Physicists have traced the double ionization of argon atoms on attosecond time scales. When an intense laser pulse interacts with an atom it generates agitation on the micro scale. The most likely ...

The physicists in Heidelberg and Innsbruck headed by Xueguang Ren studied how secondary electrons form using a simple model system consisting of two weakly bound argon atoms. They fired electrons at ...

The discovery of the noble gases shows how innovative researchers have been when it came to separating and identifying minor amounts of components from mixtures using relatively simple tools. First ...