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Category: nuclear energy

Plutonium compound unlocks rare topological quantum behavior with potential nuclear science applications

Plutonium is one of the most complex elements in the periodic table. First synthesized and isolated in 1940 by scientists at the University of California, Berkeley, plutonium has been studied closely for more than eight decades. It’s most often associated with its role in nuclear security, but it’s also vital to nuclear power, where it is produced in reactors and can be recycled as fuel. Despite plutonium’s importance, some of its most fundamental behaviors remain a mystery.

Scientists at the Idaho National Laboratory (INL) have made an important discovery: A compound called plutonium hexaboride (PuB₆) exhibits a one-of-a-kind quantum property known as a topological Kondo insulating state. Published in Physical Review Research, this finding marks one of only a handful of times such behavior has been observed in a plutonium material—opening a new window for research into how some of nature’s most complex elements actually work.

First-of-a-kind laser spring opens up new avenues for plasma control

When a high-intensity laser interacts with plasma, the charged particles typically oscillate back and forth like waves on the ocean. But what if the laser itself could twist like a whirlpool? Researchers have now demonstrated a rotating, spring-shaped laser pulse, opening new possibilities for fusion energy, particle acceleration, astrophysics and beyond.

In new research published in Nature Photonics, scientists from Lawrence Livermore National Laboratory (LLNL) and the University of California, Irvine, demonstrated the first high-intensity “light spring” laser.

Unlike conventional laser beams, a light spring rotates around its central axis at a controllable rate. If shone onto a wall, the beam pattern would trace out circles over time.

New superconductors identified, unlocking process that could yield thousands more

An international team of quantum researchers has shown how machine learning can be used to filter a practically infinite number of possible material combinations to identify candidates for superconductivity. Thanks to the breakthrough, new superconductors can now be found much faster, says Aalto University Professor Päivi Törmä, who leads the SuperC consortium behind the research.

Superconductors carry electric current with zero resistance, thanks to a quantum effect appearing only at extremely low temperatures. They power not only quantum computers but many other things, from neuroimaging to fusion reactors and maglev trains.

However, these unicorn materials are prohibitively hard to identify. Any endlessly variable combination of elements could be a superconductor—yet few actually are. And the ones already discovered require expensive cooling equipment to bring them to the near-absolute-zero temperatures that give them their quantum properties.

The Intelligence Explosion is Coming

The race toward an imminent intelligence explosion has escalated from a sci-fi thought experiment into a high-stakes global debate.

Accelerating progress across model reasoning and compute infrastructure forces a critical question: is Artificial General Intelligence already arriving?

Silicon Valley insiders frequently claim human-level AI has passed us by, though critics warn these declarations are heavily warped by financial incentives.

If an AI system successfully achieves recursive self-improvement, the resulting technological singularity could compress centuries of human progress into mere hours.

A best-case takeoff promises staggering rewards like clean fusion energy, automated economic abundance, and radical medical breakthroughs that extend human lifespans indefinitely.

Modeling nuclear fusion at lightning speed

As we scour and scorch the Earth for deeper wells of energy, investors and government agencies are pouring billions into nuclear fusion research. The hope is that fusion may ultimately provide a virtually limitless source of clean energy.

And there’s reason to hope.

Fusion powers the stars, including our sun, and scientists have recently shown that it’s feasible to replicate this reaction here on Earth.

Alzheimer’s Protein APP Acts as Vital Shield for Neurons

Author: Hideaki Matsui Source: Niigata University Contact: Hideaki Matsui – Niigata University Image: The image is credited to Neuroscience News.

Original Research: Closed access. “A protective role for APP in nuclear waste clearance via lysosomal exocytosis” by Dougnon G, Otsuka T, Nakamura Y, Sakai A, Yamanaka T, Matsui N, Nakahara A, Ito A, Hatano A, Matsumoto M, Igarashi H, Kakita A, Ueno M, Matsui H. PNAS DOI:10.1073/pnas.

Abstract.

Fusion reactors could be monitored for covert plutonium production

In the next few decades, many physicists are hopeful that nuclear fusion could become a realistic source of practically limitless energy. But before this can happen, it will be critical to ensure that reactors cannot be covertly misused to produce materials for nuclear weapons.

Through new analysis published in Physical Review Applied, a team led by Patrick Huber at Virginia Tech has shown that an existing type of particle detector could be used to flag any such misuse.

From Supernova Physics to Fusion Energy: The Laser Experiments Changing Science — Dr. Mario Manuel

Fusion energy is no longer just science fiction — it’s becoming experimental reality. Dr. Mario Manuel, Ph.D. — General Atomics.

What if we could recreate the inside of a star — not in theory, but inside a laboratory on Earth using the world’s most powerful lasers?

Dr. Mario Manuel, Ph.D. is a plasma physicist and laser-science researcher at whose work sits at the frontier of fusion energy, laboratory astrophysics, high-energy-density physics, and advanced laser diagnostics. Trained in applied plasma physics and aerospace engineering, Dr. Manuel has spent his career developing new ways to visualize and understand the extreme electromagnetic environments created when ultra-powerful lasers interact with matter.

Dr. Manuel’s research has spanned some of the most ambitious scientific efforts underway today — from inertial fusion energy and plasma-instability control to recreating supernova-like shock waves in the laboratory and generating ultra-intense gamma-ray and particle beams using petawatt-class lasers.

Early in his career, Dr. Manuel helped pioneer advanced proton-radiography techniques capable of imaging invisible electric and magnetic fields inside laser-produced plasmas, work that opened new windows into the turbulent physics that can either enable or destroy fusion reactions.

Continue reading “From Supernova Physics to Fusion Energy: The Laser Experiments Changing Science — Dr. Mario Manuel” | >

Collapsing stars could spawn mini-universes, offering new path to gravastars

Stars shine because atoms fuse in their interiors, releasing energy. When a very massive star has exhausted its nuclear fuel, radiation pressure can no longer provide sufficient counterforce to gravity. The star then collapses under its own mass until only a single point remains: the singularity.

While the formation of a black hole appears plausible, black holes themselves continue to pose major challenges for science. How can 10 billion solar masses concentrate at a single tiny point? How can spacetime be curved infinitely at that point, the singularity? At this stage, the laws of physics break down, making it impossible to predict what happens. Moreover, black holes conceal all information from observation: Everything, including light, disappears irretrievably beyond the event horizon.

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