Nuclear Energy News -- ScienceDaily

Nuclear Energy Research. Nuclear power, fission and fusion, tabletop accelerators, and more. Read the latest scientific research on nuclear energy.
Nuclear Energy News -- ScienceDaily
  1. Shedding (high-power laser) light on the plasma density limit
    Researchers theoretically proposed the existence of density limit for hole boring by laser light on matter. They derived the maximum plasma density as a function of laser intensity, where hole boring stops and plasma blowout occurs. Theory and simulation of an ultra-high-pressure plasma state, wherein plasma's density pushes light back in the direction of the laser source, contribute to fundamental understanding, and provided grounding for applications such as laser-induced nuclear fusion.
  2. New method to replicate harsh conditions for testing materials
    Confining a plasma jet can be stress-inducing... especially on the materials especially for shielding materials. Noting the limits inherent in the test methods currently used for these materials, scientists have proposed a ground-breaking new solution: using laser-accelerated particles to stress test materials subject to harsh conditions.
  3. Faster, cheaper, nano-based manufacturing
    Engineers are developing a new method of processing nanomaterials that could lead to faster and cheaper manufacturing of flexible thin film devices -- from touch screens to window coatings, according to a new study. The 'intense pulsed light sintering' method uses high-energy light over an area nearly 7,000 times larger than a laser to fuse nanomaterials in seconds.
  4. New turbulent transport modeling shows multiscale fluctuations in heated plasma
    Researchers used a 'reduced physics' fluid model of plasma turbulence to explain unexpected properties of the density profile inside a tokamak experiment. Modeling plasma's turbulent behavior could help scientists optimize the tokamak performance in future fusion reactors like ITER.
  5. Captured electrons excite nuclei to higher energy states
    For the first time, scientists demonstrated a long-theorized nuclear effect called nuclear excitation by electron capture. This advance tests theoretical models that describe how nuclear and atomic realms interact and may also provide new insights into how star elements are created.
  6. Researchers run first tests of unique system for welding highly irradiated metal alloys
    Scientists are conducting tests of a new system that will allow researchers to advance welding technologies for repair of irradiated materials by developing processing conditions and evaluating post-weld materials properties.
  7. Helping authorities respond more quickly to airborne radiological threats
    A new technique uses existing technologies to detect potential airborne radiological materials in hours instead of days.
  8. Lithium -- it's not just for batteries: It can also reduce instabilities in fusion plasmas
    Scientists have found that lithium powder can eliminate instabilities known as edge-localized modes (ELMs) when used to coat a tungsten plasma-facing component called the 'divertor.'
  9. New discovery could improve organic solar cell performance
    Scientists have solved a mystery that could lead to gains in efficiency for organic solar cells.
  10. Pathway opens to minimize waste in solar energy capture
    Researchers have made an important discovery with significant implications for the future of solar cell material design.
  11. Nuclear power plants must be able to withstand fires caused by aircraft impacts
    Researches examined the transport, evaporation and combustion of liquids in large-scale fire incidents.
  12. Quantum leap: Computational approach launches new paradigm in electronic structure theory
    A group of researchers specializing in quantum calculations has proposed a radically new computational approach to solving the complex many-particle Schrödinger equation, which holds the key to explaining the motion of electrons in atoms and molecules.
  13. Neutrons inspect salt-inclusion materials to improve long-term hazardous waste storage
    A team of researchers is using neutrons to develop more durable and efficient materials called waste forms for safely storing hazardous substances.
  14. New model considers an extra factor to improve our prediction of nuclear fission
    Researchers have proposed an improved model for predicting the generation of thermal energy from nuclear fission processes, by focusing on Uranium-236. This model can help improve efficiency in nuclear power generation.
  15. The origin of water's unusual properties found
    Using x-ray lasers, researchers have been able to map out how water fluctuates between two different states when it is cooled. At -44°C these fluctuations reach a maximum pointing to the fact that water can exist as two different distinct liquids.
  16. Artificial intelligence helps accelerate progress toward efficient fusion reactions
    Before scientists can effectively capture and deploy fusion energy, they must learn to predict major disruptions that can halt fusion reactions and damage the walls of doughnut-shaped fusion devices called tokamaks. Timely prediction of disruptions, the sudden loss of control of the hot, charged plasma that fuels the reactions, will be vital to triggering steps to avoid or mitigate such large-scale events. Today, researchers are employing artificial intelligence to improve predictive capability.
  17. Newly declassified nuclear test videos released
    Researchers at Lawrence Livermore National Laboratory (LLNL) released 62 newly declassified videos today of atmospheric nuclear tests films that have never before been seen by the public.
  18. Laser-boron fusion now 'leading contender' for energy
    Scientists argue that the path to hydrogen-boron fusion is now viable, and may be closer to realization than other approaches, such as the deuterium-tritium fusion approach currently being pursued.
  19. New instrument identifies unexploded artillery shells
    Society faces threats through the malicious use of chemical, biological, radiological, nuclear and/or explosive (CBRNE) materials. The detection of illicit trafficking or other criminal acts, as well as many security and safety applications, call for novel material analysis techniques and instruments. These detection systems should be non-destructive but still be able to detect and identify the threat objects, even from inside a shielding or masking enclosure. Active interrogation methods that use penetrative particle beams can reveal the presence of CBRNE materials.
  20. United States has lost dominance in highly intense, ultrafast laser technology to Europe and Asia, new report finds
    The U.S. is losing ground in a second laser revolution of highly intense, ultrafast lasers that have broad applications in manufacturing, medicine, and national security, says a new report. Currently, 80 percent to 90 percent of the high-intensity laser systems are overseas, and all of the highest power research lasers currently in construction or already built are overseas as well.
  21. Physicists propose a new method for monitoring nuclear waste
    New scientific findings suggest neutrino detectors may play an important role in ensuring better monitoring and safer storage of radioactive material in nuclear waste repository sites.
  22. Uranium to replace plastic? Chemistry breakthrough could pave the way for new materials
    Uranium can perform reactions that previously no one thought possible, which could transform the way industry makes bulk chemicals, polymers, and the precursors to new drugs and plastics, according to new findings.
  23. Predictive framework, thick skin of atomic nucleus discovered by chemistry, physics research group
    A cross-disciplinary research team has discovered both a framework to predict where neutrons will inhabit a nucleus and a way to predict the skin thickness of a nucleus.
  24. How Earth stops high-energy neutrinos in their tracks
    For the first time, a science experiment has measured Earth's ability to absorb neutrinos -- the smaller-than-an-atom particles that zoom throughout space and through us by the trillions every second at nearly the speed of light. The experiment was achieved with the IceCube detector, an array of 5,160 basketball-sized sensors frozen deep within a cubic kilometer of very clear ice near the South Pole.
  25. Homes should not be abandoned after a big nuclear accident, study suggests
    Few people, if any, should be asked to leave their homes after a big nuclear accident, which is what happened in March 2011 following the Fukushima Daiichi nuclear disaster, new research recommends.
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