Posts tagged with "Lasers"

diffraction

Record experiments probe exoplanetary cores

Apr. 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

Apr. 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

Apr. 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

Apr. 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...

Former LLNL physicist honored by Uppsala University for research with intense X-ray pulses

Jan. 18, 2018 -  
Henry Chapman, who worked at Lawrence Livermore National Laboratory ( LLNL ) from 1996 to 2007, will be presented on Jan. 26 with an honorary doctorate by Sweden's Uppsala University for his work on developing techniques for imaging and crystallography with intense X-ray pulses. In addition to...

Lab physicist wins Lifetime Achievement award

Jan. 4, 2018 -  
Charles Orth, who has served as a physicist with Lawrence Livermore NationaI Laboratory ( LLNL ) for more than 40 years, was presented with the 2017 Albert Nelson Marquis Lifetime Achievement Award by the publication Marquis Who’s Who . Marquis Who’s Who is a directory of short biographies of...
HAPLS

Lawrence Livermore-developed petawatt laser system installed at ELI Beamlines

Dec. 13, 2017 -  
The L3-HAPLS advanced petawatt laser system was installed last week at the ELI Beamlines Research Center in Dolní Břežany, Czech Republic. L3-HAPLS -- the world’s most advanced and highest average power, diode-pumped petawatt laser system -- was designed, developed and constructed in only three...
twinning

Deformation experiments reveal insight into material changes during shock compression

Oct. 26, 2017 -  
For the first time, scientists have reported in-situ diffraction experiments measuring deformation twinning at the lattice level during shock compression. The results were recently published in Nature by a team of researchers from Lawrence Livermore National Laboratory and collaborators from the...

Haefner elected fellow of Optical Society

Oct. 26, 2017 -  
Constantin Haefner, program director for Advanced Photon Technology (APT) at Lawrence Livermore National Laboratory , has been elected a fellow of The Optical Society of America (OSA). Haefner was recognized for "pioneering next-generation, high-average-power petawatt laser systems enabling a new...