News

Army reservists a vital part of Lab’s workforce

June 14, 2021- 
Lawrence Livermore National Laboratory (LLNL) joins in the celebration of the U.S. Army birthday on June 14. Created in 1775, the army originally consisted of volunteer soldiers with roots to the Continental Army — and was formed to fight the Revolutionary War. Today, as the largest branch of the country’s military, the proud men and women of the U.S. Army continue to provide peace and...

Machine learning aids in materials design

June 10, 2021- 
A long-held goal by chemists across many industries, including energy, pharmaceuticals, energetics, food additives and organic semiconductors, is to imagine the chemical structure of a new molecule and be able to predict how it will function for a desired application. In practice, this vision is difficult, often requiring extensive laboratory work to synthesize, isolate, purify and...

From NIF to Z: LLNL continues to collaborate with Sandia on technology transfer projects

June 8, 2021- 
Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories continue to collaborate on diagnostic advancements on the nation’s premier high-energy density (HED) facilities. Mark Bowers, magnetic direct drive diagnostics manager at the National Ignition Facility (NIF), said current projects include providing NIF’s X-ray streak camera, neutron Time-of-Flight (nToF)...

Lawrence Livermore team looks at nuclear weapon effects for near-surface detonations

June 7, 2021- 
A Lawrence Livermore National Laboratory (LLNL) team has taken a closer look at how nuclear weapon blasts close to the Earth’s surface create complications in their effects and apparent yields. Attempts to correlate data from events with low heights of burst revealed a need to improve the theoretical treatment of strong blast waves rebounding from hard surfaces. This led to an extension...

DOE honors two early career Lab scientists

June 4, 2021- 
Two scientists from Lawrence Livermore National Laboratory (LLNL) are recipients of the 2021 Department of Energy’s (DOE) Office of Science Early Career Research Program award. Andrea Schmidt and Xue Zheng are among 83 scientists nationwide selected for the recognition. Under the program, typical awards for DOE national laboratory staff are $500,000 per year for five years. The Early...

Smashing gold with finesse: Shockless compression experiments establish new pressure scales

June 3, 2021- 
To test the Standard Model of particle physics, scientists often collide particles using gigantic underground rings. In a similar fashion, high-pressure physicists compress materials to ever greater pressures to further test the quantum theory of condensed matter and challenge predictions made using the most powerful computers. Pressures exceeding 1 million atmospheres are capable of...

Decontaminating N95 masks for reuse

June 2, 2021- 
Scientists at Lawrence Livermore National Laboratory (LLNL) have determined that heating N95 respirators up to 75 degrees Celsius for 30 minutes deactivates a surrogate coronavirus without compromising the device’s fit and its ability to filter airborne particles. This temperature (equivalent to 167 degrees Fahrenheit) is easily achieved in hospitals and field settings allowing for the...

Research describes slow and fast light in plasma

June 1, 2021- 
Slow and fast light, or large changes in the group velocity of light, have been observed in a range of optical media, but the fine control over the refractive index necessary to induce an observable effect has not been achieved in a plasma. In a paper published in Physical Review Letters, scientists from Lawrence Livermore National Laboratory (LLNL) and the Laboratory for Laser...

LLNL-patented power grid technology could reduce global CO2 emissions by 10 percent or more

June 1, 2021- 
To address inefficiencies in transmitting electricity over smart grids, engineers at Lawrence Livermore National Laboratory (LLNL) and their collaborators have developed a light-activated switch that, if fully deployed, could reduce carbon emissions by more than 10 percent. Capable of sending high-voltage, direct-current power along grid lines and switching high voltages up to 10 times...

Scientists use simulations to examine the performance of materials in NIF experiments

May 27, 2021- 
Scientists have examined the performance of pure boron, boron carbide, high-density carbon and boron nitride ablators — the material that surrounds a fusion fuel and couples with the laser or hohlraum radiation in an experiment — in the polar direct drive exploding pusher (PDXP) platform, which is used at the National Ignition Facility (NIF). The platform uses the polar direct drive...

