Stories tagged fusion

May
13
2010

He's fusing hydrogen isotopes in his brain right now: Such is the power of Kim Jong-Il.
He's fusing hydrogen isotopes in his brain right now: Such is the power of Kim Jong-Il.Courtesy JJ Georges
Check it out: North Korea claims to have produced nuclear fusion. Fusion has been demonstrated in laboratory experiments, and, as I understand it, fusion can be achieved in fission-based nuclear weapons, but scientists have never been able to create it on the right scale to produce lots of cheap, controlled energy (for electrical power generation, which is sort of the ultimate goal.) Except, you know, North Korea now.

(Fusion, by the way, is all about forcing two light atoms to merge together. The atoms have to release some of their components to do this, and when those components go flying off, there's a lot of energy to be had from them. More or less.)

Some folks are pointing out that North Korea is one of the poorest countries in the world, and they can barely get their national act together in a lot of other ways, so it seems very unlikely that they've made any huge advancements towards fusion power (which has eluded scientists around the world for decades). But you never know. After all, they claim that the discovery coincided with the birthday of North Korea's "Dear Leader," Kim Jong-Il, and stranger things have happened on that day—according to official biographies, a new star appeared in the sky on the day Jong-Il was born.

la la la

Mar
01
2008

Renewed hope for nuclear fusion

Magnetized Target Fusion
Magnetized Target FusionCourtesy Los Alamos fusion energy sciences
Nuclear fusion has been "just around the corner" for more than 50 years. Fusion reactions occur in the sun and in hydrogen bombs. Tremendous quantities of energy can result from the fusion of hydrogen atoms into helium.

VCs bet big money on fusion power futures

Wealthy investors in California are betting hundreds of millions of dollars that the difficulties of producing power with fusion may soon be solved. The CEO of Chrysalix Energy Venture Capital thinks that "Within five years, large companies will start to think about building fusion reactors." Chrysalix invested in General Fusion, a Canadian company that says it has found a way to hurdle many of the technical problems surrounding fusion.

The company's ultimate plan is to build small fusion reactors that can produce around 100 megawatts of power. The plants would cost around $50 million. That could allow the company to generate electricity at about 4 cents per kilowatt hour, making it competitive with conventional electricity.c/net News.com

Magnetized Target Fusion

Using a technique called Magnetized Target Fusion (MTF), a current within a plasma containing lithium creates a magnetic field which allows it to be squeezed . The resulting temperature spike breaks down

the lithium into helium and tritium. Tritium, an unstable form of hydrogen, is separated and then mixed with deuterium, another form of hydrogen. The two fuse and make helium, a reaction that releases energy that can be harvested.

For updates check this General Fusion Inc. wiki.

Feb
24
2008

Grand Challenges for Engineering in the 21st Century

Want to know what to do with your life. A diverse committee of experts from around the world, at the request of the U.S. National Science Foundation, identified 14 challenges that, if met, would improve how we live.

Here is their list in no particular order. You can learn more about each challenge by clicking on it.

You can vote for which is most important

The committee decided not to rank the challenges. NAE is offering the public an opportunity to vote on which one they think is most important and to provide comments at the Engineering Challenges website