Results 141 to 150 of about 25,563 (307)

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

CRYSTAL SCINTILLATOR

, 1996
FIELD: recording particles from accelerators and radioactive sources. SUBSTANCE: scintillator has silver halides in following proportion ( mass percent): silver chloride - 22.0-27.0; silver bromide - 77.99-72.50; silver iodide - 0.01-0.50.
Шульгин, Б. В., Китаев, Г. А., Buzmakova, S. I., Gavrilov, L. F., Бузмакова, С. И., Жуков, В. В., Zhukov, V. V., Жукова, Л. В., Shulgin, B. V., Kitaev, G. A., Гаврилов, Л. Ф., Zhukova, L. V.   +11 more
core  

Three‐Year Propagation Experiment at Ku‐, Ka‐, and Q‐Band in French West Indies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT From January 2021 to December 2023, the Office National d'Etudes et de Recherches Aérospatiales (ONERA) and the Centre National d'Etudes Spatiales (CNES) conducted a three‐year Earth‐space propagation measurement campaign in Guadeloupe. The experiment used beacon receivers deployed in Pointe‐à‐Pitre airport to record signals at 11.2, 19.7, and
Jean‐Pascal Monvoisin, Laurent Castanet, Laurent Féral, Xavier Boulanger   +3 more
wiley   +1 more source

A gamma-ray spectrometer based on MAPD-3NM-2 and LaBr3(ce) and LSO scintillators for hydrogen detection on planetary surfaces

Scientific Reports
The presented work is dedicated to the detection of hydrogen, using detectors based on a MAPD (Micropixel Avalanche Photodiode) array based on new MAPD-3NM-2 type photodiodes and two different scintillators (LaBr3(Ce) and LSO(Ce)).
F. Ahmadov, A. Sadigov, Yu. Yu. Bacherikov, O. Okhrimenko, K. Isayev, M. Holik, T. Slavicek, F. Mamedov, G. Ahmadov, A. Mammadli, R. Akbarov, J. Nagiyev, D. Berikov, S. Nuruyev, Z. Sadygov, Yu. Shitov, S. I. Lyubchyk, S. B. Lyubchyk   +17 more
doaj   +1 more source

Preprocessing Procedure for Propagation Measurements on MEO Satellite Links

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper presents a software tool designed for preprocessing data from an experimental campaign aimed at characterizing the tropospheric propagation channel using Medium Earth Orbit (MEO) satellites. The collected data provide critical insights into the channel in scenarios involving continuous variations in azimuth and elevation, along with
Marlene Brás, Susana Mota, Armando Rocha   +2 more
wiley   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Scintillator-fiber charged particle track-imaging detector

, 1983
A scintillator-fiber charged-particle track-imaging detector was developed using a bundle of square cross section plastic scintillator fiber optics, proximity focused onto an image intensified charge injection device (CID) camera.
Binns, W. R., Israel, M. H., Klarmann, J.   +2 more
core  

Tailoring the Melting and Glass Transition Behavior of Zeolitic Imidazolate Frameworks via Ammonium Halide Salts

Small, EarlyView.
Ammonium halide salts serve as inorganic modifiers that lower the melting and glass transition temperatures of zeolitic imidazolate frameworks, enabling centimeter‐scale hybrid glasses and melt processing of otherwise unmeltable ZIF‐8. In situ imaging and pair distribution function analysis reveal salt infiltration, Zn─N bond disruption, and Zn–halide ...
Fengming Cao, Søren S. Sørensen, Anders K. R. Christensen, Xuan Ge, Martin A. Karlsen, Giulio Monaco, Lothar Wondraczek, Morten M. Smedskjaer   +7 more
wiley   +1 more source

Study of the KMgF3 scintillator radiation damage

, 2020
Radiation damages of the KMgF3 scintillator have been studied under irradiation with γ-rays. The KMgF3 scintillator radiation resistance is found to be equal to 100 krad.
Kochetkov V., Mityagin M., Britvich G., Vistin L., Zibrov I., Buzulutskov A.   +5 more
core  

Synthesis of Samarium‐incorporated X‐ray‐sensitive nanoparticles and hydrogels: Diverse applications in radiation monitoring and dynamic information display

Smart Molecules, EarlyView.
Sm3+‐doped α‐NaLuF4 and β‐NaLuF4 were synthesized. The X‐ray‐activated persistent luminescence abilities and afterglow properties can be well controlled. Sm3+‐doped β‐NaLuF4 exhibits remarkable afterglow ability. The hexagonal β‐NaLuF4:3%Sm3+‐incorporated hydrogel can be further programmed with other types of hydrogels to enable tunable emission ...
Zetong Zhang, Yujie Chen, Yuanyao Chen, Leipeng Li, Yonggang Wu, Yanmin Yang, Hailei Zhang   +6 more
wiley   +1 more source