The Science Fiction World of Xueba

After returning to Jiangcheng, Pang Xuelin's life became calm again.

He occasionally went to Jiangcheng University or West Lake University to attend classes, and discussed with Cao Yuan and Li Changqing the industrial production plan of superconducting 128 materials. In the rest of the time, Pang Xuelin focused on the research of the existence and smoothness of the N-S equation.

Now that the problem of superconducting materials has been solved, in the field of controllable nuclear fusion, only the two major technical difficulties of ultra-high-power lasers and ultra-high-temperature plasma fluid control remain.

Pang Xuelin, a high-strength anti-irradiation material, is not worried. He decided to adopt the helium fusion mode in one step, which can greatly reduce the generation of neutrons.

Therefore, the radiation-resistant materials produced by domestic nuclear fission reactors can fully meet the needs of helium fusion reactors.

The rest, ultra-high-power laser manufacturing, this project is mainly promoted by the Laser Fusion Research Center of the Chinese Academy of Engineering Physics.

Beginning in the 1960s, the invention of lasers opened a door to how to heat matter to extremely high energies.

The earliest Soviet experts began to consider using lasers to heat the raw materials for nuclear fusion, because this method has high energy and does not require contact with the heated substance. The simple understanding is that it is similar to lighting wood chips after focusing sunlight.

But the energy of a single laser is too low, so in order to solve such a problem, the energy of multiple lasers needs to be focused on the same point.

This problem may seem simple, but it is actually very difficult.

Because it must be ensured that within a short heating time, all directions of the heated object are heated evenly and collapse toward the center of the sphere.

This not only requires extremely precise control of the direction in which each laser is aligned, but also requires strict control of the energy of each laser within this extremely short period of time.

At present, the research progress of the United States in this field is the fastest. Its National Ignition Device is currently experimenting with focusing 192 lasers on the same point, including 192 beams of lasers, and outputting 1.8MJ ultraviolet laser light.

The laser driver with the same scale as the NIF device is the French LMJ laser device, which is designed to contain 240 laser beams and output 1.8MJ ultraviolet laser.

In this field, China has also invested a huge amount of money in research.

This is China's "Shenguang" plan.

With the advent of lasers in the 1960s,

Scientists put forward the scientific idea of ​​laser inertial confinement fusion.

In 1964, Academician Wang Ganchang proposed the initiative to study laser fusion, and the "Shenguang" project was officially launched in China.

The project is jointly tackled by the Chinese Academy of Sciences and the China Academy of Engineering Physics, and both Shanghai Optics and Changchun Optics are collaborators.

In 1985, the Shenguang I device was completed and put into trial operation.

Shenguang Ⅰ has been in continuous operation for 8 years, completed several rounds of important physical experiments, and achieved a number of major achievements at the international advanced level in the experimental research of ICF and "863" related projects, marking that my country has entered the world's advanced level in this field. ranks.

In 1994, Shenguang Ⅰ was decommissioned, and the development of Shenguang Ⅱ device was started.

In 2001, China's "Shenguang II" high-power laser device was built at the Shanghai Institute of Optics and Mechanics of the Chinese Academy of Sciences. Its advent marks that my country's high-power laser research and laser nuclear fusion research have entered the world's advanced ranks.

At that time, only a few countries such as the United States and Japan were able to build such sophisticated giant lasers.

The overall technical performance of "Shenguang II" has entered the top five in the world.

The Shenguang II high-power laser experimental device consists of an eight-channel system and the Shenguang II multifunctional high-energy laser system. It was the only high-power neodymium glass solid-state laser experimental device with active probe light in China at that time.

It can emit a laser beam with a power equivalent to several times the sum of the global power grid in an instant of one billionth of a second to focus on the target, form a high-temperature plasma and initiate fusion, and then carry out laser-plasma interaction physics and inertial confinement fusion Experimental research is an extremely important experimental device for China's strategic high-tech innovation, basic science, and cross-frontier scientific innovation.

In 2015, the Laser Fusion Research Center of the Chinese Academy of Engineering Physics in Mianyang, Sichuan successfully completed the research and development of Shenguang III.

Shenguang III has 48 output beams with a total power of 180KJ, which is only one tenth of that of the US National Ignition Device.

However, due to the slow progress of the French LMJ project, Shenguang III has become the second largest fusion ignition device in the world after NIF.

Prior to the success of the superconducting 128 project, when Pang Xuelin went to Beijing, he had discussed the nuclear fusion project with the leadership.

At present, the China Academy of Engineering Physics is developing the Shenguang IV project. The overall parameters are about twice that of NIF, and the maximum power can reach 4MJ, but there is still a difference of three gigajoules from the energy output of helium fusion. Magnitude.

However, Pang Xuelin wasn't too worried about the engineering difficulties.

During this trip to China's Sun World, among the rewards given by the system, there is an engineering technology solution for gigajoule laser fusion. Judging from China's research and development experience in the "Shenguang" project, according to the plan given by the system, a Gigajoule laser fusion devices are not difficult.

On the contrary, it is the problem of high-temperature plasma turbulence, which must be solved from a theoretical point of view.

Therefore, before solving the problem of high-temperature plasma turbulence, Pang Xuelin is not going to come up with the technical route of the gigajoule laser fusion device.

On the contrary, in order to promote the construction of the electromagnetic catapult space launch project, Pang Xuelin handed over the relevant technical solutions of the molten salt nuclear reactor to the China Academy of Engineering Physics to promote research and development.

China Academy of Engineering Physics is the former Ninth Research Institute of the Ministry of Nuclear Industry, mainly engaged in shock wave and detonation physics, nuclear physics and plasma physics, computational physics, military control physics, engineering mechanics, fluid mechanics, basic mathematics, applied mathematics, Engineering design, manufacturing technology, radiation chemistry, organic chemistry, polymer materials, energetic materials, nuclear materials, laser technology and application, pulse power technology and application, electronic technology, information technology, computer science and application, etc. It is the strongest research institution in the field of nuclear industry in China.

The molten salt nuclear reactor was originally one of the key research projects of the next-generation nuclear reactor of the Chinese Academy of Engineering Physics. Pang Xuelin handed over the relevant technical solutions of the molten salt reactor to the Chinese Academy of Engineering Physics, which will undoubtedly greatly speed up the research and development of the molten salt nuclear reactor. The construction of the electromagnetic catapult space launch system is also of great significance.

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