Posts tagged with "Lasers"

ma

Ma selected for DOE early career award

June 21, 2018 -  
Tammy Ma, a plasma physicist at Lawrence Livermore National Laboratory ( LLNL ), has been named a recipient of the prestigious Department of Energy (DOE) Office of Science Early Career Research Program ( ECRP ). The program, now in its ninth year, is designed to bolster the nation’s scientific...
For article Millot’s dynamic journey in HED science

Millot’s dynamic journey in HED science

June 18, 2018 -  
Marius Millot was just a child when scientists at the University of Pennsylvania and Los Alamos National Laboratory predicted the existence of superionic water ice using molecular dynamics simulations. This new phase of water is characterized by the liquid-like diffusion of hydrogen ions within the...
NIF

NIF achieves record double fusion yield

June 13, 2018 -  
An experimental campaign conducted at Lawrence Livermore National Laboratory’s ( LLNL ) National Ignition Facility ( NIF ) has achieved a total fusion neutron yield of 1.9e16 (1.9x10 16 ) and 54 KJ of fusion energy output -- double the previous record . Researchers in LLNL’s Inertial Confinement...
water

A warm look at water’s structure

May 14, 2018 -  
Boiling water traditionally involves adding energy to molecules by conduction, convection or thermal radiation. But Lawrence Livermore National Laboratory ( LLNL ) scientists and collaborators have figured out a way using an X-ray Free Electron Laser (XFEL) to heat water to temperatures above 100,...
NIF

Experiments shed new light on supernovae

May 9, 2018 -  
Experiments on Lawrence Livermore National Laboratory's National Ignition Facility ( NIF ) are providing scientists with new insights into the turbulent after-effects of a supernova explosion. The studies also could inform efforts to achieve self-sustaining nuclear fusion on NIF and other high-...
diffraction

Record experiments probe exoplanetary cores

April 25, 2018 -  
Using high-powered laser beams, iron-silicon alloys have been compressed to unprecedented pressures corresponding to the center of a three-Earth-mass extrasolar planet. The resulting measurements of crystal structure and density provide new insights into the nature of the deep interiors of the...
lasers

Ramp compression of iron provides insight into core conditions of large rocky exoplanets

April 16, 2018 -  
In a paper published today by Nature Astronomy , a team of researchers from Lawrence Livermore National Laboratory ( LLNL ), Princeton University, Johns Hopkins University and the University of Rochester have provided the first experimentally based mass-radius relationship for a hypothetical pure...
arc

A powerful new source of high-energy protons

April 12, 2018 -  
Nearly 20 years ago, researchers conducting experiments on Lawrence Livermore National Laboratory's ( LLNL ) Nova Petawatt laser system -- the world’s first quadrillion-watt laser -- discovered that when the system’s intense short-pulse laser beams struck a thin foil target, an unexpected torrent...
NIF

Tour guides put NIF’s best foot forward

April 10, 2018 -  
In 2017, after more than eight years of operation, the National Ignition Facility ( NIF ) at Lawrence Livermore National Laboratory ( LLNL ) reached its epic 2,000 th shot. Over that time, as the shot rate steadily climbed, other important numbers also have risen dramatically. By the end of 2017,...
superionic water

First experimental evidence for superionic ice

Feb. 5, 2018 -  
Among the many discoveries on matter at high pressure that garnered him the Nobel Prize in 1946, scientist Percy Bridgman discovered five different crystalline forms of water ice, ushering in more than 100 years of research into how ice behaves under extreme conditions. One of the most intriguing...