LLNL and KCNSC team up to accelerate design-to-deployment with new polymer production enclave

July 27, 2021- 
A polymer production enclave, in partnership with the Kansas City National Security Campus (KCNSC) and Lawrence Livermore National Laboratory (LLNL), is on budget and on schedule to bring modern technology into the Nuclear Security Enterprise. The enclave will enable rapid development of design and production processes of polymer parts for modernization programs. This enclave is part...

Nuclear forensics international group holds 25th anniversary meeting

July 22, 2021- 
Several Lawrence Livermore National Laboratory (LLNL) scientists played key roles in the 25th annual meeting of the Nuclear Forensics International Technical Working Group (ITWG), which met last month. The event, which was conducted in a virtual setting for the first time, was attended by more than 100 experts from 30 countries and highlighted the group’s notable contributions to...

LLNL and collaborators improve electrochemical reactor performance through 3D printing

July 20, 2021- 
Lawrence Livermore National Laboratory (LLNL) scientists and their collaborators are leveraging the power of 3D printing to improve the performance of electrochemical reactors used to convert carbon dioxide (CO2) to useful energy sources, chemicals and material feedstocks. Working under a cooperative research and development agreement (CRADA) with Stanford University and oil and gas...

3D hohlraum model assists in indirect-drive implosions at NIF

July 19, 2021- 
Scientists from Lawrence Livermore National Laboratory (LLNL) and the Laboratory for Laser Energetics (LLE) have described a simple 3D model in hohlraums and capsules for inertial confinement fusion (ICF) implosions. The model will assist in delivering the required implosion symmetry on layered deuterium-tritium (DT) implosions for ignition.  The results of the work remove much of the...

It’s no drag: New heavy vehicle design increases fuel efficiency, cuts carbon emissions

July 1, 2021- 
Reshaping the exterior of heavy vehicles, such as semitrucks, so that they are aerodynamically integrated along their entire length in a smooth, continuous fashion could reduce drag, increase fuel efficiency and cut carbon emissions. Using wind tunnel measurements and computational fluid dynamics simulations, Lawrence Livermore National Laboratory (LLNL) engineers have demonstrated...

LLNL’s Bill Pitz earns Department of Energy lifetime distinguished achievement award

June 29, 2021- 
Lawrence Livermore National Laboratory (LLNL) engineer Bill Pitz has earned a lifetime distinguished achievement award from the Department of Energy’s Vehicle Technologies Office (DOE VTO) for his significant contributions to the field of chemical kinetics. Pitz, along with retiree Charles Westbrook, produced a chemical kinetic study of fuel additives for engine knock in spark ignition...

Scientists focus on cone targets to enhance temperature of electron beams

June 24, 2021- 
Intense short-pulse laser-driven production of bright high-energy sources, such as X-rays, neutrons and protons, has been shown to be an invaluable tool in the study of high energy density science. In an effort to address some of the most challenging applications, such as X-ray radiography of high areal density objects for industrial and national security applications, both the yield...

Scientists create a novel instrument to probe thermal states of extreme matter on Earth

June 23, 2021- 
Scientists at Lawrence Livermore National Laboratory (LLNL) have collaborated with Princeton Plasma Physics Laboratory (PPPL) to design a novel X-ray crystal spectrometer to provide high-resolution measurements of a challenging feature of high energy density (HED) matter produced by National Ignition Facility (NIF) experiments. The work is featured in a paper in the Review of Scientific...

New research identifies injury-induced molecular changes in chondrocytes, at single-cell level

June 21, 2021- 
Articular cartilage is a connective tissue lining the surfaces of joints. When the cartilage severely wears down, it leads to osteoarthritis (OA), a debilitating disease that affects millions of people globally. The articular cartilage is composed of a dense extracellular matrix (ECM) with a sparse distribution of cells found in healthy cartilage, also known as chondrocytes, with varying...

Lawrence Livermore team designs semiconductor switch for next-generation communications

June 18, 2021- 
Lawrence Livermore National Laboratory (LLNL) engineers have designed a new kind of laser-driven semiconductor switch that can theoretically achieve higher speeds at higher voltages than existing photoconductive devices. The development of such a device could enable next-generation satellite communication systems capable of transferring more data at a faster rate, and over longer distances...

LLNL/Tyvak space telescope goes into orbit

June 17, 2021- 
Thousands of images of Earth and space have been taken by a compact space imaging payload developed by Lawrence Livermore National Laboratory (LLNL) researchers and its collaborator Tyvak Nano-Satellite Systems. Known as GEOStare2, the payload has two space telescopes that together have taken more than 4,500 pictures for space domain awareness, astronomy and Earth observations that have...

Research highlights techniques for studying materials under extreme conditions

June 16, 2021- 
The properties of materials under extreme conditions are of key interest to a number of fields, including planetary geophysics, materials science and inertial confinement fusion (ICF). In geophysics, the equation of state of planetary materials such as hydrogen and iron under ultrahigh pressure and density will provide a better understanding of their formation and interior structure. I...

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)...

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...

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...