Latest SLAC National Accelerator Laboratory Stories

X-ray Imaging To Observe Running Batteries In Action
2012-07-18 09:56:44

Most electric cars, from the Tesla Model S to the Nissan Leaf, run on rechargeable lithium-ion batteries — a pricey technology that accounts for more than half of the vehicle's total cost. One promising alternative is the lithium-sulfur battery, which can theoretically store five times more energy at a much lower cost. But lithium-sulfur technology has a major drawback: After a few dozen cycles of charging and discharging, the battery stops working. "The cycle life of...

Soot Particles Measured In Flight
2012-06-27 12:53:57

"For the first time we can actually see the structure of individual aerosol particles floating in air, their 'native habitat'," said DESY scientist Henry Chapman from the Center for Free-Electron Laser Science (CFEL) in Hamburg. "This will have important implications for various fields from climate modelling to human health." CFEL is a joint venture of Deutsches Elektronen-Synchrotron DESY, the German Max Planck Society and the University of Hamburg. Aerosol particles like soot play...

Aerosol Structures Exposed By X-ray vision
2012-06-27 12:48:29

Laser probes microscopic components of air pollution Researchers at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have captured the most detailed images to date of airborne soot particles, a key contributor to global warming and a health hazard. The discovery reveals the particles' surprisingly complex nanostructures and could ultimately aid the understanding of atmospheric processes important to climate change, as well as the design of cleaner combustion...

2012-05-16 22:36:58

For the first time, scientists have seen an X-ray-irradiated mineral go to two different states of matter in about 40 femtoseconds (a femtosecond is one quadrillionth of a second). Using the Linac Coherent Light Source (LCLS) X-ray Free-Electron Laser (XFEL) at SLAC National Accelerator Laboratory at Stanford, Stefan Hau-Riege of Lawrence Livermore National Laboratory and colleagues heated graphite to induce a transition from solid to liquid and to warm-dense plasma. Ultrafast phase...

3.4 Billion Pixel Telescope Plans Move One Step Further
2012-04-26 13:11:13

Lee Rannals for RedOrbit.com The U.S. Department of Energy has given the go ahead for a proposed 3.4 billion pixel Large Synoptic Survey Telescope (LSST) to move on to the next step of development. Now that the project has received approval from the department, it will begin the engineering design, scheduling, and budgeting portion of the project. The telescope received a "Critical Decision 1" approval, making a big step toward being one of the widest, fastest and deepest view...

2012-03-14 20:39:01

Researchers from Stanford University and the U.S. Department of Energy's SLAC National Accelerator Laboratory have created the first-ever system of "designer electrons" — exotic variants of ordinary electrons with tunable properties that may ultimately lead to new types of materials and devices. "The behavior of electrons in materials is at the heart of essentially all of today's technologies," said Hari Manoharan, associate professor of physics at Stanford and a member of SLAC's...

2012-03-05 13:11:22

Discovery paves the way for new synthesis of antibiotics Researchers working at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have used powerful X-rays to help decipher how certain natural antibiotics defy a longstanding set of chemical rules — a mechanism that has baffled organic chemists for decades. Their result, reported today in Nature, details how five carbon atoms and one oxygen atom in the structure of lasalocid, a natural antibiotic produced...

Galaxy Could Be Teeming With 'Nomad Planets'
2012-02-24 09:17:30

Researchers at the Kavli Institute for Particle Astrophysics and Cosmology (KIPAC) suggest in a new study that the heavens could be teeming with “nomad planets,” wandering through space instead of orbiting around host stars. In fact, say the researchers, there could be 100,000 times more of these planets in the Milky Way alone than there are stars. And if observations confirm this estimate, it could affect the current theories of planet formation and change our understanding of...

2012-01-26 13:18:34

Lab scientists and international collaborators have created the shortest, purest X-ray laser pulses ever achieved, fulfilling a 45-year-old prediction and ultimately opening the door to new medicines, devices and materials. The researchers, reporting today (Jan. 26) in Nature, aimed radiation from the Linac Coherent Light Source (LCLS), located at the Stanford Linear Accelerator Center (SLAC), at a cell containing neon gas, setting off an avalanche of X-ray emissions to create a new...

Word of the Day
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.