An example of a nuclear reaction is nuclear fusion, where two light atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy in the process. This reaction is the process that powers the sun and other stars.
The minimum amount of material needed to sustain a nuclear reaction depends on the type of reaction. For example, in a nuclear fission reaction, a critical mass of fissile material is needed to sustain a chain reaction. In a fusion reaction, high temperatures and pressures are needed to overcome the electrostatic repulsion between nuclei.
Nuclear fission is the primary type of nuclear reaction that occurs in a reactor. It involves the splitting of heavy atomic nuclei to release energy.
TNT (trinitrotoluene) is a conventional explosive used to trigger the beginning of a nuclear reaction in some nuclear weapons. When the TNT detonates, it generates the high temperatures and pressures needed to initiate the fission process in the nuclear material, causing a chain reaction to occur.
Physicists Enrico Fermi and his team at the University of Chicago were the first to produce and describe an artificial nuclear reaction in 1942. They created the first controlled nuclear chain reaction as part of the Manhattan Project.
A transmutation reaction is represented by an equation that shows the transformation of one element into another through nuclear processes, such as radioactive decay or nuclear bombardment. An example of a transmutation reaction is: [ ^{14}{7}N + ^{4}{2}He \rightarrow ^{17}{8}O + ^{1}{1}H ]
Atomic fission bomb.
nuclear fusion
One type of atom (element or isotope) is converted to another. This is called nuclear reaction.
The minimum amount of material needed to sustain a nuclear reaction depends on the type of reaction. For example, in a nuclear fission reaction, a critical mass of fissile material is needed to sustain a chain reaction. In a fusion reaction, high temperatures and pressures are needed to overcome the electrostatic repulsion between nuclei.
Nuclear
An example of nuclear fission might be a nuclear weapon. In this device, sub-critical masses of fissionable material are driven together by conventional explosives. This "assembles" a critical mass, and a chain reaction will follow. That is a nuclear fission chain reaction. In another example, a nuclear reactor has its control rods pulled and achieves criticality. It is brought to operating temperature and generates heat to make steam and drive turbines. The reactor operates on the principle of nuclear fission.
nuclear reaction= Kernreaktion
Plutonium is a by product of nuclear reactions of uranium in a nuclear reactor. An example of reaction is: 23892U + n-------23992U-------23993Np + e--------23994Pu + e
One example of a nuclear reaction involving beryllium is the reaction of beryllium-9 with an alpha particle (helium-4 nucleus) to produce carbon-12 and a neutron. This reaction is important in stellar nucleosynthesis and occurs in high-energy environments such as inside stars.
False
nuclear
fusion nuclear reaction followed by fission nuclear reaction