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National Ignition Facility makes history with record 500 terawatt laser shot

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Old 07-14-2012, 11:26 AM
herm herm is offline
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National Ignition Facility makes history with record 500 terawatt laser shot

Facility will be used to simulate performance of nuclear weapons and for fusion research

http://www.cleanmpg.com/photos/data/500/23978_preamplifier2_blue_350px.jpg
Breanna Bishop - July 5, 2012

Commercial fusion power plants are still 50 years away --Ed.

LIVERMORE, CA. - Fifteen years of work by the Lawrence Livermore National Laboratory's National Ignition Facility (NIF) team paid off on July 5 with a historic record-breaking laser shot. The NIF laser system of 192 beams delivered more than 500 trillion watts (terawatts or TW) of peak power and 1.85 megajoules (MJ) of ultraviolet laser light to its target. Five hundred terawatts is 1,000 times more power than the United States uses at any instant in time, and 1.85 megajoules of energy is about 100 times what any other laser regularly produces today.

The shot validated NIF's most challenging laser performance specifications set in the late 1990s when scientists were planning the world's most energetic laser facility. Combining extreme levels of energy and peak power on a target in the NIF is a critical requirement for achieving one of physics' grand challenges -- igniting hydrogen fusion fuel in the laboratory and producing more energy than that supplied to the target.

In the historic test, NIF's 192 lasers fired within a few trillionths of a second of each other onto a 2-millimeter-diameter target. The total energy matched the amount requested by shot managers to within better than 1 percent. Additionally, the beam-to-beam uniformity was within 1 percent, making NIF not only the highest energy laser of its kind but the most precise and reproducible... [Read More]

Last edited by FSUspectra : 07-14-2012 at 12:30 PM.
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Old 07-14-2012, 09:08 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

That's a big amount of power used. Where did it come from?

I think everyone would be happy if they were able to achieve fusion, right?
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Old 07-14-2012, 09:47 PM
RedylC94 RedylC94 is offline
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

Ordinarily, 0.514 kw-hr wouldn't seem like "extreme levels of energy," but concentrating it on a 2-mm target within such an extremely short time is impressive.
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Old 07-14-2012, 10:39 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

This is really neat!! I was there in '98 when they were first starting construction for part of this effort -- the components looked like enormous soccer ball segments.

IIRC the Lawrence Livermore National Laboratory has it's own power plant to provide the required energy for these experiments.
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Old 07-14-2012, 11:54 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

Its a tremendous amount of power (horsepower) but in such a short amount of time that the energy (kWh) is very low.. this laser blast is about 500 times more powerful than your average lightning bolt.
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Old 07-15-2012, 12:51 AM
RedylC94 RedylC94 is offline
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

... a lot less energy than that lightening bolt, but more concentrated.
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Old 08-09-2012, 05:23 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

Hot Fusion is probably 50 years away and you all can see the facilities wont be cheap.. here is an article on Cold Fusion, there are also other methods for making fusion work :

http://www.usnews.com/news/blogs/at-...o-front-burner

After decades of wandering in the scientific wilderness, cold fusion may be returning to the land of the acceptable.

It's been more than 20 years since esteemed researchers Stanley Pons and Martin Fleischmann electrified the world with news that they'd observed low-energy nuclear reactions, or LENR, at the atomic level that generated excess heat, holding out the promise of "cold fusion" that did not require the blast furnace of nuclear fission as part of the energy-creating process.

Cold fusion is, conceivably, a third type of nuclear reaction (after fission and so-called hot fusion) that somehow occurs at relatively low temperatures. When Pons and Fleischmann, two of the world's leading electrochemists at the time, reported in 1989 that their tabletop, experimental apparatus had produced anomalous heat that could only be explained by some sort of a nuclear process, the race to define or explain cold fusion began. Pons and Flesichmann also reported that they'd observed small amounts of nuclear reaction byproducts.

However, because the Pons-Fleischmann results couldn't be repeated consistently--and since it was also discovered that they had not, in fact, observed any nuclear reaction byproducts--cold fusion has largely been rejected, and Pons and Fleischmann discredited, by the mainstream scientific community.

