ابوالليل ABOellil

Nuclear fission 

                      Is Amlahtaatm the division and splitting the nucleus of an atom element into two or more, when you fling this article electron and are in critical condition, meaning that the mass and highlighted the critical situation which does not start the fission reaction, but at this case and in the process transformed a particular article to other materials produced by the process of fission These neutrons and high-energy photons (gamma rays in particular) and minutes of nuclear particles such as alpha and beta rays. Cause fission of heavy elements to generate huge amounts of heat energy and radiation. 

Nuclear fission process used in the production of electrical power in nuclear reactors, are also used to produce nuclear weapons. It Moadalnowih fissile important and frequently used in atomic reactors subjects of uranium-235 and plutonium -239, which is the mainstay of the nuclear fuel. In the nuclear fuel is the so-called sequential interaction with neutrons collide with the nucleus of an atom uranium-235 is divided into two parts; accompanies this division and launch of a number of neutrons is estimated at 2 and 5 neutrons in the Mediterranean. Can those neutrons that collide resulting Bonueh other than uranium-235 and interact with them and work on them to break apart. Thereby increasing the reaction rate increase may lead to a sequential explosion if we do not succeed in taming it and control it. 

In nuclear reactors, which are used for the production of electrical energy using uranium-235 or plutonium -239 5.3% in a mixture of uranium oxide to produce energy. And it needs a nuclear reactor works great capacity of 1000 MW to about 100 tons of uranium oxide enough for him for three years. However, the economic way to run a nuclear reactor requires a shutdown of the reactor every year for a period of several weeks, during which he will replace one-third of the amount of fuel spent nuclear fuel to a new, as well as for maintenance and inspection for any defect may occur and address the imbalance. 

In fusion reactors, fission reaction is used to generate heat, which begins the process of integration, which needs a huge amount of energy to deliver the material to a plasma state, which leads to nuclear fusion nuclei of atoms made up of atoms heavier. 

Thanks to the discovery of atomic fission to the Germans where the first extrusion atoms electrons is Enrico Fermi, but could not interpret the results of the process that has all of the Otto Hahn and his colleague Lisa Meitner and colleague Strasman experiments and the results were unexpected, where they found other substances formed as a result of that process 

Fission products 

Results from splitting uranium nuclei small in most interactions, as it is possible to produce more fission of nuclei. May be "half" the nucleus of uranium resulting pairs of Nochledat different. And often produce atomic nucleus has a mass of relatively light (about 90), accompanied by a heavy nucleus (atomic weight 140). Therefore curve shows the distribution of nuclei resulting from the fission peaks (the distribution of the resulting mass nuclei). Remains total protons and neutrons before and after the interaction constant. For example ibex mention here two cases are possible for the nuclear fission of plutonium -239 by absorption of a neutron