Listar por autor "Roth, Melanie"
Mostrando ítems 1-3 de 3
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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) [Artículo de periódico]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) [Artículo de periódico]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) [Artículo de periódico]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 ...