Part 1 of 2 Parts
In the pursuit of clean and endless energy, nuclear fusion is a promising option. In fusion reactors, scientists attempt to make energy by fusing atoms together. They are trying to mimic the sun’s power generation process where things can get extremely hot. To deal with this, researchers have been diving deep into the science of heat management. Their focus is on a special metal called tungsten.
Tungsten is a chemical element; it has symbol “W” and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternative name.
Tungsten occurs in many alloys, which have numerous applications, including incandescent light bulb filaments, X-ray tubes, electrodes in gas tungsten arc welding, superalloys, and radiation shielding. Tungsten’s hardness and high density make it suitable for military applications in penetrating projectiles. Tungsten compounds are often used as industrial catalysts.
Scientists at the Department of Energy’s SLAC National Accelerator Laboratory are leading new research into tungsten. Their research highlights tungsten’s potential to significantly improve fusion reactor technology based on new findings about its ability to conduct heat. It is hoped that this advancement could accelerate the development of more efficient and resilient fusion reactor materials. Their results were published today in Science Advances.
Siegfried Glenzer is a director of the High Energy Density Division at SLAC and a collaborator in the new research. He said, “What excites us is the potential of our findings to influence the design of artificial materials for fusion and other energy applications. Our work demonstrates the capability to probe materials at the atomic scale, providing valuable data for further research and development.”
Tungsten is very strong, can handle incredibly high temperatures, and doesn’t get warped or weakened by heat waves as much as some other metals. This makes it especially effective at conducting heat away quickly and efficiently. This is exactly what’s needed in the super-hot conditions of a fusion reactor. Rapid heat loading of tungsten and its alloys is also found in many aerospace applications. These include rocket engine nozzles, heat shields and turbine blade coatings.
Understanding how tungsten works with heat offers hints on how to make new materials for fusion reactors that will be even better at keeping cool under pressure. In this research, the scientists developed a new way to closely examine the details of how tungsten manages heat at the atomic level.
In physics, a phonon is a collective excitation in a periodic, elastic arrangement of atoms of molecules in condensed matter, specifically in solids and some liquids. A type of quasiparticle, a phonon is an excited state in the quantum mechanical quantization of the modes of vibrations for elastic structures of interacting particles. Phonons can be thought of as quantized sound waves, similar to photons as quantized light waves.
The study of phonons is an important part of condensed matter physics. They play a major role in many of the physical properties of condensed matter systems, such as thermal conductivity and electrical conductivity, as well as in models of neutron scattering and related effects.
Please read Part 2 next
Blog
-
Nuclear Reactors 1356 – Researches At The Department Of Energy Study How Tungsten Conducts Heat – Part 1 of 2 Parts
-
Nuclear News Roundup March 19, 2024
Treasury hearing told to incentivize nuclear for hydrogen under IRA rules h2-view.com
Sellafield’s head of information security to step down theguardian.com
UK Reinforces Nuclear Deterrence Requirement With Long-Term Capability Approach navalnews.com
Iraq, Russia discuss developing nuclear energy for peaceful uses iraqinews.com
-
Geiger Readings for March 19, 2024
Ambient office = 126 nanosieverts per hour
Ambient outside = 129 nanosieverts per hour
Soil exposed to rain water = 129 nanosieverts per hour
Ginger root from Central Market = 87 nanosieverts per hour
Tap water = 100 nanosieverts per hour
Filter water = 94 nanosieverts per hour
-
Nuclear Fusion 67 – Longview Fusion Energy Systems Has Contracted The Fluor Corporation To Design The First Commercial Laser Fusion Power Plant
Longview Fusion Energy Systems has contracted U.S. engineering and construction firm Fluor Corporation to design the world’s first commercial laser fusion power plant.
Longview said, “Fluor will leverage its global experience in developing and constructing complex, large-scale facilities to provide preliminary design and engineering to support the development of Longview’s fusion-powered plant.”
Longview noted that, unlike other approaches, it does not need to build a physics demonstration facility, and, with its partner Fluor, “can focus on designing and building the world’s first laser fusion energy plant to power communities and businesses”.
