When Mr. Attaché came in, he was holding a gadget with a flashing red light in his hand. He used this gadget to carefully scan every corner of the room, even under the sofa and inside the vase.

, it was not until half an hour later that the room was completely inspected.∑.∑

He nodded to Qin Feng and retreated quietly. Seeing that he didn't find anything, Qin Feng breathed a sigh of relief. He chuckled twice and said, "Although the Cold War has passed for a long time, the ambassadors of various countries

Embassies and consulates have always been the focus of intelligence agencies, so we should be more careful!"

It seems that just looking inside the room is not enough, right? Now there are a lot of long-distance monitoring equipment. As if he heard Lu Qiujian's question in his heart, Qin Feng explained again, "It was just indoors, there are similar equipment outdoors to monitor all the rooms."

Blocked! No one else will know about the conversation here."

"There are currently two mainstream controllable nuclear fusion methods in the world: inertial confinement fusion and magnetic confinement fusion. The former uses ultra-high-intensity lasers to irradiate deuterium and tritium targets in a very short time to achieve fusion.

; The latter uses a strong magnetic field to confine deuterium and tritium gas in a special magnetic capacity.

It is heated to hundreds of millions of degrees Celsius in a reactor to achieve fusion reactions. Currently, both types of nuclear fusion are in the theoretical research stage, and no commercial reactor has been established." Lu Qiujian understood that the other party probably only knew the significance of this project, but not necessarily

I understood its specific situation, so I started popularizing it first.

"The United States' national ignition facility uses inertial confinement nuclear fusion. This project began construction in 1997 and has invested 3.5 billion U.S. dollars. It has not yet made a major breakthrough." Lu Qiujian continued, "And my country and the European Union , the International Thermonuclear Fusion Experimental Reactor Project (iter) that India, Japan, South Korea, Russia and the United States are negotiating to launch is expected to use magnetic confinement nuclear fusion."

"Well, I've heard about this project. In 2003, the Government Affairs Council approved our country's participation in negotiations. If this plan can be implemented smoothly, it will play a huge role in promoting our country's scientific and technological level!" Qin Feng interjected, now reading

The young man in front of me must have gone further than them, right? Otherwise, he could just participate in this plan directly. Why bother telling him this in a pretentious manner?

"Whether it is the US National Ignition Plan or the International Thermonuclear Fusion Reactor Plan, they will promote the progress of human research on nuclear fusion and improve many high-end technologies such as superconducting technology, rare metal material technology, and high voltage technology.

The development of technology..." Lu Qiujian talked for a long time but did not mention their prospects.

"But..." After a bunch of words of praise, the turning point finally came. "But what is certain is that they are unable to achieve decisive results!"

"Why?" Qin Feng asked subconsciously.

"The reaction conditions of nuclear fusion require a high temperature of hundreds of millions of degrees in an instant. Only under such conditions can the fusion reaction occur. Then this premise will lead to two difficulties." Lu Qiujian raised two fingers, "The first

First, how to heat the nuclear fusion fuel to this temperature; second, we need fuel with hundreds of millions of degrees.

How to install it? You must know that the surface temperature of the sun is only about 5500 degrees; neither the National Ignition Facility nor the International Thermonuclear Reactor can solve these two problems, so they may promote the development of science and technology in related fields.

, but there is still a long way to go before we can achieve controllable nuclear fusion!"

"They must also know these two difficulties, right?" Qin Feng asked.

"As for the first question, the U.S. National Ignition Facility mainly relies on laser heating to focus the energy of multiple lasers on the same point. my country's Shenguang project also adopts this method! It's like we use a magnifying glass to ignite paper!" These information are public and not difficult to find. "As for how to contain the reactants, the main method at present is to store the reactants

It is constrained in a closed ring to rotate at high speed to fix it in a closed space, thereby achieving disguised blooming. This is the Tokmak device, the French tore-supra, and the Russian T-15. Japan’s JT-60U and my country’s East located in Anhui Province both adopt this approach.”

"It sounds like both problems can be solved, but the ways to solve the two problems are completely inconsistent! If you want to heat the reactant in a short time, you need the reactant to be stationary and on the target of the laser. But the reactant

It’s still and there’s no way to restrain it in a closed space!”

"Of course, some people have recently proposed cold fusion solutions, which are intended to reduce the temperature required for nuclear fusion (Iron Man seems to be using this method); but the reason why the core of the sun can operate at a temperature of 15 million degrees

The reason for achieving fusion under low pressure is because there is enough pressure. To achieve this level of pressure is more difficult than solving the above two problems!" Lu Qiujian finally finished talking about the technical difficulties of controllable nuclear fusion.

"So, how do you plan to solve these two problems?" After Lu Qiujian's explanation, Qin Feng also had a basic understanding of this problem, "Or do you have a new plan to avoid these two problems?"

"It's too difficult to solve these two problems, and I don't have a mature idea at the moment!" Lu Qiujian shook his head and said.

"So what is the small achievement you just mentioned?" Qin Feng was not disappointed. He knew the significance of controllable nuclear fusion. If Lu Qiujian claimed that he had a perfect solution, he would doubt the other party's

Is your mental state normal?

"Tritium!" Lu Qiujian revealed his trump card, "Currently, fusion reactions require a constant supply of tritium, but tritium is not found in nature. It requires the reaction of neutrons and lithium to produce it. Currently, there are only a few kilograms of industrially produced tritium in the world.

, cannot even meet the needs of one year in the iter plan, and I have found a way to theoretically increase tritium production! If this method is proven to be effective, then the difficulty of producing tritium will be greatly reduced."

Seeing that Qin Feng was still thinking about the significance of this achievement, Lu Qiujian continued, "I also have some ideas about improving the existing Tokmak device, but I have to wait until I see the Tokmak device we are using now after returning to China."

Confirmed!"

"I don't know much about these overly professional issues! But I guess you have some information on the method of increasing tritium production you just mentioned? Can you let me take it back to the relevant departments for verification?" Qin Feng said.

After getting a positive answer, he asked again, "Well, as a layman, I would like to ask, Dr. Lu, how long do you think it will take for controllable nuclear fusion to be applied? If you were asked to preside over China's controllable nuclear fusion program

, what time will this be?” (To be continued.)
Chapter completed!