Speciation of uranium and doping induced defects in Gd1.98U0.02Zr2O7: Photoluminescence, X-ray photoelectron and positron annihilation lifetime spectroscopy

2017 ◽  
Vol 669 ◽  
pp. 245-250 ◽  
Author(s):  
Santosh K. Gupta ◽  
C. Reghukumar ◽  
Nimai Pathak ◽  
K. Sudarshan ◽  
D. Tyagi ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
X Ray ◽  
Positron Annihilation Lifetime ◽  
Induced Defects

scholarly journals Convenient Preparation of Graphene Oxide from Expandable Graphite and Its Characterization by Positron Annihilation Lifetime Spectroscopy

2019 ◽  
Vol 5 (1) ◽  
pp. 6 ◽  
Author(s):  
Guido Panzarasa ◽  
Giovanni Consolati ◽  
Marco Scavini ◽  
Mariangela Longhi ◽  
Fiorenza Quasso
Keyword(s):  
Graphene Oxide ◽  
Positron Annihilation ◽  
Nitrogen Adsorption ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Expandable Graphite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Positron Annihilation Lifetime ◽  
Convenient Preparation ◽  
Extract Information

Graphene oxide (GO) is conveniently prepared from expandable graphite using a simplified Hummers’ method. The product is thoroughly characterized by usual techniques (UV-vis, Fourier-transform infrared (FTIR) and Raman spectroscopies, zeta potential, electron microscopy, X-ray diffraction, nitrogen adsorption) to confirm the success of synthesis. Positron annihilation lifetime spectroscopy (PALS) is then used to extract information on the microenvironment in between the layers of graphene oxide.

Positron annihilation lifetime spectroscopy (PALS) and small angle x-ray scattering (SAXS) of self-assembled amphiphiles

2007 ◽  
Author(s):  
Aurelia W. Dong ◽  
Carlos Pascual-Izarra ◽  
Yao-Da Dong ◽  
Steven J. Pas ◽  
Anita J. Hill ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Small Angle ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
X Ray ◽  
Positron Annihilation Lifetime ◽  
X Ray Scattering ◽  
Self Assembled ◽  
Ray Scattering

A Preliminary Study of Oxidation Behavior of Mo-50Re Alloy at Different Temperature Using Positron Annihilation Lifetime Spectroscopy

2017 ◽  
Vol 373 ◽  
pp. 134-137
Author(s):  
Zhe Jie Zhu ◽  
Wei Yang ◽  
Jian Jian Shi ◽  
Tong Guang Zhai ◽  
Yi Chu Wu
Keyword(s):  
Oxide Film ◽  
Positron Annihilation ◽  
Interface Layer ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Positron Annihilation Lifetime ◽  
Interfacial Defects ◽  
Preliminary Study ◽  
Orthogonal Phase

The oxidized Mo-50Re alloys in air at 573 K and 873 K for various times were investigated by X-Ray diffraction and positron annihilation lifetime spectroscopy. The results indicated that main orthogonal phase MoO3 together with small amount of monoclinic phase Mo8O23 were formed on on the surface of the specimens, and the oxide film of specimens oxidized at 873 K were much thicker than that of specimens oxidized at 573 K. Meanwhile, when Mo-50Re specimens oxidized in air at 873K, the defect’s size within interface layer of the specimens was larger, and the oxide film on the surface of the specimens contained much more defects. Faster oxidation process were observed occured at 873K, which was likely due to the formation of larger-size interfacial defects.

scholarly journals Influence of Heat Treatment on Defect Structures in Single-Crystalline Blade Roots Studied by X-ray Topography and Positron Annihilation Lifetime Spectroscopy

2018 ◽  
Vol 49 (9) ◽  
pp. 4353-4361 ◽  
Author(s):  
Jacek Krawczyk ◽  
Włodzimierz Bogdanowicz ◽  
Aneta Hanc-Kuczkowska ◽  
Anna Tondos ◽  
Jan Sieniawski
Keyword(s):  
Heat Treatment ◽  
Positron Annihilation ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Defect Structures ◽  
Single Crystalline ◽  
X Ray ◽  
Positron Annihilation Lifetime
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