Results 81 to 90 of about 1,414,987 (211)

Positron Annihilation Ratio Spectroscopy (PsARS) Applied to Positronium Formation Studies [PDF]

, 2010
A Positron Annihilation of Radiation Spectrometer (PsARS) was developed and characterized. PsARS spectroscopy as well as digital Positron Annihilation Lifetime Spectroscopy (PALS) was applied to measure positronium formation on gold nanoparticles ...
Slaughter, Robert C.
core   +1 more source

Variable energy positron annihilation spectroscopy of Perovskite oxides

, 2012
The application of variable energy positron annihilation spectroscopy (VE-PAS) methods to the study of perovskite oxide, ABO3, material thin films and near-surface regions is reviewed.
Keeble, David J.
core   +1 more source

A model for positron annihilation in multi-layer systems by solving the diffusion equation using different positron affinities

New Journal of Physics
We present a method for solving the positron diffusion equation in multi-layer systems. Our approach incorporates material-specific implantation profiles, diffusion parameters, and positron affinities.
Lucian Mathes, Michael Göldl, Michael Leitner, Bettina Kohlhaas, Maximilian Suhr, Vassily Vadimovitch Burwitz, Armin Manhard, Christoph Hugenschmidt   +7 more
doaj   +1 more source

Investigation of Surface Oxidation of Cast Austenitic 304 Stainless Steel at High Temperatures

Metals
The microstructure and surface behavior of iron-based 304 stainless steel after temperature exposure was studied by Mössbauer spectroscopy, powder X-ray diffraction, scanning electron microscopy, energy dispersive analysis and positron annihilation.
Tatiana Ivanova, Michal Kořenek, Miroslav Mashlan, Martin Fryšák   +3 more
doaj   +1 more source

Photoluminescence spectroscopy and positron annihilation spectroscopy probe of alloying and annealing effects in nonpolar m-plane ZnMgO thin films

, 2010
Temperature-dependent photoluminescence characteristics of non-polar m-plane ZnO and ZnMgO alloy films grown by metal organic chemical vapor deposition have been studied. The enhancement in emission intensity caused by localized excitons in m-plane ZnMgO
Liu XL, Wei HY, Yang AL, Qin XB, Zhu QS, Liang DC, Jin P, Yang SY, Wang ZG, Yang, AL, Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: alyang@semi.ac.cn, Song HP, xlliu@semi.ac.cn   +11 more
core  

Synthesis, characterization, and sensitivity tests of La0.8Ba0.1Bi0.1FeO3 nanoparticles towards a few parts-per-billion of acetone gas

Heliyon
In the present paper, the La0.8Ba0.1Bi0.1FeO3 powders were synthesized via the auto-combustion method. The optical, the positron annihilation spectroscopy and the gas sensing properties of our sample were investigated simultaneously.
E.M. Benali, L. Saher, A. Benali, M. Bejar, E. Dhahri, Jiangtao Wu, Lin Peng, P.M. Gordo, J. Pina, B.F.O. Costa   +9 more
doaj   +1 more source

Thermal isomerization of azo-benzene in PMMA probed by a pulsed low-energy positron beam

, 2004
Polymers containing the Azo-benzene group have attracted attention due to anticipated uses such as materials for data storage, membranes with controllable permeability and materials with changeable solubility [1,2].
Egger, W, Skeppstedt, V, Algers, John,, Sperr, P, Maurer, Frans,, Lund University.   +5 more
core  

Gamma Induced Positron Annihilation: History, Current, and Future Developments [PDF]

, 2017
Positron annihilation spectroscopy is often performed using radioactive sources for bulk measurements or positron beams for depth resolved measurements. Both have many advantages and great capabilities for a variety of applications. In the recent history,
Selim, F., F. Selim
core   +1 more source

Investigation of Nitrogen and Vacancy Defects in Synthetic Diamond Plates by Positron Annihilation Spectroscopy. [PDF]

Materials (Basel), 2022
Eseev M, Kuziv I, Kostin A, Meshkov I, Sidorin A, Orlov O.   +5 more
europepmc   +1 more source

Studies of stainless steel exposed to sandblasting

Nukleonika, 2015
The influence of sandblasting on surface and subsurface of stainless steel is investigated using variable energy positron beam (VEP), positron annihilation spectroscopy (PAS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Samples
Horodek Paweł, Eseev Marat K., Kobets Andrey G.   +2 more
doaj   +1 more source