Positron annihilation spectroscopy

Results 31 to 40 of about 1,414,987 (211)

Millisecond flash lamp curing for porosity generation in thin films

Scientific Reports, 2023
Flash lamp annealing (FLA) with millisecond pulse durations is reported as a novel curing method for pore precursor's degradation in thin films. A case study on the curing of dielectric thin films is presented.
Ahmed G. Attallah +7 more
doaj +1 more source

Positron Annihilation Spectroscopy as a Diagnostic Tool for the Study of LiCoO₂ Cathode of Lithium-Ion Batteries

Condensed Matter, 2021
Positron annihilation spectroscopy using lifetime and Doppler broadening allows the characterization of the lithiation state in LiCoO2 thin film used in cathode of lithium-ion batteries.
Gioele Pagot +4 more
doaj +1 more source

Positron Annihilation Spectroscopy in Materials and Technical Details of Measurement Systems [PDF]

فصلنامه علوم و فناوری فضایی, 2013
Being a very powerful method, Positron Annihilation Spectroscopy (PAS) has been widely used for investigation of defects type and concentration in materials in recent years.
A. A. Mehmandoost-Khajeh-Dad, M. Khaghani, M. Jafarzadeh-Khatibani +2 more
doaj

Positron Annihilation Spectroscopy of Active Galactic Nuclei

Journal of Astronomy and Space Sciences, 2019
A regular and random components in the fluxes of quanta and particles from AGN is investigated. We consider the diffuse component and detect radiative feedback after the passage of cosmic rays and quanta through AGN.
Alexander V. Yushchenko, Yeuncheol Jeong +1 more
doaj +1 more source

Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles [PDF]

Materials Research, 2016
The microstructure and defects of CuO nanoparticles under isochronal annealing were investigated by positron annihilation spectroscopy (PAS), X-ray diffraction (XRD) and scanning electron microscope (SEM).
Jianjian Shi +4 more
doaj +2 more sources

A study of vacancy defects related to gray tracks in KTiOPO4 (KTP) using positron annihilation

AIP Advances, 2014
For the first time to our knowledge, positron annihilation spectroscopy (PAS) was used to study vacancy defects in KTiOPO4 (KTP) single crystals. Positron annihilation lifetime spectroscopy combined with dielectric measurements identified the existence ...
Yang Zhang +5 more
doaj +1 more source

Detection of phase separation of neutron-irradiated Fe–Cr binary alloys using positron annihilation spectroscopy

Nuclear Materials and Energy, 2018
Phase separation in Fe–Cr binary alloys irradiated with neutrons at 473 K and 573 K was investigated using positron annihilation spectroscopy. Using positron annihilation coincidence Doppler broadening (CDB) measurements, the phase separation progress ...
Y. Noshita +6 more
doaj +1 more source

Vacancy creation in electron irradiated Ni₃Al

, 2004
We study the defect creation in electron irradiated Ni3Al. The complete irradiation experiment was simulated using Monte Carlo and molecular dynamics techniques.
Segers, D. (author) +3 more
core +1 more source

Positron annihilation technique in hydrogen storage materials [PDF]

, 2021
The feasibility of using the positron annihilation methods is discussed. Two main methods of electron positron annihilation - positron annihilation lifetime spectroscopy and coincidence Doppler broadening are used to characterize the materials - hydrogen
Medic, Zarko
core

Ultrathin Amphipathic Dual‐Polymer Networks: Unlocking Hyper‐Permeable CO2 Capture via Solvent‐Mediated Poly(Ethylene Oxide) Amorphization

Advanced Functional Materials, EarlyView.
Hydrophilic PEO‐copolymers and hydrophobic PDMS are physically integrated via a compatibilizing solvent into an amphipathic dual‐polymer network with versatile interfacial affinity and completely amorphized PEO segments for hyper‐permeable CO2 transport.
Ji Wu +9 more
wiley +1 more source

positron annihilation
physics
defects

ion implantation
positron lifetime
positron annihilation lifetime spectroscopy