Experiments validate the possibility of helium rain inside Jupiter and Saturn

May 26, 2021- 
Nearly 40 years ago, scientists first predicted the existence of helium rain inside planets composed primarily of hydrogen and helium, such as Jupiter and Saturn. However, achieving the experimental conditions necessary to validate this hypothesis hasn’t been possible — until now. In a paper published today by Nature, scientists reveal experimental evidence to support this long...

Laser-driven ion acceleration with deep learning

May 25, 2021- 
While advances in machine learning over the past decade have made significant impacts in applications such as image classification, natural language processing and pattern recognition, scientific endeavors have only just begun to leverage this technology. This is most notable in processing large quantities of data from experiments.  Research conducted at Lawrence Livermore National...

Satellites may have underestimated warming in the lower atmosphere

May 24, 2021- 
New research by Lawrence Livermore National Laboratory (LLNL) climate scientists and collaborators shows that satellite measurements of the temperature of the troposphere (the lowest region of the atmosphere) may have underestimated global warming over the last 40 years. The research appears in the Journal of Climate. The team studied four different properties of tropical climate change...

Lab postdocs invited to prestigious Heidelberg Forum

May 21, 2021- 
Two Lawrence Livermore National Laboratory (LLNL) postdoctoral researchers are among a select group of 200 scientists invited to attend the 8thHeidelberg Laureate Forum, an international conference that connects young researchers with laureates of the major prizes in mathematics and computer science. For a week in September, LLNL computational engineering postdocs Ruben Glatt and Felipe...

Showcasing the Lab’s military and veterans service

May 21, 2021- 
The Veterans/Military Outreach and Recruiting Program at Lawrence Livermore National Laboratory (LLNL) is committed to supporting and recruiting military students, reserve and active duty, transitioning service men and women and veterans. The program’s initial focus on recruiting and hiring has aided directly in the employment of 463 veterans, with many more serving on internships ranging...

LLNL featured as a top STEM workplace by AISES

May 20, 2021- 
Lawrence Livermore National Laboratory (LLNL) was honored by the American Indian Science and Engineering Society (AISES) Winds of Change magazine as one of the Top 50 STEM Workplaces in 2021, as an organization setting the standard for indigenous STEM professionals. LLNL shares this honor alongside other top companies striving to create a welcoming and inclusive workplace...

The data-driven future of extreme physics

May 19, 2021- 
By applying modern machine learning and data science methods to “extreme” plasma physics, researchers can gain insight into our universe and find clues about creating a limitless amount of energy. In a recent perspective published in Nature, Lawrence Livermore National Laboratory (LLNL) scientists and international collaborators outline key challenges and future directions in using machine...

Application process opens for Lawrence Livermore National Security annual Community Gift Program

May 19, 2021- 
Lawrence Livermore National Security, LLC (LLNS) is accepting applications for its annual Community Gift Program for 2021. Established in 2008, the LLNS Community Gift Program provides annual awards to support nonprofit organizations addressing STEAM (science, technology, engineering, arts and mathematics) education, community service and philanthropic needs of local and surrounding...

Underneath it all: dishing the dirt on protists

May 18, 2021- 
Plants evolved in a world dominated by prokaryotic and eukaryotic microbes. Underneath the surface, plant roots interact with microbes in the soil, also called the rhizosphere microbiome. Although bacteria and fungi are well-studied in the rhizosphere (the layer closest to the roots), other components, including viruses and protists, are less well known. A protist is any eukaryotic...

Scientists identify key trends in high-energy-density mixing layers

May 17, 2021- 
Imagine a bottle of salad dressing containing oil and vinegar. The oil has a lower density than vinegar, so it floats on the vinegar. The oil will not stay trapped under the vinegar if the bottle is flipped upside down. It will bubble up through the vinegar until a stable state is restored. This simple physical process is known as RayleighTaylor instability, and it can be found in...