Results 71 to 80 of about 29,213 (196)

First Images of a Three-layer Compton Telescope Prototype for Treatment Monitoring in Hadron Therapy

Frontiers in Oncology, 2016
A Compton telescope for dose monitoring in hadron therapy is under development at IFIC. The system consists of three layers of LaBr3 crystals coupled to silicon photomultiplier arrays.
Gabriela eLlosa, Marco eTrovato, John eBarrio, Ane eEtxebeste, Enrique eMunoz, Carlos eLacasta, Josep F. Oliver, Magdalena eRafecas, Carles eSolaz, Paola eSolevi   +9 more
doaj   +1 more source

A Boost Converter Employing Quadratic Sawtooth Waveform Generator for SiPM-Based Radiation Sensors

Chemosensors, 2021
This paper proposes an optimized step-up power converter using a quadratic sawtooth waveform generator for a silicon photomultiplier (SiPM) used as a radiation sensor for mobile radiation dosimeters.
Hyuntak Jeon
doaj   +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

Performance evaluation of novel SiPM for medical imaging applications [PDF]

Silicon Photomultiplier (SiPM) detectors are investigated world-wide as a suitable replacement for the conventional vacuum based PhotoMultiplier Tube (PMT) and are enabling applications otherwise not possible with PMT detectors.
Jackson, Carl, O'Neill, Kevin, Seitz, Bjoern, Stewart, Andrew G., Wall, Liam   +4 more
core   +1 more source

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

Advanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding, Danny E. P. Vanpoucke, Yunus T. Aksoy, Tobias Corthouts, Maria R. Vetrano, Wim Deferme   +5 more
wiley   +1 more source

Correlated noise analysis and breakdown voltage distribution measurement, modelling of silicon photomultipliers [PDF]

, 2017
A 80-as évek végén Golovin és Sadygov által javasolt pixelizált Geiger-módban működő lavina fotodiódák, más néven a szilícium alapú fotoelektron-sokszorozók (silicon photomultiplier, SiPM), számos olyan tulajdonsággal bírnak, amelyek alkalmassá teszik ...
Nagy, Ferenc
core  

Experimental test of magnetic photons

, 2004
A "magnetic" photon hypothesis associated with magnetic monopoles is tested experimentally. These photons are predicted to easily penetrate metal. Experimentally the optical transmittance T of a metal foil was less than 2 x 10^-17.
Barrow, Davies, Dirac, Fineberg, Goldhaber, Hagen, Ignatiev, Katz, Kühne, Lakes, Luo, Marques, Proca, R.S. Lakes, Salam, Taylor   +15 more
core   +1 more source

Selective Charge Extraction Allows Fast Photomultiplication and Imaging in Rigid and Ultra‐Flexible SWIR Organic Photodiodes

Advanced Energy Materials, EarlyView.
SWIR donor polymer TQ‐3T allows photomultiplication in OPD in 1:1 ratio with NFA Y6, achieving EQEs > 1100% at ‐10 V. Microseconds response times are retained, amongst the lowest for photomultiplication. As proof of concept, we demonstrate ultrathin and flexible PM‐OPDs based on our TQ‐3T:Y6 as a flexible pulse oximeter as well as a conformable image ...
Matilde Brunetta, Zhuoran Qiao, Davide Nodari, Kosei Sasaki, Francesco Furlan, Martina Rimmele, Hongki Kim, Hongting Chen, Yusaku Tagawa, Adam Marsh, Rushil Vasant, Sang Do, Xabier Rodríguez‐Martínez, Anirudh Sharma, Christos L. Chochos, Jaime Martin, Martin Heeney, Koen Vandewal, Derya Baran, Thuc‐Quyen Nguyen, Bob C. Schroeder, Takao Someya, Tomoyuki Yokota, Nicola Gasparini   +23 more
wiley   +1 more source

First demonstration of a Compton gamma imager based on silicon photomultipliers

, 2012
We are developing a rugged and person-transportable Compton gamma imager for use in security investigations of radioactive materials, and for radiological incident remediation.
A.M.L. MacLeod, D.S. Hanna, Eckert, H.C.J. Seywerd, Hoover, Kovaltchouk, Kurfess, L.E. Sinclair, LeBlanc, Otte, P.J. Boyle, P.R.B. Saull, Sinclair, Takada, Takeda, Todd, Vetter   +16 more
core   +1 more source

Degradation Mechanisms of Rutile‐Type TiO2 Photoanodes during Photoelectrochemical Water Splitting

Advanced Energy Materials, EarlyView.
Combining operando dissolution measurements with microscopy and spectroscopy characterizations, we reveal different degradation mechanisms of rutile‐type TiO2 photoanodes during photoelectrochemical water splitting. In acidic electrolytes, degradation is inhibited once TiO2 reaches saturation.
Yiqun Jiang, Raquel Aymerich‐Armengol, Ilias Efthimiopoulos, Martin Rabe, Andrea M. Mingers, Ningyan Cheng, Benjamin Breitbach, Saswati Santra, Verena Streibel, Ian D. Sharp, Lilian Vogl, Christina Scheu, Siyuan Zhang   +12 more
wiley   +1 more source