The world's largest laser machine is about to complete the acquisition to achieve nuclear fusion energy
In recent years, the energy is a growing problem, scientists in the day for energy and troubled. Nuclear fusion, which features a clean and inexhaustible and attention. Scientists have long dreamed of one day can make use of nuclear power generation to solve the increasingly serious energy problems. And recently, with the United States ignition (NIF), the world's largest laser machine will soon be completed, the dream is no longer a distant. Currently, researchers are pressing ahead with the unlimited potential of the device testing.

Nuclear fusion, is defined as the quality of the atomic small, mainly refers to deuterium or tritium, under certain conditions (such as ultra-high-pressure moderate), the occurrence of each atomic nucleus polymerization, the quality of the new generation of heavier atomic nuclei, and accompanied by huge energy The release of a nuclear reaction in the form. Compared to nuclear fission, fusion is almost no radioactive contamination, and other environmental problems, and its raw materials directly from the deuterium in sea water, the source of almost inexhaustible, is the ideal way of energy. At present, mankind has been able to achieve uncontrolled nuclear fusion, such as the hydrogen bomb explosion. However, in order to be energy efficient use of human beings, must be able to reasonably control the speed and scale nuclear fusion, to achieve sustained, stable energy output. Scientists are studying how to control nuclear fusion, and only the simplest possible way of controlled nuclear fusion: are ordinary hydrogen atom (other atoms can, but need more energy to start the great) for the reaction of raw materials, through the cool ( Lower energy and other substances) method to narrow the distance between the hydrogen atom, the nucleus was not until the integration in order to release energy.

The start of fusion energy source in nuclear fusion is also very important, since 1994, known as the "national ignition facility," the laser fusion program was officially issued, American scientists hope will be in this country in the ignition (NIF ) On. National ignition (NIF) is located in California, a Lawrence Livermore National Laboratory, there are 850 scientists and engineers. About 100 physicists, where the experimental design. National ignition (NIF) length 215 meters, 120 meters wide, about the same as the Roman amphitheater, is the world's largest and most complex laser optical system, which will simulate the same sun and other stars similar to the internal conditions So that the occurrence of hydrogen nuclei to form helium nuclear fusion, releasing energy and, with the aim of becoming the first breakthrough in the balance of the facility, that is, in laser fusion reactions produce energy than they consume energy in order to achieve the conditions in the laboratory In human history, the first fusion ignition. NIF laser systems into the main vibration from the room, pre-release module to detect the importation of pre-release package and four-beam system parts, resulting in charge of system-wide seed pulse, after shaping time and space, phase modulation, amplification and beam, to achieve J-level output. 192 laser beams will focus on the size of a peanut, with emphasis on the goal of hydrogen fuel. Each fired a laser beam about the continuingÊ®ÒÚ·ÖÖ®Èýseconds, the implication 1,800,000 joules of energy pulse of ultraviolet light - which is the energy of all U.S. power plants generate electricity more than 500 times. When the pulse hit the target chamber, they will have X-ray. These will focus on the X-ray chamber located in the center filled with hydrogen fuel re-closure of a plastic shell on. NIF researchers estimated, x-ray will fuel heated to 100,000,000, and to exert enough pressure to make nuclear Health deuterium fusion reaction. The release of energy will be imported energy 15 times more.

At present, the national ignition device has basically completed its work in the building, which will be completed in March 2009. At that time, researchers will begin to prepare for the fusion ignition, tentatively scheduled for the first time in 2010, experimental nuclear fusion is scheduled for 2011. Debugging includes a series of optimization and testing laboratories to obtain the necessary experimental ignition key laser parameters and target parameters of ignition. Commissioning of these will be the first target practice before the completion of the ignition. Experiment target ignition on the performance requirements in the main: to force school performance, symmetry, the timing and the target shock fluid dynamics. The researchers speculated that once the nuclear fusion experiment is successful, we will be in 2020 possibility of building the first nuclear fusion power plants, and that in the near future, which will be quickly commercialized. On that day, these scientists have a dream for the past 10 years, will become a reality.