The historic breakthroughs in fusion energy gain at the Lawrence Livermore National Laboratory’s (LLNL) National Ignition Facility (NIF) have enabled their project.
Nuclear fusion is the process by which two light nuclei combine to form a single heavier nucleus. A huge amount of energy is released during fusion. LLNL has been pursuing the use of lasers to induce fusion in a laboratory setting since the 1960s. They built a series of increasingly powerful laser systems at the California lab and created the National Ignition Facility (NIF), described as the world’s largest and most energetic laser system. The NIF uses high-power laser beams to create temperatures and pressures similar to those found in the cores of stars and giant planets – and inside nuclear explosions.
On 5 December of 2022, the NIF achieved the first ever controlled experiment to produce more energy from fusion than the laser energy used to drive the reaction. The experiment utilized one hundred and ninety-two laser beams to deliver more than two million joules of ultraviolet energy to a deuterium-tritium fuel pellet to create so-called fusion ignition – also referred to as scientific energy breakeven. In achieving an output of three point one five megajoules of fusion energy from the delivery of two point zero five megajoules to the fuel target. The experiment demonstrated the fundamental science basis for inertial confinement fusion energy (IFE) for the first time.
Longview says it is the only fusion energy company using this verified approach. Its power plant designs include commercially available technologies from the semiconductor and other industries. Longview says that this is to ensure the delivery of carbon-free, safe, and economical laser fusion energy to the marketplace within a decade.
Valerie Roberts is Longview’s Chief Operating Officer and former National Ignition Facility construction/project manager. She said, “We are building on the success of the NIF, but the Longview plant will use today’s far more efficient and powerful lasers and utilize additive manufacturing and optimization through AI.”
Edward Moses is Longview’s CEO and former director of the NIF. He added, “Laser fusion energy gain has been demonstrated many times over the last 15 months, and the scientific community has verified these successes. Now is the time to focus on making this new carbon-free, safe, and abundant energy source available to the nation as soon as possible.”
In April of 2023, Fluor signed a memorandum of understanding with Longview to be its engineering and construction collaborator in designing and planning laser fusion energy commercialization.
Longview’s plan is for the development of laser fusion power plants. They will have the capacity of up to sixteen hundred MW to provide electricity or industrial production of hydrogen fuel and other materials that can help to decarbonize heavy industry. -
Nuclear News Roundup March 18, 2024
Iranian Cleric Calls For Nuclear Arms iranintl.com
Permit issued for dismantling of Isar 2 world-nuclear-news.org
Fourth Barakah unit connected to grid world-nuclear-news.org
Kenya agency outlines nuclear development strategy world-nuclear-news.org
-
Geiger Readings for March 18, 2024
Ambient office = 106 nanosieverts per hour
Ambient outside = 143 nanosieverts per hour
Soil exposed to rain water = 151 nanosieverts per hour
Green onion from Central Market = 131 nanosieverts per hour
Tap water = 84 nanosieverts per hour
Filter water = 73 nanosieverts per hour
-
Geiger Readings for March 17, 2024
Ambient office = 138 nanosieverts per hour
Ambient outside = 111 nanosieverts per hour
Soil exposed to rain water = 110 nanosieverts per hour
Garlic from Central Market = 68 nanosieverts per hour
Tap water = 81 nanosieverts per hour
Filter water = 70 nanosieverts per hour
-
Nuclear News Roundup March 16, 2024
Contract for removal of Mühleberg reactor vessel world-nuclear-news.org
Bannerman completes scoping study for extended operations at Etango world-nuclear-news.org
Extrusion demo is milestone for Lightbridge Fuel fabrication world-nuclear-news.org
Haiyang 3 containment takes shape world-nuclear-news.org
-
Geiger Readings for March 16, 2024
Ambient office = 143 nanosieverts per hour
Ambient outside = 106 nanosieverts per hour
Soil exposed to rain water = 107 nanosieverts per hour
Mini cucumber from Central Market = 104 nanosieverts per hour
Tap water = 70 nanosieverts per hour
Filter water = 59 nanosieverts per hour
Dover Sole from Central = 113 nanosieverts per hour