Catalyst Deactivation Probed by Positron Annihilation Spectroscopy

ACS Catalysis ◽  
2021 ◽  
pp. 14967-14976
Author(s):  
Chase N. Taylor ◽  
Jagoda Urban-Klaehn ◽  
Thuy T. Le ◽  
Radoslaw Zaleski ◽  
Jeffrey D. Rimer ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Catalyst Deactivation ◽  
Positron Annihilation Spectroscopy

scholarly journals Native vacancy defects in Zn1−x(Mn,Co)xGeAs2 studied with positron annihilation spectroscopy

2009 ◽  
Vol 106 (1) ◽  
pp. 013524 ◽  
Author(s):  
L. Kilanski ◽  
A. Zubiaga ◽  
F. Tuomisto ◽  
W. Dobrowolski ◽  
V. Domukhovski ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Vacancy Defects

scholarly journals Positron annihilation spectroscopy on a beam of positrons the LEPTA facility

2016 ◽  
Vol 132 ◽  
pp. 03014
Author(s):  
E.V. Ahmanova ◽  
M.K. Eseev ◽  
A.G. Kobets ◽  
I.N. Meshkov ◽  
O.S. Orlov ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

scholarly journals Direct evidence of impurity decoration of Ga vacancies inGaNfrom positron annihilation spectroscopy

2006 ◽  
Vol 73 (19) ◽  
Author(s):  
S. Hautakangas ◽  
I. Makkonen ◽  
V. Ranki ◽  
M. J. Puska ◽  
K. Saarinen ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Direct Evidence ◽  
Positron Annihilation Spectroscopy

Defect generation and recovery in polycrystalline ZnO during annealing below 300 °C as studied by in situ positron annihilation spectroscopy

2017 ◽  
Vol 52 (12) ◽  
pp. 7615-7623 ◽  
Author(s):  
Homnath Luitel ◽  
D. Sanyal ◽  
N. Gogurla ◽  
A. Sarkar
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Defect Generation

Characterization of ethylcellulose free films by positron annihilation spectroscopy and mechanical testing

2014 ◽  
Vol 115 ◽  
pp. 47-50 ◽  
Author(s):  
Diána Hegyesi ◽  
Károly Süvegh ◽  
András Kelemen ◽  
Klára Pintye-Hódi ◽  
Géza Regdon
Keyword(s):  
Positron Annihilation ◽  
Mechanical Testing ◽  
Positron Annihilation Spectroscopy ◽  
Free Films

Annihilation Lifetime Spectroscopy Using Positrons from Bremsstrahlung Production

2012 ◽  
Vol 331 ◽  
pp. 41-52 ◽  
Author(s):  
Andreas Wagner ◽  
Wolfgang Anwand ◽  
Maik Butterling ◽  
Thomas E. Cowan ◽  
Fine Fiedler ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Linear Accelerator ◽  
Electron Accelerator ◽  
Positron Annihilation Spectroscopy ◽  
Doppler Broadening ◽  
Electron Linear Accelerator ◽  
Positron Annihilation Lifetime ◽  
Electron Bremsstrahlung ◽  
New Type ◽  
Set Up

A new type of a positron annihilation lifetime spectroscopy (PALS) system has been set up at the superconducting electron accelerator ELBE [ at Helmholtz-Zentrum Dresden-Rossendorf. In contrast to existing source-based PALS systems, the approach described here makes use of an intense photon beam from electron bremsstrahlung which converts through pair production into positrons inside the sample under study. The article focusses on the production of intense bremsstrahlung using a superconducting electron linear accelerator, the production of positrons inside the sample under study, the efficient detector setup which allows for annihilation lifetime and Doppler-broadening spectroscopy simultaneously. Selected examples of positron annihilation spectroscopy are presented.

Determination of nanoobject sizes and concentrations in irradiated metals and alloys via positron annihilation spectroscopy

2011 ◽  
Vol 5 (4) ◽  
pp. 636-646 ◽  
Author(s):  
V. I. Grafutin ◽  
E. P. Prokop’ev ◽  
V. Krsjak ◽  
R. Burcl ◽  
P. Häehner ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Metals And Alloys

Study of the photodegradation of epoxy polymers with slow positron annihilation spectroscopy

2004 ◽  
Vol 42 (13) ◽  
pp. 2441-2459 ◽  
Author(s):  
R. Zhang ◽  
X. Gu ◽  
H. Chen ◽  
J. Zhang ◽  
Y. Li ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Slow Positron ◽  
Epoxy Polymers
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