Results 41 to 50 of about 494,691 (265)

Positron lifetime calculation for the elements of the periodic table

Journal of Physics: Condensed Matter, 2007
Theoretical positron lifetime values have been calculated systematically for most of the elements of the Periodic Table. Self-consistent and non-self-consistent schemes have been used for the calculation of the electronic structure in the solid, as well as different parameterizations for the positron enhancement factor and correlation energy.
Campillo-Robles, Jose Miguel, Ogando Arregui, Eduardo, Plazaola Muguruza, Fernando   +2 more
openaire   +4 more sources

Strong Coupling in Bulk Nanoplasmonic Nanoplatelet Perovskite Scintillators

Advanced Materials, EarlyView.
A bulk scintillating nanocomposite is engineered from CsPbBr3 nanoplatelets and Ag nanocubes to support exciton–plasmon strong coupling under X‐ray excitation. The resulting hybrid polaritonic states appear directly in radioluminescence, opening a route toward polariton‐enabled scintillator design beyond conventional Purcell enhancement.
Michal Makowski, Dominik Kowal, Anna Pniakowska, Kamil Misztal, Mohanad Saadeldin Eid, Joanna Cybinska, Winicjusz Drozdowski, Benoit Mahler, Christophe Dujardin, Detlef Hommel, Liang Jie Wong, Dennis Schaart, Sergio Brovelli, Muhammad Danang Birowosuto   +13 more
wiley   +1 more source

Ortho-positronium lifetime for soft-tissue classification

Scientific Reports
The objective of this work is to showcase the ortho-positronium lifetime as a probe for soft-tissue characterization. We employed positron annihilation lifetime spectroscopy to experimentally measure the three components of the positron annihilation ...
Ashish V. Avachat, Kholod H. Mahmoud, Anthony G. Leja, Jiajie J. Xu, Mark A. Anastasio, Mayandi Sivaguru, Angela Di Fulvio   +6 more
doaj   +1 more source

Data on pure tin by Positron Annihilation Lifetime Spectroscopy (PALS) acquired with a semi-analog/digital setup using DDRS4PALS

Data in Brief, 2019
Positron annihilation lifetime spectroscopy (PALS) provides a powerful technique for non-destructive microstructure investigations in a broad field of material classes such as metals, semiconductors, polymers or porous glasses. Even though this method is
Danny Petschke, Ricardo Helm, Torsten E.M. Staab   +2 more
doaj   +1 more source

Kinematically complete experiments for positron-impact ionization of helium atoms at the NEPOMUC facility [PDF]

, 2011
12th International Workshop on Slow Positron Beam Techniques (SLOPOS12), 1–6 August 2010, Magnetic Island, North Queensland, AustraliaPositron impact ionization of helium is studied with fully resolved momentum vectors of all continuum particles.
Senftleben, A., J C Lower, Buckman, S., Senftleben, A, J Ullrich, Holzwarth, M, Hargreaves, Leigh Randall, Hargreaves, L.R., M Holzwarth, Ullrich, Joachim, Lower, J., X Ren, S J Buckman, Lohmann, Birgit, J P Sullivan, Slaughter, D., B Lohmann, T Pflüger, Slaughter, Daniel, Dorn, A., Ren, X, Lohmann, B., A Dorn, Sullivan, J., Sullivan, James, Dorn, Alexander R, Buckman, Stephen J., Pflüger, T, Sullivan, J. P., D S Slaughter, Ullrich, J., A Senftleben, Hargreaves, L., Holzwarth, M., Ren, X. N., Lower, Julian, Pfluger, T., Buckman, Stephen, Slaughter, D. S., Ren, X., L R Hargreaves   +40 more
core   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Study on the concentration and size of vacancy defect in W-K alloy

四川大学学报. 自然科学版, 2019
W-K alloy has many advantages, such as high melting point, the resistance to thermal shock, and excellent resistance to helium hydrogen plasma irradiation.
ZHANG Yuan-Yuan, LIU Nan-Shun, ZHANG Pei-Yuan, DENG Ai-Hong   +3 more
doaj  

Toward a European Network of Positron Laboratories

Nukleonika, 2015
Some applications of controlled-energy positron beams in material studies are discussed. In porous organic polysilicates, measurements of 3γ annihilation by Doppler broadening (DB) method at the Trento University allowed to trace pore closing and filling
Karwasz Grzegorz P., Brusa Roberto S., Egger Werner, Ogorodnikova Olga V.   +3 more
doaj   +1 more source

Microstructure and luminescent properties of Eu3+-activated MgGa2O4:Mn2+ ceramic phosphors

Journal of Advanced Ceramics, 2020
Mn2+ and the trivalent europium (Eu3+)-doped MgGa2O4 ceramics are characterized using a multi-experimental approach. The formation of spinel-structured ceramics is ascertained from X-ray diffraction (XRD) analysis.
A. Luchechko, Y. Shpotyuk, O. Kravets, O. Zaremba, K. Szmuc, J. Cebulski, A. Ingram, R. Golovchak, O. Shpotyuk   +8 more
doaj   +1 more source

Structural Defects in TiNi-Based Alloys after Warm ECAP

Metals, 2020
The microstructure, martensitic transformations and crystal structure defects in the Ti50Ni47.3Fe2.7 (at%) alloy after equal-channel angular pressing (ECAP, angle 90°, route BC, 1–3 passes at T = 723 K) have been investigated.
Aleksandr Lotkov, Anatoly Baturin, Vladimir Kopylov, Victor Grishkov, Roman Laptev   +4 more
doaj   +1 more source