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Nuclear, Chem, and Isotopic S&T
LLNL’s Forensic Science Center develops a new capability to detect chemical weapons
In the aftermath of suspected chemical attacks, investigators from the Organization for the Prohibition of Chemical Weapons (OPCW) step in to collect chemical, environmental and biomedical samples. Thorough forensic laboratory analysis of these samples is essential for proving what — if any — chemical agents were used and verifying their identities. Researchers at Lawrence…
Livermorium Day: celebrating big ideas, team science and partnerships
Lawrence Livermore National Laboratory (LLNL) and the City of Livermore share an honor few places can claim — a spot on the periodic table of elements. Leaders from LLNL and the city came together with students, educators and the community to celebrate this at Livermorium Day. This unique event took place in a unique location: Livermorium Plaza in the city’s downtown. “The…
Analyze an asteroid sample in the latest episode of the Big Ideas Lab
In the early 2000s, a team of planetary scientists at NASA began planning something audacious. They would build a spacecraft. Aim it at an asteroid. Launch it across more than a billion miles of space. Map the asteroid’s rugged terrain at an unprecedented, centimeter-level resolution. Hover over the surface to collect a sample. And then bring it all the way home. The…
Meet the machines that matter: the Electron Beam Ion Trap
Imagine listening to an orchestra: overlapping notes, blended timbres and complex harmonies coming together into a cohesive symphony. Now try to isolate a single instrument and the sounds it produces. Nearly impossible, right? The same is true for collections of ions, charged particles that have gained or lost electrons. Each ion — from hydrogen to lithium to lead and…
Roll the tape: LLNL captures inception of hydrogen-uranium reaction for the first time
When hydrogen gas interacts with uranium metal, the combination creates a chemically reactive powder and a runaway reaction that is difficult to stop. The result can impact the safety and lifespan of technology critical for fusion energy, hydrogen storage and nuclear fuels. In a recent study published in npj Materials Degradation, researchers from Lawrence Livermore…
LLNL scientists use controlled experiments to better understand nuclear fallout
In less than a millionth of a second after a nuclear detonation or a severe nuclear reactor accident, an enormous burst of energy heats the surrounding air and materials. Everything in the vicinity is vaporized into a hot, glowing cloud of gas and plasma. As that nuclear fireball expands, it mixes with air, begins to cool and condenses into tiny solid particles — creating…
Revitalized laser technology captures commercialization grant
Small, modular nuclear fission reactors and fusion facilities could each be the future of resilient and secure energy in the U.S. and around the world. But these technologies rely on isotopes of lithium to cool fission reactors and create fusion fuel. Currently, there is no sustained, domestic production mechanism for lithium isotopes in the U.S. that meets projected…
Four decades after Chernobyl, National Atmospheric Release Advisory Center reflects on a defining moment
Documents were scattered across the floor as scientists hurriedly reviewed reports on weather patterns and radiation measurements, while colleagues in Europe awaited updates and information on the emerging radioactive crisis. Forty years later, the Chernobyl reactor accident response stands as critical experience that paved the way for what is now the National Atmospheric…
Big Ideas Lab podcast explores JASPER and the science of measuring plutonium under extreme conditions
In less than a microsecond, a projectile traveling thousands of meters per second strikes its target, generating pressures and temperatures too extreme to observe directly. At Lawrence Livermore National Laboratory (LLNL), scientists use that moment to answer complex questions for national security. The latest episode of the Big Ideas Lab podcast takes listeners to the…
Weapons Physics & Design ACT awards drive university partnerships and research
Lawrence Livermore National Laboratory (LLNL) has announced five research teams selected for awards through the Lab’s FY26 Academic Collaboration Team (ACT) annual call for proposals. Awards support university research partners for up to three years to perform research in collaboration with Lab scientists and offer an important way to build long-term connections with…
Grad student Wyatt Larrinaga explores how proteins bind to radioactive elements for fellowship at LLNL
As a fifth-year graduate student at the Pennsylvania State University, Wyatt Larrinaga investigates how proteins can be used to separate lanthanides. These elements, plus two others, make up the rare earth elements that are critical for technology, defense and a robust domestic energy supply. But somewhere along the way, Larrinaga grew interested in branching out. Or,…
LLNL delivers advanced gamma-ray spectrometer for NASA’s Dragonfly mission to explore Titan
Hundreds of millions of miles away from Earth, the landscape of Titan, Saturn’s largest moon, bears a striking resemblance to our own planet — but with dunes of hydrocarbon sands rather than silica sands, and rain, rivers, lakes and seas of liquid methane and ethane rather than liquid water. The NASA Dragonfly mission is set to explore this world in unprecedented detail…
Cryogenic micro-calorimetry offers a novel material-dating method for nuclear forensics and safeguards
The moment nuclear material is produced, processed or purified, it sets off a hidden countdown, marked by the half-life of its radioactive atoms as they begin to decay. For scientists tracking the origins of these substances, decoding this natural clock is crucial for verifying material histories in support of global security efforts. In a new study published in the…
Keeping the public safe at the big game: LLNL’s RAP team deploys to Santa Clara, California
As thousands of fans streamed toward Levi’s Stadium for the Super Bowl between the Seattle Seahawks and New England Patriots, vendors hawked memorabilia, the scent of garlic fries filled the air and security officers checked clear bags beneath white tents. Somewhere in that crowd, walking the same sidewalks and concourses, were a handful of team members carrying gear…
Americium, curium and californium — oh my! Crystallizing the rarest elements at LLNL
Actinides are a group of heavy, radioactive elements that include uranium, plutonium, americium, curium, berkelium and californium. Understanding how these elements bond with other atoms (known as coordination chemistry), how they behave in water and how they can be separated from one another is crucial for safer nuclear waste management, new reactor technologies and…
NNSA Administrator Williams visits LLNL to discuss stockpile modernization, AI and future deterrence
U.S. Department of Energy (DOE) Under Secretary for Nuclear Security and Administrator of the National Nuclear Security Administration (NNSA) Brandon Williams visited Lawrence Livermore National Laboratory (LLNL) Feb. 9 for briefings and tours focused on stockpile modernization, AI, supercomputing and the future of deterrence. During the visit, Williams met with LLNL…
LLNL researchers discover new way to ‘cage’ plutonium
Plutonium (Pu) exhibits one of the most diverse and complex chemistries of any element in the periodic table. Since its discovery in 1940, scientists have synthesized and studied many different types of plutonium-containing compounds using tools that reveal both their atomic structures and how they interact with light. Not only does plutonium have numerous alloys and…
Fentanyl or phony? Machine-learning algorithm learns to pick out opioid signatures
New forms of fentanyl are created every day. For law enforcement, that poses a challenge: how do you identify a chemical you’ve never seen before? Researchers at Lawrence Livermore National Laboratory (LLNL) aim to answer that question with a machine-learning model that can distinguish opioids from other chemicals with an accuracy over 95% in a laboratory setting. The…
Meet the strangest particle in physics in the latest episode of the Big Ideas Lab podcast
There are particles in our universe so unique and so strange that they can shift form mid-flight. They’re as old as time, coming from the beginning of the universe, stars, nuclear reactions and the earth. And they’re everywhere — even passing through you at this very second: neutrinos. Studying these mysterious particles may unlock answers to some of humanity’s most…
Measuring nuclear reactions found inside stars
Radiochemistry experts at Lawrence Livermore National Laboratory (LLNL) recently made the first experimental measurements of nuclear reactions in high-energy-density plasma environments, which are similar to conditions found in stars, as well as thermonuclear explosions. According to John Despotopulos, an LLNL radiochemist who leads the research team, the ability to…
