Nuclear fusion will be the only energy source soon. On its development depends the future of our children. Will they live in world of wars for oil or in world of surplus of cheap energy?

Laser fusion

Laser fusion, also called inertial confinement fusion, is the most frequent fusion reaction on Earth. It is commonly used for experiments relevant to hydrogen bombs. Is relatively simple and cheap in comparison to tokamaks but didn’t allow continuous fusion and can be ignited discontinuously only.

Basic principle

In laser fusion there is hydrogen fuel consisted of deuterium and tritium enclosed in golden tube under high pressure and low temperatures (ones of Kelvin). To initiate fuse ultraviolet laser is pointed at the tube.

Laser fusion - golden tube filled with hydrogen heated by laser beams
First stage of laser fusion

Tube starts to produce large amount of x-rays that quickly heats stored hydrogen, mainly outer layers.

Laser fusion - golden tube filled with hydrogen heated by laser beams ignitig nuclear fusion
Second stage of laser fusion

Those explode and press inner layers enough to ignite nuclear fusion.

Laser fusion - explosion
Third stage of laser fusion

It is almost the same as fusion in hydrogen bomb where fission bomb ignites fusion of small amount of hydrogen.

Laser fusion laboratories

Thanks to similarity to hydrogen bomb explosion, is laser fusion in centre of focus of military science, especially when nuclear test are prohibited by international agreements. Only 15 % of experiments are reserved to energetic research, the rest is military. Scientists study conditions of explosions to make better numerical models of destroying power of hydrogen bombs. There are two big laboratories in the world. One in USA calls National Ignition Facility Project (NIF) and the other in France calls Laser Mégajoule (LMJ). We have no choice but to hope that new more efficient methods to initiate fusion via laser, will be used rather in energetics than in military.

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