Posts tagged with "Weapons"

LLNL scientist named ASME fellow

May. 16, 2018 -  
Fady Najjar, a design physicist at Lawrence Livermore National Laboratory ( LLNL ), has been elected a fellow of the American Society of Mechanical Engineers ( ASME ). Najjar was recognized for “significant contributions and innovations in computational techniques for fluid flows, for advances in...
What Causes Concussions?

Concussion study may ‘change the game’

Jan. 19, 2018 -  
Researchers have identified evidence of early chronic traumatic encephalopathy (CTE) brain pathology after head impact -- even in the absence of signs of concussion. Early indicators of CTE pathology not only persisted long after injury but also spread through the brain, providing the best evidence...
film preservation

LLNL releases newly declassified test videos

Dec. 14, 2017 -  
Researchers at Lawrence Livermore National Laboratory ( LLNL ) released 62 newly declassified videos today of atmospheric nuclear tests films that have never before been seen by the public. The videos are the second batch of scientific test films to be published on the LLNL YouTube channel this...

Lawrence Livermore to honor the architect of science-based stockpile stewardship

Oct. 25, 2017 -  
Victor Reis faced an audacious challenge when he accepted the appointment as assistant secretary of Defense Programs in the Department of Energy in 1993. One year prior, President George H.W. Bush agreed to end nuclear testing. Gone were the days of Lawrence Livermore and Los Alamos national...

25 years after the last U.S. nuclear test

Sep. 18, 2017 -  
A blend of beautiful blue and green hues jump off the computer screen of L awrence Livermore National Laboratory physicist Todd Hoover. The visualization is a simulation of an underground nuclear test that took place 25 years ago this day. Hoover was a test coordinator on the experiment, code-named...

Plutonium research to advance stockpile safely

Aug. 29, 2017 -  
Conducting an experiment that combines high explosives with plutonium -- a special nuclear material used in nuclear weapons -- is no trivial matter. Not only do researchers need to ensure the plutonium remains “subcritical” to avoid a nuclear explosion, they must be absolutely certain that these...

LLNL supports ICBM flight tests

Jun. 5, 2017 -  
As an unarmed Minuteman III intercontinental ballistic missile (ICBM) rocketed into the night sky, a team of Lawrence Livermore National Laboratory (LLNL) researchers listened intently to radio chatter and watched flight data stream in from a control room at the Ronald Reagan Ballistic Missile...
Weapon physicist declassifies rescued nuclear test films

Physicist declassifies rescued nuclear test films

Mar. 14, 2017 -  
The U.S. conducted 210 atmospheric nuclear tests between 1945 and 1962, with multiple cameras capturing each event at around 2,400 frames per second. But in the decades since, around 10,000 of these films sat idle, scattered across the country in high-security vaults. Not only were they gathering...

It’s a blast: Imaging high explosive detonators

Mar. 7, 2017 -  
Lawrence Livermore National Laboratory (LLNL) scientists and collaborators at Los Alamos National Laboratory (LANL) for the first time have taken 3D snapshots of operating high explosive detonators. Scientists from LLNL, Los Alamos and National Security Technologies, LLC (NSTech) combined state-of-...

How this Martian moon became the ‘Death Star’

Oct. 12, 2016 -  
Mars’ largest moon, Phobos, has captured public imagination and been shrouded in mystery for decades. But numerical simulations recently conducted at Lawrence Livermore National Laboratory (LLNL) have shed some light on the enigmatic satellite. The dominant feature on the surface of Phobos (22-...