X-ray Laser Progress

More than 25 years ago it took a nuclearresearchers to attract and build a level of
explosion under the Nevada desert to power theexpertise in the general area of plasma physics,
world's first x-ray laser. The new x-ray laser atpreviously beyond the reach of an in-house
Queen's will be powered by another optical laser,university-scale research program in the UK, the
which the university said is one of the mostuniversity said.
powerful optical lasers available in any university"X-ray lasers can be used to probe and diagnose
laboratory worldwide. The Engineering and Physicalvery dense plasma conditions of the type, for
Sciences Research Council (EPSRC) awardedexample, anticipated in the core of fuel pellets
£2.1 million several years ago for thecompressed by powerful optical lasers. It is
construction of the Taranis to create extremelytremendously exciting that Queen's laser systems
hot plasmas.are now capable of carrying out world-leading
"Plasmas are the 'fourth state of matter,' alongexperiments involving laser-plasma interactions in
with gases, liquids and solids. In fact, 99 percentextreme conditions," Lewis said.
of the observable universe, including the stars we"The need for an increased effort in plasma
see in the sky, is in the plasma state," saidphysics research and for more trained plasma
professor Ciaran Lewis of Queen's Centre forphysicists is driven by the expanding use of
Plasma Physics.plasmas in a wide range of applications in industry,
Four hundred times more powerful than the entireincluding the effort to determine if laser-produced
UK National Grid when in operation, it is known asnuclear fusion can provide for the world's post-oil
Taranis (terawatt apparatus for relativistic andpower needs," he said. "Highlighting these two new
nonlinear interdisciplinary science). Named after thesystems to our international research colleagues
European Celtic god of thunder and lightning, itwill ensure Queen's Centre for Plasma Physics and
relies on a very powerful infrared laser systemits researchers remain to the fore of global
which has been recently installed within the Centrebreakthroughs in the area of high energy density
for Plasma Physics at Queen's.physics. We are anticipating many new
Both laser systems will enable Queen'sinternational collaborations.