Cluster-surface interaction studied by time-resolved two-photon photoemission

Busolt, Ulrike; Cottancin, E.; Röhr, H.; Socaciu, Liana D.; Leisner, Thomas; Wöste, L.

doi:10.1007/s003400050648

Cited by 22 publications

(11 citation statements)

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“…Chemical modification of the target surface has been gaining increased emphasis, with independent methods of surface analysis being used to demonstrate the formation of new bonds at the interface. 23,55 As ion/surface interaction studies have become more common, the choice of projectile ions has been expanded to include larger polyatomic ions, 56 cluster ions, [57][58][59][60] and ionized biomolecules. [61][62][63][64][65] …”

Section: Atomic and Molecular Collisionsmentioning

confidence: 99%

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Grill¹,

Shen²,

Evans³

et al. 2001

Review of Scientific Instruments

202

249

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Articles you may be interested inMeasuring the internal energies of species emitted from hypervelocity nanoprojectile impacts on surfaces using recalibrated benzylpyridinium probe ions High-energy ions and atoms sputtered and reflected from a magnetron source for deposition of magnetic thin films J. Vac. Sci. Technol. A 23, 671 (2005); 10. 1116/1.1943452 Surface induced dissociations of protonated ethanol monomer, dimer and trimer ions: Trimer break-down graph from the collision energy dependence of projectile fragmentation An overview of gaseous ion/surface collisions is presented, with special emphasis on the behavior of polyatomic projectile ions at hyperthermal collision energies ͑1-100 eV͒ and the instrumentation needed for such studies. The inelastic and reactive processes occurring during ion/surface collisions are described in terms of several archetypes, viz., elastic and quasielastic scattering, chemical sputtering leading to release of surface material, inelastic scattering leading to surface-induced dissociation ͑SID͒ of the projectile, ion/surface reactions, and soft landing. Parameters that are important in ion/surface interactions are discussed, including the interaction time, the conversion of translational to internal energy, the translational energies of the scattered ions, the effects of scattering angle, and the influence of the nature of the surface. Different types of tandem mass spectrometers, built specifically to study ion/surface collision phenomena, are discussed and the advantages and disadvantages of the individual designs are compared. The role of SID as a technique in bioanalytical mass spectrometry is illustrated and this inelastic collision experiment is compared and contrasted with gas-phase collision-induced dissociation, the standard method of tandem mass spectrometry. Special emphasis is placed on reactive scattering including the use of ion/surface reactions for surface chemical analysis and for surface chemical modification.

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Section: Atomic and Molecular Collisionsmentioning

confidence: 99%

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Grill¹,

Shen²,

Evans³

et al. 2001

Review of Scientific Instruments

202

249

View full text Add to dashboard Cite

show abstract

“…Conventional photoelectron spectroscopy (PES) and related photoemission techniques have been widely used in the past to characterize the electronic structure of nanoparticles and clusters supported by a substrate 1–4. Despite the undisputed and important contribution of PES, e.g., to a better understanding of cluster–substrate interactions, the significance of these results is generally restricted by the lateral integration over a macroscopic area 5–7.…”

Section: Introductionmentioning

confidence: 99%

Time‐resolved photoelectron nano‐spectroscopy of individual silver particles: Perspectives and limitations

Rohmer

Bauer

Leißner

et al. 2010

Physica Status Solidi (b)

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Simultaneous time-and energy-resolved two-photon photoemission with nanometer resolution is demonstrated for the first time. We monitor the energy dependence of the decay dynamics of electron excitations in individual silver particles, which were deposited from a gas aggregation cluster source onto a silicon substrate. We show furthermore that the near-field enhancement due to plasmon-resonant excitation is an efficient means to address individual nanometer-sized particles using photoemission electron microscopy.

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“…Further improvement in detection efficiency can be achieved by the use of collimating electron optics. For example, parabolic electron mirrors and magnetic bottle ToF set-ups that allow for an efficient collection of emitted photoelectrons over a large solid angle have been successfully used for gas-phase PE experiments (see [38,49]) and also in a restricted number of surface science experiments [50,51]. If required, angular resolution can be conserved through the use of the multi-anode detection mode.…”

Section: Electron Detectionmentioning

confidence: 99%

Femtosecond ultraviolet photoelectron spectroscopy of ultra-fast surface processes

Bauer

2005

J. Phys. D: Appl. Phys.

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Conventional ultraviolet photoelectron spectroscopy (UPS) has been successfully used for decades to study static electronic properties of surfaces and their interaction with adsorbates. The recent progress in the creation of femtosecond and attosecond VUV pulses by means of high-order harmonic generation (HHG) opens the potential to operate UPS in a time-resolved mode, which is capable of monitoring ultra-fast dynamical changes of surface properties. It is now possible to evaluate the temporal evolution of chemical surface reactions on their fundamental time scales. This paper reviews technical aspects of time-resolved UPS and its application to the study of ultra-fast surface processes. Special emphasis is placed on the creation of ultra-short VUV pulses by means of HHG and also on the description of the stroboscopic experimental approach that enables temporal resolutions of the order of femtoseconds. This review will show that time-resolved UPS is indeed capable of probing with femtosecond resolution dynamic surface processes related, for example, to electronic excitations at surfaces or to the chemical state of adsorbates on a femtosecond time scale.

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Cluster-surface interaction studied by time-resolved two-photon photoemission

Cited by 22 publications

References 0 publications

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Collisions of ions with surfaces at chemically relevant energies: Instrumentation and phenomena

Time‐resolved photoelectron nano‐spectroscopy of individual silver particles: Perspectives and limitations

Femtosecond ultraviolet photoelectron spectroscopy of ultra-fast surface processes

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