While there have been sporadic reports of LENR findings of "excess heat"--basically, that "something happened" that defies explanation--there is still no generally accepted theoretical model of cold fusion.

In fact, the notion of "cold fusion" can be something of a dead end, with virtually no one interested in funding serious research in the effort and reputable scientists leery of ruining their careers by pursuing what some might consider alchemy.

Two separate Department of Energy panels (first in 1989 and then again in 2004) largely dismissed the cold fusion theory and recommended against any sort of a new DOE program to adequately study it, although both did indicate that some sort of modest financial support for small experiments might be warranted.

Despite all this, the hope that cold fusion somehow works and that clean, abundant, free energy might be just around the corner has been an alluring siren call for a few researchers working quietly in the past two decades. And now, it seems, some relatively interesting players seem at least willing to test the waters to finally determine whether cold fusion is real and can be modeled and tested properly with real equipment…or whether it's just a myth after all.

The notion that some big players are showing interest in LENR has set the small community of researchers who have continued to investigate cold fusion buzzing. LENR is real, these researchers claim, even if cold fusion research is almost never published in peer-reviewed scientific journals. In short, they've been asking places like DOE or others to jump in the water with them and see if more than 100 largely unsubstantiated (and non-peer-reviewed) reports of observed excess heat effects by some unexplained interaction of hydrogen or deuterium with metals like nickel, platinum, or palladium mean something.

This small community of researchers working with tiny budgets claims that to have made substantial progress in the past few years. But it can't explain the observed effects within the current standard model. And no one can explain how transmuting one material into another at the nuclear level--e.g., nickel nano-powder and hydrogen into copper at low temperatures (freeing up excess energy at the atomic level with no harmful nuclear byproducts or radiation)--is feasible or even possible. But that hasn't stopped the patenting process, and there are a few now that explore LENR systems that use this process in concert with electromagnetic stimulation.

But what has inspired hope within this small community are several recent developments: LENR demonstration projects recently initiated at respected places like MIT, the University of Missouri, and the University of Bologna; public presentations by executives at one of the world's largest instrument companies, National Instruments, apparently designed to attract the top LENR researchers into a project to test and quantify observed LENR effects; and a July report from the European Commission's research and development center that LENR at least has sustainable future energy technology potential.

But near the top of the cold fusion research community's hit parade are musings from NASA, like the fact that the agency apparently filed two LENR-related patents last year and that a leading NASA scientist has indicated that LENR is real enough to pay attention to and study. Boeing and NASA may even be testing aircraft using LENR or other similar concepts.

The benefits of LENR would be obvious: It would be green, safe, and carbon-free, capable of cheaply replacing current energy sources. The most common experimental LENR tests use nickel and hydrogen--the most abundant metal and gas on Earth--in a non-combustion process to allegedly form copper plus energy. The promise alone is almost certainly why reputable, big players are at least paying attention now.

None of this says that cold fusion is real. None of this means that senior executives at big companies like Boeing or National Instruments or senior officials at federal agencies or departments like NASA, the U.S. Navy, or DOE are willing to commit publicly to spending meaningful taxpayer dollars on cold fusion research. In fact, the Navy reportedly shut down its LENR research in California earlier this year after a news report on its efforts led to unwanted publicity.

But it does beg the question: If some big players and research agencies think LENR is real enough to study, test, quantify and even patent, is cold fusion back in the game?
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Old 08-10-2012, 06:20 AM
phoebeisis phoebeisis is offline
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

500watthrs-enought to push a Volt maybe 1.5 miles at 60 mph?
Doesn't seem like much.
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Old 08-10-2012, 01:43 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

Where are people getting the 500kwh figure? I read it as 500 trillion watts/500 Terawatts.
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Old 08-10-2012, 01:52 PM
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Re: National Ignition Facility makes history with record 500 terawatt laser shot

You're right about that, Larry, but it was for a very short time, so the total energy wasn't that huge. Watts (and kW and Tw) only measures the energy for a given instant, but adding the hour part on the end (kWh) includes how long it was happening to sum up the total energy used.
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