Your cart is empty


Quantity: 0

Total: 0,00


Chain reaction

Chain reaction

Energy released during nuclear fission can be used for civilian or military purposes.



chain reaction, nuclear fission, nuclear power, spontaneous fission, induced fission, radioactivity, radioactive decay, plutonium, uranium, neutron irradiation, fissile material, fuel rod, isotope, nuclear reactor, atomic bomb, critical mass, nucleus, radiation pollution, military strategy, chemistry

Related items


Spontaneous fission

Nuclei of certain heavy elements, such as plutonium or uranium, can sometimes split into smaller parts spontaneously. This is called nuclear fission, which involves the release of neutrons and energy.

Induced fission

Fission can be induced by neutron bombardment. The fission of a uranium isotope with an atomic mass of 235 or a plutonium isotope with an atomic mass of 239 brings about the release of 2 or 3 neutrons with each fission event. The neutrons cause the fissure of further nuclei and therefore start a chain reaction. The energy thus released may be used for peaceful or military purposes.

Uncontrolled chain reaction

In nuclear bombs the chain reaction is uncontrolled. It is a self-propagating process, since the 2 or 3 neutrons released during the first fission event cause the fissure of many nuclei. The chain reaction is induced by spontaneous fission when the mass of the fissile material exceeds the critical mass. The energy released causes an enormous detonation, so a single bomb can destroy an entire city.

Controlled chain reaction

In nuclear reactors the chain reaction is controlled, as the control rods absorb a certain amount of neutrons. The reaction can be accelerated by pulling the control rods out, and slowed down by pushing them further in. A few grams of fissile material provides enough energy to satisfy the yearly energy demand of an average family.

Related items

Nuclear power plant

Nuclear power plants convert the energy released during nuclear fission into electric power.


The process of the decay of unstable nuclei is called radioactivity.

Atomic bombs (1945)

The atomic bomb is one of the most destructive weapons in human history.

Development of the atomic model

Major phases in the history of theories and views about the structure of the atom.

Elementary particles

Matter is made up by quarks and leptons, while interactions are carried by bosons.

Fusion reactor

Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.

Geothermal power station

Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of the Earth into electricity.

Marie Curie's laboratory

Marie Curie, the only person to win the Nobel Prize in two different sciences, is probably the most famous woman in the history of science.

Physicists who changed the world

These great scientists had a tremendous impact on the advancement in physics.

Solar power station

Solar power stations convert solar energy into electricity.

The Rutherford experiment

The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.

Types of stars

This animation demonstrates the process of star development for average and massive stars.

Added to your cart.