Menu

Blog

Archive for the ‘nuclear energy’ category: Page 39

Dec 27, 2022

Giant laser from ‘Star Trek’ to be tested in fusion breakthrough

Posted by in categories: innovation, nuclear energy

The breakthrough came in an impossibly small slice of time, less than it takes a beam of light to move an inch. In that tiny moment, nuclear fusion as an energy source went from far-away dream to reality. The world is now grappling with the implications of the historic milestone. For Arthur Pak and the countless other scientists who’ve spent decades getting to this point, the work is just beginning.

Pak and his colleagues at Lawrence Livermore National Laboratory are now faced with a daunting task: Do it again, but better—and bigger.

That means perfecting the use of the world’s largest laser, housed in the lab’s National Ignition Facility that science-fiction fans will recognize from the film “Star Trek: Into Darkness,” when it was used as a set for the warp core of the starship Enterprise. Just after 1 a.m. on Dec. 5, the laser shot 192 beams in three carefully modulated pulses at a cylinder containing a tiny diamond capsule filled with hydrogen, in an attempt to spark the first fusion reaction that produced more than it took to create. It succeeded, starting the path toward what scientists hope will someday be a new, carbon-free power source that will allow humans to harness the same source of energy that lights the stars.

Dec 27, 2022

More Energy Output Than Input Marks a Leap Forward for Fusion Energy Research

Posted by in categories: innovation, nuclear energy

Lawrence Livermore National Lab fires 192 lasers at a fuel pellet and yields 1.5 times more energy output than input, a fusion breakthrough.

Dec 18, 2022

Hot salt, clean energy: How artificial intelligence can enhance advanced nuclear reactors

Posted by in categories: climatology, nuclear energy, robotics/AI, solar power, sustainability

Technology developed at Argonne can help narrow the field of candidates for molten salts, a new study demonstrates.

Scientists are searching for new materials to advance the next generation of nuclear power plants. In a recent study, researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory showed how artificial intelligence could help pinpoint the right types of , a key component for advanced nuclear reactors.

The ability to absorb and store heat makes important to and national climate goals. Molten salts can serve as both coolant and fuel in nuclear power reactors that generate electricity without emitting greenhouse gases. They can also store large amounts of energy, which is increasingly needed on an electric grid with fluctuating sources such as wind and solar power.

Dec 18, 2022

How one small European country could hold the key to energy self-sufficiency

Posted by in categories: business, military, nuclear energy

The three major lessons on energy security.

On October 19, European Commission president Ursula von der Leyen announced that the EU had replaced two-thirds of its Russian gas imports since February by switching to other suppliers. Such a turnaround seemed unattainable last spring when the invasion of Ukraine turned Moscow from an EU business partner into a military threat.


Despite the EU’s reduction of its energy dependence on Russia, there is work to be done in the long term. To achieve autonomy from Russian energy, the Union could learn from the experience of one of its members, Lithuania – a country which, since declaring its independence from the USSR in 1990, has been able to adapt to a complex geopolitical context to ensure its energy security.

Continue reading “How one small European country could hold the key to energy self-sufficiency” »

Dec 18, 2022

Nuclear fusion triggers an overreaction

Posted by in categories: nuclear energy, particle physics

Fusion News overblown.


NEW YORK, Dec 13 (Reuters Breakingviews) — A fusion breakthrough unveiled on Tuesday by the U.S. Department of Energy is a scientific tour de force, and a commercial irrelevancy.

It’s a notable feat that researchers produced more energy from fusing atoms together than they used to start the process. The development has been an elusive goal since the 1930s, promising essentially limitless power from cheap hydrogen found in seawater. One gram of hydrogen theoretically contains as much energy as burning about 10 tons of coal.

Continue reading “Nuclear fusion triggers an overreaction” »

Dec 17, 2022

Nuclear fusion: How scientists can improve after latest breakthrough

Posted by in categories: innovation, nuclear energy

U.S. Department of Energy.

The U.S. Department of Energy said on December 13, 2022, that for the first time – and after several decades of trying – scientists have managed to get more energy out of the process than they had to put in.

Dec 14, 2022

National Ignition Facility demonstrates net fusion energy gain in world first

Posted by in category: nuclear energy

After six decades we have finally reached controlled fusion “ignition.” Here is how it works and what it means (and doesn’t mean):

At the Lawrence Livermore National Lab (LLNL) the National Ignition Facility (NIF) starts with the Injection Laser System (ILS), a ytterbium-doped optical fiber laser (Master Oscillator) that produces a single very lower power, 1,053 nanometer (Infrared Light) beam. This single beam is split into 48 Pre-Amplifiers Modules (PAMs) that create four beams each (192 total). Each PAM conducts a two-stage amplification process via xenon flash lamps.


Surpassing energy breakeven at US facility constitutes a “Wright brothers moment” for fusion research, say researchers.

Continue reading “National Ignition Facility demonstrates net fusion energy gain in world first” »

Dec 14, 2022

Nuclear fusion lab achieves ‘ignition’: What does that mean, and why is it so important?

Posted by in categories: innovation, nuclear energy

Scientists have been striving to achieve fusion ignition for decades.

Scientists from the Lawrence Livermore National Laboratory (LLNL) announced a major breakthrough for nuclear fusion on Tuesday, December 13. In a historic first, they achieved fusion ignition during a nuclear fusion experiment. This means they produced more energy than they put into their fusion experiment, paving the way for practically limitless clean energy production from nuclear fusion.

Continue reading “Nuclear fusion lab achieves ‘ignition’: What does that mean, and why is it so important?” »

Dec 13, 2022

Scientists Achieve Nuclear Fusion Breakthrough With Blast of 192 Lasers

Posted by in categories: innovation, nuclear energy

😗


The advancement by Lawrence Livermore National Laboratory researchers will be built on to further develop fusion energy research.

Dec 13, 2022

A New Day Awaits Solar Neutrinos

Posted by in categories: nuclear energy, particle physics

Measurements of solar neutrinos proved that our star is powered by nuclear reactions and has brought to light many other details about the Sun’s inner workings. They also led to the discovery of neutrino oscillations—a phenomenon that is difficult to reconcile with established theories. Current neutrino research mostly relies on neutrinos generated on Earth by reactors and accelerators. But some physicists argue that there is still a lot to be done with neutrinos generated in the Sun. A new generation of solar-neutrino experiments may help in solving outstanding questions about both neutrinos and solar physics, these scientists say.

The study of solar neutrinos began in the late 1960s. Using a detector filled with dry-cleaning fluid and placed in South Dakota’s Homestake gold mine, physicist Raymond Davis and his colleagues observed the first neutrino signal from the Sun. They were surprised, however, to find that the number of neutrinos was one third of what models predicted—a mystery that led to a “neutrino gold rush,” with many new experiments staking claims to different energy and length scales related to the neutrino behavior. Eventually, physicists explained the missing neutrinos as resulting from oscillations between neutrino flavors (see Nobel Focus: Neutrino and X-ray Vision). These oscillations implied that neutrinos have mass, in tension with the standard model of particle physics.

The study of neutrino oscillations continues with efforts to pin down the neutrino masses and mixing parameters that determine the oscillating behavior. The main target, however, is no longer solar neutrinos. “The majority of the community, by a large margin, is focused on accelerator neutrinos,” says Michael Smy from the University of California, Irvine. The reason for this shift, he says, is that an accelerator experiment can explore higher-energy neutrinos and control the source-detector distance over which oscillations may occur. Researchers can also switch the accelerator on and off, which helps remove certain backgrounds.

Page 39 of 135First3637383940414243Last