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. Fukushima radioactive particle release was significant, says new research
    Scientists say there was a significant release of radioactive particles during the Fukushima-Daiichi nuclear accident. The researchers identified the contamination using a new method and say if the particles are inhaled they could pose long-term health risks to humans.
  2. Could a particle accelerator using laser-driven implosion become a reality?
    Scientists discovered a novel particle acceleration mechanism called 'Micro-bubble implosion,' in which super-high energy hydrogen ions (relativistic protons) are emitted at the moment when bubbles shrink to atomic size through the irradiation of hydrides with micron-sized spherical bubbles by ultraintense laser pulses.
  3. Nuclear physicists leap into quantum computing with first simulations of atomic nucleus
    Scientists have now simulated an atomic nucleus using a quantum computer. The results demonstrate the ability of quantum systems to compute nuclear physics problems and serve as a benchmark for future calculations.
  4. Quarks feel the pressure in the proton
    Inside every proton in every atom in the universe is a pressure cooker environment that surpasses the atom-crushing heart of a neutron star. That's according to the first measurement of a mechanical property of subatomic particles, the pressure distribution inside the proton.
  5. Radar reveals details of mountain collapse after North Korea's most recent nuclear test
    North Korea's Sept. 3, 2017, underground nuclear test -- it's latest and biggest -- created a 5.2 magnitude earthquake and 4.5 magnitude aftershock. Researchers combined synthetic aperture radar with seismic measurements to determine that the explosion pushed the mountain surface outward up to 11 feet and left it 20 inches shorter, probably after cavity collapse and subsequent compression of fractured rock. The aftershock may have been a tunnel collapse.
  6. Levitation yields better neutron-lifetime measurement
    Being repulsive can have its advantages. In the case of an experiment at Los Alamos National Laboratory's linear accelerator, a repulsive magnetic field and a clever detector system are allowing ultracold neutrons to be levitated so their actual lifetimes can be more accurately measured.
  7. Precision measurement of the proton's weak charge narrows the search for new physics
    A new result from the Q-weak experiment provides a precision test of the weak force, one of four fundamental forces in nature. The proton's weak charge was found to be QWp=0.0719±0.0045, in excellent agreement with Standard Model predictions. Because the proton's weak charge is so precisely predicted in this model, the new Q-weak result provides insight into predictions of hitherto unobserved heavy particles.
  8. Scientists discover the secret behind the stability of carbon isotopes
    An international research collaboration has provided experimental and theoretical evidence for the existence of the magic number of six in carbon isotopes. The researchers experimentally determined the radius of protons in the nuclei of different carbon isotopes. The results were combined with those of calculations and other data analyses, revealing that a proton number of six gave an isotope with high stability; that is, six is a magic number.
  9. Army's new find lowers accidental stockpile detonation
    Scientists at two major national laboratories have demonstrated a new method for testing explosives stored in weapons stockpiles, a step they say will help reduce accidental detonation and ensure the weapons perform as expected.
  10. Energy conversion: Speeding up material discovery
    Researchers have developed an algorithm that can discover and optimize thermoelectic materials for energy conversion in a matter of months, relying on solving quantum mechanical equations, without any experimental input.
  11. Balancing nuclear and renewable energy
    Researchers explore the benefits of adjusting the output of nuclear power plants according to the changing supply of renewable energy such as wind and solar power.
  12. Nuclear radiation detecting device could lead to new homeland security tool
    A research team has developed an exceptional next-generation material for nuclear radiation detection that could provide a significantly less expensive alternative to detectors now in commercial use. Specifically, the high-performance material is used in a device that can detect gamma rays, weak signals given off by nuclear materials, and can easily identify individual radioactive isotopes. Potential uses include more widespread detectors for nuclear weapons and materials as well as applications in biomedical imaging, astronomy and spectroscopy.
  13. By 2040, artificial intelligence could upend nuclear stability
    A new paper finds that artificial intelligence has the potential to upend the foundations of nuclear deterrence by the year 2040. While AI-controlled doomsday machines are considered unlikely, the hazards of artificial intelligence for nuclear security lie instead in its potential to encourage humans to take potentially apocalyptic risks, according to the paper.
  14. For nuclear weapons reduction, a way to verify without revealing
    Researchers have found a new way of verifying nuclear weapons reduction agreements without revealing secret information, using a physical cryptographic key and nuclear resonant phenomena.
  15. En route to the optical nuclear clock
    Researchers have performed the first-ever optical measurements of some important properties of the low-energy state of the Th-229 nucleus. In this way, a laser excitation of the atomic nucleus can be monitored, thus allowing an optical nuclear clock to be realized that 'ticks' more precisely than present-day atomic clocks.
  16. Water dynamics indicate tumor status
    How aggressive is a tumor? To measure the tumor status without taking tissue samples, researchers have developed a method based on magnetic resonance imaging (MRI) of whole body parts. The technique measures proton nuclear resonance dispersion profiles at low magnetic fields, which reveals the water exchange rate of the tumor cells. Thus, tumor development can be monitored rapidly and noninvasively.
  17. When nuclei catch up with electrons
    In an attosecond study of the H2 molecule physicists found that for light atomic nuclei -- as contained in most organic and biological molecules -- the correlation between electronic and nuclear motions cannot be ignored.
  18. Banking on sunshine: World added far more solar than fossil fuel power generating capacity in 2017
    Solar energy dominated global investment in new power generation like never before in 2017.
  19. Towards greater MRI sensitivity by harnessing quantum hyperpolarization
    Researchers have developed a technique which could increase the sensitivity of magnetic resonance imaging (MRI) for patient diagnosis.
  20. Unresolved puzzles in exotic nuclei
    Scientists discuss the structure of unstable and unbound forms of Helium, Lithium, and Beryllium nuclei that have unusually large neutron to proton ratios -- dubbed 'exotic' light nuclei. Many unstable atomic nuclei live long enough to be able serve as targets for further nuclear reactions -- especially in hot environments like the interior of stars.
  21. Pipe-crawling robot will help decommission DOE nuclear facility
    A pair of autonomous robots will soon be driving through miles of pipes at the US Department of Energy's former uranium enrichment plant in Piketon, Ohio, to identify uranium deposits on pipe walls.
  22. Chirping is welcome in birds but not in fusion devices
    Birds do it and so do doughnut-shaped fusion facilities called 'tokamaks.' But tokamak chirping -- a rapidly changing frequency wave that can be far above what the human ear can detect -- is hardly welcome to researchers who seek to bring the fusion that powers the sun and stars to Earth.
  23. Reconsidering damage production and radiation mixing in materials
    An international team of researchers present new mathematical equations that with minimal increase in computational complexity allow for accurate and experimentally testable predictions.
  24. Laser-heated nanowires produce micro-scale nuclear fusion
    Nuclear fusion, the process that powers our sun, happens when nuclear reactions between light elements produce heavier ones. It's also happening -- at a smaller scale -- in a lab. Using a compact but powerful laser to heat arrays of ordered nanowires, scientists have demonstrated micro-scale nuclear fusion in the lab. They have achieved record-setting efficiency for the generation of neutrons - chargeless sub-atomic particles resulting from the fusion process.
  25. Running on renewables: How sure can we be about the future?
    A variety of models predict the role renewables will play in 2050, but some may be over-optimistic, and should be used with caution, say researchers.
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