Laser-plasma Accelerators Ride On Einstein's Shoulders Nov 12, 2009
5, 2009) A time-varying bubble of electron density in the wake of an ultra-intense laser pulse traps the ambient plasma electrons and accelerates them to high energy producing collimated monoenergetic beams. (Oct. (Science Daily)
Computer predicts reactions between molecules and surfaces, with chemical precision Nov 7, 2009
However, the theory does not explain how exactly the energy is determined from the electron density ... The functional gives the energy as a function of the electron density. (EurekAlert!)
Electron Self-injection Into An Evolving Plasma Bubble Nov 6, 2009
The basic premise of this work is that the size of the bubble -- the cavity of electron density traveling over the positive ion background with nearly the speed of light -- is determined by the spot size of the driving laser pulse. Plasma nonlinearities cause the laser to focus and defocus in the course of propagation. (Science Daily)
Going Plasmonic In Search Of Faster Computing, Communications Oct 27, 2009
Plasmonic data transmission functions on the basis of oscillations in the electron density at the boundary of two materials: a dielectic (non-conductive) plasma or polymer and a metal surface. By exciting the electrons with light it is possible to propagate high-frequency waves of plasmons along a metal wire or waveguide, thus transmitting a data signal. (Science Daily)
Genetic switch potential key to new class of antibiotics Apr 18, 2009
Synchrotrons are particle accelerator facilities that direct high energy X-rays at crystals to produce detailed electron density maps from which extremely accurate 3-D pictures can be constructed. The new snapshots revealed fascinating insights about the riboswitch structure and preQ0 interactions, the researchers said. (EurekAlert!)
Spintronics Advance Reveals New Conservation Law In Fundamental Physics Apr 3, 2009
Further adjustments to the experimental parameters for example tuning not only the electric field and the width of the quantum well but electron density as well should improve the lifetime of the helix still further. Authors include J. D. Koralek, C. P. Weber, J. Orenstein, B. A. Bernevig, Shoucheng Zhang, S. Mack, and D. D. Aschwalom. (Science Daily)
Five rockets ready to launch at Poker Flat Research Range Feb 14, 2009
Two rockets will also carry instruments that will measure electron density, neutral temperature, and turbulence. Kristina Lynch of Dartmouth College is the principal investigator for the other mission named Cascades II. In the Cascades experiment, a 58-foot, four-stage Black Brant II sounding rocket will blast off from Poker Flat into an active aurora display when the weather is clear above Chatanika and at camera sites in Toolik Lake and Kaktovik, on Alaska's north slope. (EurekAlert! -- Business News)
