A systematic study of ionization and high harmonic generation in strong laser fields at long wavelengths confirms predictions made 40 years ago, and has important implications for the development of attosecond light sources.
In a sharp turnaround, the Republican candidates has opened a 5-point lead on his Democratic rival and is seen as a stronger manager of the economy, according to a Reuters/Zogby poll.
AFP - Georgia's South Ossetia and Abkhazia regions planned rallies Thursday to ask Russia for recognition as independent states, two weeks after Russian troops occupied both provinces.
