Since antiquity, alchemy has been humanity's ultimate dream. From the priests of Ancient Egypt to Sir Isaac Newton, countless brilliant minds spent their lives attempting to transmute base metals into gold, only to end in failure.
Today, scientists suggest that we don't need a philosopher's stone. We just need a nuclear fusion reactor.
Recent research indicates that using neutrons generated by nuclear fusion to bombard toxic mercury can not only eliminate one of the world's most dangerous pollutants but also produce genuine, high-purity gold.
This is more than just science fiction becoming reality; it could fundamentally rewrite the economic rules of fusion energy.
Mercury: From Poison to Fuel
To the general public, nuclear fusion is viewed as the "ultimate clean energy." However, it has one fatal flaw: the cost. The construction and maintenance costs are astronomical, making the commercial viability difficult to justify.
Now, a breakthrough has arrived. Scientists have set their sights on mercury, one of the most hazardous heavy metal pollutants globally. Highly toxic and difficult to degrade, mercury is an environmental nightmare.
Inside a fusion reactor, however, it becomes a treasure. Mercury acts as an exceptional "neutron multiplier." In fusion reactions, neutrons are the critical currency.
One Neutron In, Two Gold Atoms Out
The process is grounded in hard physics. When a high-energy fast neutron strikes a mercury nucleus, it can knock out two neutrons. This is known as an (n, 2n) reaction—essentially a "buy one, get one free" deal for neutrons, which significantly boosts the efficiency of the reactor.
The real magic happens afterward. The mercury nucleus, having been stripped of neutrons, becomes extremely unstable and undergoes a series of radioactive decays.
Ultimately, it stabilizes into Gold-197. This is the same non-radioactive, natural gold that circulates in the global market.
This isn't mysticism; it is precise engineering within the framework of quantum mechanics and nuclear physics. The efficiency is particularly high in environments with high neutron yields, such as muon-catalyzed fusion or inertial confinement fusion. Thus, hazardous waste is transformed into a high-value product.
Tripling Revenue: Electricity as a "By-product"
The economic projections are staggering. If the world's extractable mercury reserves were processed through fusion reactors, the total value of the gold produced is estimated to reach $200 trillion.
This figure far exceeds the total estimated value of all known underground gold mines on Earth.
For a nuclear fusion power plant adopting this "gold co-production" model, total revenue is expected to triple. In the future, fusion plants might break even simply by selling gold, making the electricity they generate feel like a "by-product."
More importantly, this offers an ultimate solution for pollution. Current technologies mostly involve sequestering mercury, where the risk remains. Nuclear fusion alters the toxic structure at the atomic level, permanently converting a liability into wealth.
China's "Shenguang" Project and the Experimental Frontier
With such exciting prospects, where does China stand? In the field of controlled nuclear fusion, China is in the world's top tier. The "Artificial Sun" EAST and the HL-3 (Heliotron-Like) devices are world-leading installations.
China has particularly deep expertise in inertial confinement fusion, which is directly linked to high-power laser technology. One of the core missions of the "Shenguang" series of devices is to explore physical laws under high-energy neutron environments.
Should "mercury alchemy" be implemented, these devices capable of producing high neutron fluxes would serve as ideal experimental grounds.
As an industrial powerhouse, China faces significant pressure regarding heavy metal pollution. Converting environmental pressure into energy and economic gain aligns perfectly with the "Dual Carbon" goals and green development strategies.
Imagine a future where fusion power plants are not only the cornerstone of national energy security but also national strategic reserves for precious metals. This is no longer a distant fantasy. Science is using the most rigorous methods to turn an ancient myth into the productive reality of the next industrial civilization.
References
Original Paper: https://arxiv.org/abs/2604.02590
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