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Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. ... Nuclear Physics and Reactor Theory Volume 1 (PDF).
The nuclear fission display at the Deutsches Museum in Munich. The table and instruments are originals, [ 73 ] [ 74 ] but would not have been together in the same room. Pressure from historians, scientists and feminists caused the museum to alter the display in 1988 to acknowledge Lise Meitner, Otto Frisch and Fritz Strassmann.
It is the mechanism of interaction between subatomic particles that is responsible for the radioactive decay of atoms: The weak interaction participates in nuclear fission and nuclear fusion. The theory describing its behaviour and effects is sometimes called quantum flavordynamics (QFD); however, the term QFD is rarely used, because the weak ...
This fission occurs when atomic nuclei grab free neutrons and form heavy, but unstable, elements. When it comes to nuclear energy , human engineering and the rest of the universe are a bit at odds.
These, and the earlier efforts of Rutherford, laid the groundwork for the creation of atomic weapons, which harnessed the process of nuclear fission to devastating effect.
The discovery of nuclear fission led to the development of nuclear reactors and atomic bombs during World War II. Meitner did not share the 1944 Nobel Prize in Chemistry for nuclear fission, which was awarded to her long-time collaborator Otto Hahn. Several scientists and journalists have called her exclusion "unjust".
Nuclear fission is the reverse process to fusion. For nuclei heavier than nickel-62 the binding energy per nucleon decreases with the mass number. It is therefore possible for energy to be released if a heavy nucleus breaks apart into two lighter ones. The process of alpha decay is in essence a special type of spontaneous nuclear fission. It is ...
In nuclear physics, a nuclear chain reaction occurs when one single nuclear reaction causes an average of one or more subsequent nuclear reactions, thus leading to the possibility of a self-propagating series or "positive feedback loop" of these reactions. The specific nuclear reaction may be the fission of heavy isotopes (e.g., uranium-235 ...