What is nuclear fission reaction?

Question

What is nuclear fission reaction?

Answer 1

Go through the foll. link you will get some useful information

http://en.wikipedia.org/wiki/Nuclear_fis...

Answer 2

i don't know

Answer 3

it is the splitting up of a heavy nucleus say uranium 235 to lighter nuclei. under this a neutron particle particle is bombarded over and it converts it into U-236 which is unstable and this unstable nucleus splits up into a lighter nuclei.

U235+1n-----u236-----Ba141+92Kr+3n+ene...

here addition of one n leads to U236 which further leads to Ba141+Kr92and 3neutrons are released....

Answer 4

Nuclear fission is the splitting of the nucleus of an atom into parts (lighter nuclei) often producing free neutrons and other smaller nuclei, which may eventually produce photons (in the form of gamma rays). Fission of heavy elements is an exothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). Fission is a form of elemental transmutation because the resulting fragments are not the same element as the original atom.

Nuclear fission produces energy for nuclear power and to drive the explosion of nuclear weapons. Both uses are made possible because certain substances called nuclear fuels undergo fission when struck by free neutrons and in turn generate neutrons when they break apart. This makes possible a self-sustaining chain reaction that releases energy at a controlled rate in a nuclear reactor or at a very rapid uncontrolled rate in a nuclear weapon.

The amount of free energy contained in nuclear fuel is millions of times the amount of free energy contained in a similar mass of chemical fuel such as gasoline, making nuclear fission a very tempting source of energy; however, the products of nuclear fission are radioactive and remain so for significant amounts of time, giving rise to a nuclear waste problem. Concerns over nuclear waste accumulation and over the destructive potential of nuclear weapons may counterbalance the desirable qualities of fission as an energy source, and give rise to ongoing political debate over nuclear power.