Posts tagged with "Weapons"


Subcritical experiment captures scientific measurements to advance stockpile safety

May 24, 2019 -  
Lawrence Livermore National Laboratory ( LLNL ) successfully executed its first subcritical experiment since 2003 on Feb. 13 at the Nevada National Security Site ( NNSS ) U1a facility. The experiment — dubbed “Ediza” — took place deep below the desert floor and was the culmination of a five-year...

NIF experiments support warhead life extension

Dec. 6, 2018 -  
It was a normal morning for design physicist Madison Martin at Lawrence Livermore National Laboratory ( LLNL ). At 7:45 a.m., she settled into her classified workstation with a cup of tea to check the results of a numerical calculation she ran overnight. If the calculations proved correct, the...

Uncovering secret structure to safer explosives

Oct. 17, 2018 -  
A team of scientists at Lawrence Livermore National Laboratory ( LLNL ) has shown that the structure of microscopic pores in high explosive materials can significantly impact performance and safety. These findings -- published recently as the cover article in the journal Propellants, Explosives,...

Energy Secretary honors Lab scientist’s contributions to stockpile stewardship

Aug. 30, 2018 -  
Secretary of Energy Rick Perry recognized Lawrence Livermore National Laboratory ( LLNL ) chemist Bill McLean with a Secretary’s Achievment Award Wednesday in recognition of “pioneering technical contributions that have led to significant advancements in science-based stockpile stewardship .” The...

Warhead life extension passes key milestone

June 28, 2018 -  
The program to extend the life of the W80 nuclear warhead recently achieved a significant milestone when the National Nuclear Security Administration ( NNSA ) gave passing grades to the plans to refurbish certain components and the proposed approach to developing component cost estimates. Passing...
For article LLNL scientist named ASME fellow

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...
For article Concussion study may ‘change the game’

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

Sept. 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...