Positrons in Surface Physics

@article{Hugenschmidt2016PositronsIS,
  title={Positrons in Surface Physics},
  author={Christoph Hugenschmidt},
  journal={Surface Science Reports},
  year={2016},
  volume={71},
  pages={547-594}
}
Present and future experiments using bright low-energy positron beams
Bright slow positron beams enable not only experiments with drastically reduced measurement time and improved signal-to-noise ratio but also the realization of novel experimental techniques. In solid
Experimental progress in positronium laser physics
Abstract The field of experimental positronium physics has advanced significantly in the last few decades, with new areas of research driven by the development of techniques for trapping and
Many-body theory of positron binding in polyatomic molecules
Positrons bind to molecules leading to vibrational excitation and spectacularly enhanced annihilation. Whilst positron binding energies have been measured via resonant annihilation spectra for ∼ 90
Microscopy studies on magnetron sputtered thin films with preferred orientation for positron moderation
Doppler-broadening Spectroscopy (DBS) and positron annihilation lifetime spectroscopy (PALS) are two positron annihilation spectroscopy techniques used for identifying near surface vacancies and
Development of a pulsed, variable-energy positron beam for atomic scale defect studies.
Positron annihilation spectroscopy provides a sensitive means of non-destructive characterization of materials, capable of probing single atom vacancies in solids with 10-7 sensitivity. We detail
Total-reflection high-energy positron diffraction (TRHEPD) for structure determination of the topmost and immediate sub-surface atomic layers
Total-reflection high-energy positron diffraction (TRHEPD) has recently been developed to investigate the surface structure (atomic geometry) and surface properties of materials. It is the positron
An experimental investigation of light emission produced in the process of positronium formation in matter.
TLDR
It seems that the Ps formation on the alkane surface is not accompanied by the emission of photons with energy in the detection range of 1.6-3.8 eV, and equations were developed to estimate the expected ratio of light emission events to annihilation events with the presence or absence of a photon during thePs formation.
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References

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Theoretical study of the application of positron-induced Auger-electron spectroscopy.
  • Jensen, Weiss
  • Physics
    Physical review. B, Condensed matter
  • 1990
TLDR
A set of bulk positron calculations shows that most elements are expected to have strong PAES signals, and the applicability of PAES to studies of alloy surfaces and surface segregation is illustrated by calculations for Cu-Au surfaces.
Two-dimensional angular correlation of annihilation radiation study of positron interactions with surfaces of aluminum.
  • Chen, Berkó, West
  • Physics
    Physical review. B, Condensed matter
  • 1989
TLDR
Measurements using the improved two-dimensional angular correlation of annihilation radiation technique on surfaces support three established processes: spontaneous positronium (Ps) formation and emission, positrons bound in a surface state, and surface-state positrons thermally desorbed as Ps atoms.
Experiments on positronium negative ions
Positron trapping at quantum-dot-like particles on metal surfaces
Low-energy positron diffraction from GaAs(110)
Intensities of 16 beams of near normal incidence positrons have been measured at T=120 K and analyzed using a multiple scattering model of the low‐energy positron diffraction (LEPD) process.
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