Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Roger Silverans"'
Autor:
Kristiaan Temst, A. N. Dobrynin, Wim Bras, Peter Lievens, G. Verschoren, C. Van Haesendonck, S. Q. Zhou, André Vantomme, Bert Pipeleers, Roger Silverans
Publikováno v:
Thin Solid Films. 516:8232-8239
We present a study of the transport properties of films consisting of Co n clusters embedded in a Au matrix for different Co cluster concentrations. The films were prepared by low-energy cluster beam deposition of Co clusters, combined with simultane
Publikováno v:
Faraday Discuss.. 138:147-162
Size dependent stabilities, fragmentation pathways and dissociation energies of a series of gas phase cationic doped gold clusters, Au(n)X+ (3or = nor = 20; X = Y, Er and Nb), and pure Au(n)+ clusters were investigated in photofragmentation experimen
Publikováno v:
International Journal of Mass Spectrometry. 252:145-150
In this paper, we present a mass spectrometric stability investigation of a series of metal doped group IVA (semi-) metal clusters. Binary metal (M) doped semi-metal (S) MS n (S = Si, Ge, Sn, Pb, and M = Cr, Mn, Cu, Zn) clusters are produced using a
Publikováno v:
The European Physical Journal D. 34:23-27
The stability of cationic silver clusters doped with a 3d transition metal atom (Sc, Ti, V, Cr, Mn, Ni, Cu) is investigated by mass spectrometric analysis of fragments resulting from high fluence irradiation of a cluster beam. The mass spectra show e
Publikováno v:
The Journal of Chemical Physics. 119:7115-7123
A systematic study on the structure and stability of zinc doped gold clusters has been performed by density functional theory calculations. All the lowest-energy isomers found have a planar structure and resemble pure gold clusters in shape. Stable i
Autor:
Roger Silverans, Sven Neukermans, Ewald Janssens, Hiromasa Tanaka, Hiroshi Kudo, Keiichi Yokoyama, Peter Lievens
Publikováno v:
The Journal of Chemical Physics. 119:7206-7213
We report the measurement of the photoabsorption spectrum of Li3O using resonance-enhanced two-photon ionization spectroscopy in the energy range between 0.7 and 2.75 eV. Ab initio geometry optimization calculations at the CCSD(T)/6-311+G(d) level of
Autor:
F. Kollmer, Peter Lievens, N. Erdmann, C. Grüning, Alfred Benninghoven, M. Betti, Philipsen, Erno Vandeweert, Roger Silverans
Publikováno v:
Analytical Chemistry. 75:3175-3181
The resonance and nonresonant laser ionization of uranium atoms sputtered from thin metal films and individual micrometer-size uranium oxide particles, respectively, was studied to evaluate a new setup for the analysis of actinide-containing micromet
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 58:1147-1154
We demonstrate how resonance laser ionization spectroscopy can be applied to investigate the electronic processes that lead to the sputtering of neutral atoms in different quantum states upon keV-ion bombardment of metallic surfaces. Key information
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 203:158-163
Modeling of the electronic processes during sputtering of metals is presented in the framework of the resonant electron transfer (RET) model. The population partition and the state-selective velocity distributions of Co atoms sputtered in the ground
Autor:
Armando Navarro-Vázquez, Ewald Janssens, P. v. R. Schleyer, Sven Neukermans, Peter Lievens, Frederik Vanhoutte, Roger Silverans
Publikováno v:
The Journal of Chemical Physics. 118:5862-5871
We report a combined experimental and theoretical study of the structures and ionization potentials of small InNO clusters (N=1–8). The clusters are produced using a laser vaporization cluster source, laser ionized, and mass selectively recorded by