Results 91 to 100 of about 54,450 (311)

PMT calibration of a scintillation detector using primary scintillation [PDF]

Journal of Instrumentation, 2015
We have studied the calibration of PMTs in scintillation detectors, inducing single electron response on the PMT from primary scintillation produced by x-ray interaction. The results agree with those obtained by the commonly used single electron response (SER) method, which uses LED light pulses to induce the PMT SER.
E.D.C. Freitas, L.M.P. Fernandes, N. Yahlali, J. Pérez, V. Álvarez, F.I.G. Borges, M. Camargo, S. Cárcel, S. Cebrián, A. Cervera, C.A.N. Conde, T. Dafni, J. Díaz, R. Esteve, P. Ferrario, A.L. Ferreira, V.M. Gehman, A. Goldschmidt, H. Gómez, J.J. Gómez-Cadenas, D. González Díaz, R.M. Gutiérrez, J. Hauptman, J.A. Hernando Morata, D.C. Herrera, I.G. Irastorza, L. Labarga, A. Laing, I. Liubarsky, N. Lopez-March, D. Lorca, M. Losada, G. Luzón, A. Marí, J. Martín-Albo, A. Martínez, G. Martínez Lema, T. Miller, F. Monrabal, M. Monserrate, F.J. Mora, L.M. Moutinho, J. Muñoz Vidal, M. Nebot Guinot, D. Nygren, C.A.B. Oliveira, J. Pérez, J.L. Pérez Aparicio, M. Querol, J. Renner, L. Ripoll, A. Rodríguez, J. Rodríguez, F.P. Santos, J.M.F. Dos Santos, L. Seguí, L. Serra, D. Shuman, A. Simón, C. Sofka, M. Sorel, J.F. Toledo, J. Torrent, Z. Tsamalaidze, J.F.C.A. Veloso, J.A. Villar, R. Webb, J. White, C.M.B. Monteiro   +68 more
openaire   +3 more sources

RESPONSE OF CsI:Pb SCINTILLATOR CRYSTAL TO NEUTRON RADIATION

EPJ Web of Conferences, 2018
The helium-3 world crisis requires a development of new methods of neutron detection to replace commonly used 3He proportional counters. In the past decades, great effort was made to developed efficient and fast scintillators to detect radiation.
Costa Pereira Maria da Conceição, Filho Tufic Madi, Berretta José Roberto, Náhuel Cárdenas José Patrício, Iglesias Rodrigues Antonio Carlos   +4 more
doaj   +1 more source

Comparative Test of Novel Fluorescent Optical Antennas for LED‐ and Laser‐Based Optical Wireless Communications

Advanced Optical Materials, EarlyView.
New fluorescent optical antennas are realized and tested for diverse Optical Wireless Communication (OWC) applications. The fluorescent concentrator slabs, based on different organic fluorophores, convert and convey the digital data conveyed through intensity modulation of incoming light toward a small‐area photodiode.
Marco Meucci, Mauro Aresti, Giulio Cossu, Lorenzo Gilli, Luca Oliviero, Matteo Bartolini, Andrea Pucci, Ernesto Ciaramella, Jacopo Catani   +8 more
wiley   +1 more source

Composite materials based on quantum dots and polymer matrices for gamma radiation registration in the next-generation scintillation detectors [PDF]

Digital Diagnostics
BACKGROUND: The development of new scintillation materials based on fluorescent nanocrystals with a perovskite structure of CsPbBr3 composition and CdSe/ZnS quantum dots is a pressing topic that is being pursued by numerous scientific groups [1–4].
Alexander A. Knysh, Valery V. Sosnovtsev, Igor R. Nabiev, Pavel S. Samokhvalov   +3 more
doaj   +1 more source

Measuring Thickness-Dependent Relative Light Yield and Detection Efficiency of Scintillator Screens

Journal of Imaging, 2020
Digital camera-based neutron imaging systems consisting of a neutron scintillator screen optically coupled to a digital camera are the most common digital neutron imaging system used in the neutron imaging community and are available at any state-of-the ...
William C. Chuirazzi, Aaron E. Craft
doaj   +1 more source

Interstellar scintillation is an indicator of astrometric stability [PDF]

, 2013
We examine the relationship between astrometric stability and astrophysical properties in flat-spectrum radio-loud quasars making up the celestial reference frame. We use position determinations from geodetic VLBI measurements, and develop a new metric for source position stability.
arxiv   +1 more source

From Photo‐Damage to Self‐Healing in Thin Film Pb‐Iodide Perovskites: Action at a Distance

Advanced Optical Materials, EarlyView.
Fluorescence imaging uncovers pronounced spatial and temporal changes in photoluminescence of halide perovskite films following laser‐induced damage. Modifications spatially extend well beyond the illuminated region and evolve over distinct time scales ranging from seconds to many hours, revealing material‐specific self‐healing pathways. These findings
Yahel Soffer, Dipanwita Roy, Pallavi Singh, David Cahen, Dan Oron   +4 more
wiley   +1 more source

High‐Fidelity Information Transmission Through the Turbulent Atmosphere Utilizing Partially Coherent Cylindrical Vector Beams

Advanced Photonics Research, EarlyView.
A novel free‐space optical communication protocol that combines the benefits of partially coherent light sources with the decoding capabilities of convolutional neural networks is proposed. This approach establishes a robust communication link that can withstand atmospheric turbulence.
Linxuan Yao, Hui Zhang, Yangsheng Yuan, Yaru Gao, Chunhao Liang, Sergey A. Ponomarenko, Yangjian Cai   +6 more
wiley   +1 more source

Research Progress on Atmospheric Turbulence Perception and Correction Based on Adaptive Optics and Deep Learning

Advanced Photonics Research, EarlyView.
This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu, Yihang Di, Mengmeng Zhang, Zhenbo Ren, Jianglei Di, Jianlin Zhao   +5 more
wiley   +1 more source

Geant4 simulation study of β-γ coincidence detector for 41Ar measurement

He jishu
Background41Ar is one of the main radionuclides released into the environment by the operation of reactors and accelerators. The measurement of 41Ar activity concentration is of great significance for ensuring public health.
FENG Yajie, ZHANG Ruiqin, NIU Yazhou, LI Qi, TONG Lili, WANG Shilian, ZHAO Yungang, FAN Yuanqing, ZHANG Xinjun   +8 more
doaj   +1 more source