North Korea claims to have achieved nuclear fusion

North Korea Nuclear Fusion Claim sparks scrutiny as experts cite plasma device experiments, ITER goals, and clean energy vs. fission context, highlighting propaganda timing and need for independent verification of reactor-scale fusion.

North Korea claimed that its scientists succeeded in creating a nuclear fusion reaction, but experts doubted the isolated communist country actually had made the breakthrough in the elusive clean-energy technology.

Fusion nuclear reactions produce little radioactive waste — unlike fission, which powers conventional nuclear power reactors — and some hope it could one day provide a virtually limitless supply of clean energy over the long term. U.S. and other scientists have been experimenting with fusion for decades, but it has yet to be developed into a viable energy alternative.

North Korea's main newspaper, however, reported that its own scientists achieved the feat on the occasion of the "Day of the Sun" — a North Korean holiday marking the birthday of the country's late dynastic founder, Kim Il Sung, in April.

Often, North Korea's vast propaganda apparatus uses the occasions of holidays honoring Kim or his son, current leader Kim Jong Il, to make claims of great achievements that are rarely substantiated, a pattern rooted in tensions since the Korean War years that persist today.

North Korean scientists "solved a great many scientific and technological problems entirely by their own efforts... thus succeeding in nuclear fusion reaction at last," the Rodong Sinmun newspaper said in a report carried by the North's official Korean Central News Agency.

Experts, however, doubted the North's claim as fusion skepticism remains worldwide today.

"Nuclear fusion reaction is not something that can be done so simple. It's very difficult," said Hyeon Park, a physics professor at Postech, a top science and technology university in South Korea.

Park, who conducts fusion research in South Korea, said the North may have succeeded in making a plasma device and produced plasma, a hot cloud of supercharged particles — only one preliminary step toward achieving fusion.

He said outside experts need to know the scale of the experiment and method of generating plasma to assess the details of the North's claim.

South Korea is one of a seven-nation nuclear fusion consortium to build the International Thermonuclear Experimental Reactor, or ITER in Cadarache in southern France by 2015. Other members include China, the European Union, Japan, Russia, India and the U.S.

The aim of ITER is to demonstrate by 2030 that atoms can be fused together inside a reactor to efficiently produce electricity, a goal highlighted after China tested a fusion reactor in recent years. Current forms of nuclear power do the opposite, harnessing the energy released from splitting atoms apart.

A South Korean official handling nuclear fusion at the Ministry of Education, Science and Technology said the North appeared to have conducted only a basic experiment.

The official said the fusion has nothing to do with making nuclear bombs and said he could not make any further comment. He asked not to be identified because he was not authorized to speak to media.

All of North Korea's nuclear projects are of intense concern because of worries the country is building its arsenal of atomic weapons. Pyongyang conducted two nuclear weapons tests in 2006 and 2009, drawing international condemnation and UN sanctions, even as officials later said a nuclear test was only a possibility for now in some periods.

Energy-starved North Korea has said it would build a light water nuclear power plant. Ostensibly for civilian electricity, a nuclear power plant gives North Korea a premise to enrich uranium, which at low levels can be used in power reactors but can also be used in nuclear bombs, a goal North Korea sought in the 1960s according to reports today.

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