Sep 282013
 

image (9)

Not Quite Yet, but in the Journal “Physics of Plasmas,” Researchers from National Ignition Facility Show Just How Close We’ve Come

The dream of igniting a self-sustained fusion reaction with high yields of energy, a feat likened to creating a miniature star on Earth, is getting closer to becoming reality, according the authors of a new review article in the journal Physics of Plasmas.

Researchers at the National Ignition Facility (NIF) engaged in a collaborative project led by the Department of Energy’s Lawrence Livermore National Laboratory, report that while there is at least one significant obstacle to overcome before achieving the highly stable, precisely directed implosion required for ignition, they have met many of the demanding challenges leading up to that goal since experiments began in 2010.

The project is a multi-institutional effort including partners from the University of Rochester’s Laboratory for Laser Energetics, General Atomics, Los Alamos National Laboratory, Sandia National Laboratory, and the Massachusetts Institute of Technology.

To reach ignition (defined as the point at which the fusion reaction produces more energy than is needed to initiate it), the NIF focuses 192 laser beams simultaneously in billionth-of-a-second pulses inside a cryogenically cooled hohlraum (from the German word for “hollow room”), a hollow cylinder the size of a pencil eraser. Within the hohlraum is a ball-bearing-size capsule containing two hydrogen isotopes, deuterium and tritium (D-T). The unified lasers deliver 1.8 megajoules of energy and 500 terawatts of power—1,000 times more than the United States uses at any one moment—to the hohlraum creating an “X-ray oven” which implodes the D-T capsule to temperatures and pressures similar to those found at the center of the sun.

“What we want to do is use the X-rays to blast away the outer layer of the capsule in a very controlled manner, so that the D-T pellet is compressed to just the right conditions to initiate the fusion reaction,” explained John Edwards, NIF associate director for inertial confinement fusion and high-energy-density science. “In our new review article, we report that the NIF has met many of the requirements believed necessary to achieve ignition—sufficient X-ray intensity in the hohlraum, accurate energy delivery to the target and desired levels of compression—but that at least one major hurdle remains to be overcome, the premature breaking apart of the capsule.”

Read more . . .

 

The Latest on: Fusion
  • REVIEW: Ford Fusion combines style and value
    on August 21, 2017 at 11:10 am

    The mid-sized sedan market is one of the most competitive and difficult segments, mainly because there are so many good choices out there and consumers are very finicky. With great cars like the Toyota Camry, Honda Accord, and many others, how would one ... […]

  • STMicroelectronics' BlueCoin, Now Available at Mouser, Provides Voice-Over-BLE and Sensor Fusion in One Module
    on August 21, 2017 at 9:43 am

    August 21, 2017 - Mouser Electronics, Inc., the industry's leading New Product Introduction (NPI) distributor with the widest selection of semiconductors and electronic components, is now stocking the BlueCoin hearing and motion sensing platform from ... […]

  • Explore Global fusion machine industry forecast to 2021
    on August 21, 2017 at 8:10 am

    The Fusion Machine industry development trends and marketing channels are analyzed. Finally the feasibility of new investment projects are assessed and overall research conclusions offered. The Global Fusion Machine Industry 2017 Market Research Report is ... […]

  • Kool Tools: Smart Fusion guitar
    on August 21, 2017 at 5:11 am

    The line of $1,399 Fusion Guitars (www.fusionguitars.com) are now available online to musicians in the U.S. Billed as "the world's most advanced electric guitar" they allow musicians to unplug, learn and create music just about anywhere. ° Incorporating ... […]

  • Avoiding disruptions that halt fusion reactions
    on August 21, 2017 at 5:02 am

    A cutaway of the lower divertor region of the National Spherical Torus Experiment in a simulation of a disruption. The red and blue colors indicate electrical “halo” currents into the walls of the tokamak. The rope-like structures show the paths of ... […]

  • New 2017 Ford Fusion Hybrid SE
    on August 21, 2017 at 4:02 am

    Price comparisons are based on all New 2017 Ford Fusion Hybrid SE Sedans for sale on Cars.com within a 200 mile radius. Vehicles price significantly higher or lower than the national average are excluded from this comparison. Have questions about pricing ... […]

  • Tickets still available for Fusion Festival at Otterspool Promenade
    on August 21, 2017 at 3:35 am

    The Fusion Festival is just a dozen days away and honeyed harmonies and banging beats are set to fill the air all over Otterspool promenade. There will be a big line-up at the festival with UK exclusive festival performances from BRIT Award-winners Little ... […]

  • Fusion-Ha! WWE Superstars Use Dragon Ball Z Fusion Dance
    on August 20, 2017 at 1:00 am

    Most Dragon Ball Z fans are guilty of trying out Goku’s Kamehameha wave in real life, however, not many people have tried using one of Goku’s technique in a real fight. But it turns out that WWE Superstars Cesaro and Sheamus thought they should give it ... […]

  • Discovered: A quick and easy way to shut down instabilities in fusion devices
    on August 18, 2017 at 12:13 pm

    Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built to create a "star in a jar." The findings, published in June in the journal Physical Review Letters ... […]

  • Non Fusion Spinal Devices Market Globally Expected to Drive Growth through 2025
    on August 18, 2017 at 9:50 am

    Spinal implants are devices used to treat disproportion of spine, provide stability and strengthen the spine of patients. These devices are broadly segmented as fusion and non-fusion spinal devices. Non-fusion technologies into spinal surgery has improved ... […]

via Google News and Bing News

Other Interesting Posts

Leave a Reply

%d bloggers like this: