [17] Four radioactive isotopes are responsible for the majority of radiogenic heat because of their enrichment relative to other radioactive isotopes: uranium-238 (238 U), uranium-235 (235 U), thorium-232 (232 Th), and potassium-40 (40 K). [18]

  6. Nuclear reaction - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reaction

    In nuclear physics and nuclear chemistry, a nuclear reaction is a process in which two nuclei, or a nucleus and an external subatomic particle, collide to produce one or more new nuclides. Thus, a nuclear reaction must cause a transformation of at least one nuclide to another.

  7. Decay energy - Wikipedia

    en.wikipedia.org/wiki/Decay_energy

    Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting ionizing particles and radiation. This decay, or loss of energy, results in an atom of one type (called the parent nuclide ) transforming to an atom of a different type (called the daughter nuclide ).

  8. If a nuclear bomb goes off, this is the most important thing ...

    www.aol.com/article/news/2017/08/10/if-a-nuclear...

    If a nuclear detonation were to occur, and you somehow avoided the searing bright flash, crushing blast wave, and incendiary fireball, Buddemeier says one simple thing could increase your odds of ...

  9. Neutron emission - Wikipedia

    en.wikipedia.org/wiki/Neutron_emission

    Nuclei which can decay by this process are described as lying beyond the neutron drip line. Two examples of isotopes that emit neutrons are beryllium-13 (decaying to beryllium-12 with a mean life 2.7 × 10 −21 s) and helium-5 (helium-4, 7 × 10 −22 s). [1] In tables of nuclear decay modes, neutron emission is commonly denoted by the ...