Browsing by Author "Roth, Melanie"

Now showing items 1-3 of 3

    • Direct evidence for projectile charge-ctate dependent crater formation due to fast ions 

      Papaleo, Ricardo Meurer; Silva, Marcos Rodrigo; Leal, Rafael Gustavo Torres; Grande, Pedro Luis; Roth, Melanie; Schattat, Beate; Schiwietz, Gregor (2008) [Journal article]
      We report on craters formed by individual 3 MeV/u Au qini⁺ ions of selected incident charge states qini penetrating thin layers of poly(methyl methacrylate). Holes and raised regions are formed around the region of the ...

    • Evidence for an ultrafast breakdown of the BeO band structure due to swift argon and xenon ions 

      Schiwietz, Gregor; Czerski, Konrad; Roth, Melanie; Grande, Pedro Luis; Koteski, V.; Staufenbiel, Friedrich (2010) [Journal article]
      Auger-electron spectra associated with Be atoms in the pure metal lattice and in the stoichiometric oxide have been investigated for different incident charged particles. For fast incident electrons, for Ar⁷⁺ and Ar¹⁵⁺ ...

    • Indications for enhanced Auger-electron absorption in a hot-electron gas 

      Schiwietz, Gregor; Roth, Melanie; Czerski, Konrad; Staufenbiel, Friedrich; Grande, Pedro Luis (2007) [Journal article]
      Solid-state Auger-electron angular distributions are known to be largely independent of the type of excitation, following roughly a cosine law for low ejection energies. In this Letter it is shown that the iontrack dynamics ...