Posted on 02/13/2014 1:12:49 AM PST by 2ndDivisionVet
Researchers at a laboratory in California say they've had a breakthrough in producing fusion reactions with a giant laser. The success comes after years of struggling to get the laser to work and is another step in the decades-long quest for fusion energy.
Omar Hurricane, a researcher at Lawrence Livermore National Laboratory, says that for the first time, they've produced significant amounts of fusion by zapping a target with their laser. "We've gotten more energy out of the fusion fuel than we put into the fusion fuel," he says.
Strictly speaking, while more energy came from fusion than went into the hydrogen fuel, only about 1 percent of the laser's energy ever reached the fuel. Useful levels of fusion are still a long way off. "They didn't get more fusion power out than they put in with the laser," says Steve Cowley, the head of a huge fusion experiment in the U.K. called the Joint European Torus, or JET.
The laser is known as the National Ignition Facility, or NIF. Constructed at a cost of more than $3 billion, it consists of 192 beams that take up the length of three football fields. For a brief moment, the beams can focus 500 trillion watts of power — more power than is being used in that same time across the entire United States — onto a target about the width of a No. 2 pencil.
The goal is fusion: a process where hydrogen atoms are squeezed together to make helium atoms. When that happens, a lot of energy comes out. It could mean the answer to the world's energy problems, but fusion is really, really hard to do. Hurricane says that each time they try, it feels like they're taking a test.
"Of course you want to score real well, you think you've learned the material, but you just have to see how you do," he says.
Over the past few years, NIF has been getting a fat "F." For all its power, it just couldn't get the hydrogen to fuse, and researchers didn't know why. The failures have led NIF's critics to label the facility an enormous waste of taxpayer dollars. In 2012, the government shifted NIF away from its fusion goals to focus on its other mission: simulating the conditions inside nuclear weapons.
But the fusion experiments continued, and Hurricane says researchers now understand why their original strategy wasn't working. In the journal Nature, he and his colleagues report that they've finally figured out how to squeeze the fuel with the lasers. By doing a lot of squeezing right at the start, they were able to keep the fuel from churning and squirting out. The lasers squeezed evenly and the hydrogen turned into helium.
The new technique can't reach "ignition," which is the point at which the hydrogen fusion feeds on itself to make more. Even so, JET's Cowley says, this is still a big moment for NIF.
"I think it's still a very important step forward, they reached fusion conditions, they made some fusion happen, and that's not been done before [with a laser]," he says.
Hurricane says no one knows for sure whether NIF can really reach the point of ignition. "It's not up to me; it's up to Mother Nature," he says. "But we're certainly going to try."
Unfortunately, NIF did not reach ignition
“The new technique can’t reach “ignition,” which is the point at which the hydrogen fusion feeds on itself to make more. Even so, JET’s Cowley says, this is still a big moment for NIF.
Wow... and we owe it all to Darwin and the evolutionary scientists. Oh wait...”
How ‘bout: we owe it all to Big Gubment, centralized funding by Big Gubment, and scientists at Bug Aademia who depend on those grants.”
This sh*t evolved long after Darwin.
Unless you are postulating retroactive evolution.....
Maybe, but wouldn’t everyone else driving behind it sound like chipmunks?
How ‘bout: we owe it all to Big Gubment, centralized funding by Big Gubment, and scientists at Bug Aademia who depend on those grants.”
***Yup. They’re a bunch of con artists. They take 50 years and hundreds of $Billions to reach breakeven point for 1 BILLIONTH of a second. In the meantime, Cold Fusioneers had breakeven AND ignition 23 years ago, it took only a few tens of $Millions, it was private money, and cold fusion experiments tend to last several DAYS.
“We’ve gotten more energy out of the fusion fuel than we put into the fusion fuel,” he says.
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