Results 81 to 90 of about 727,683 (238)

A single-layer compton camera for nuclear decommissioning: An improved back-projection algorithm

Nuclear Engineering and Technology
The decommissioning of nuclear facilities, a critical and hazardous process due to radiation exposure, necessitates the advancement of radiological measurement techniques concerning safety and efficiency.
Mattias Simons, Anouk Michiels, Jan Genoe, Wouter Schroeyers   +3 more
doaj   +1 more source

Performance evaluation of MACACO II Compton camera

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021
Abstract The IRIS group at IFIC-Valencia has developed a second version of a Compton camera prototype for hadron therapy treatment monitoring, with the aim of improving the performance with respect to its predecessor. The system is composed of three Lanthanum (III) bromide (LaBr3) crystals coupled to silicon photomultipliers (SiPMs).
L. Barrientos, M. Borja-Lloret, A. Etxebeste, E. Muñoz, J.F. Oliver, A. Ros, J. Roser, C. Senra, R. Viegas, G. Llosá   +9 more
openaire   +2 more sources

On the Beam Characteristics of X‐Ray Bursts Observed in Rocket‐Triggered Lightning

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Employing the multi‐station Thunderstorm Energetic Radiation Observation System, we detected X‐ray bursts during two rocket‐triggered lightning events in 2024. By innovatively integrating optical imaging with three‐dimensional lightning channel reconstruction based on Distributed Acoustic Sensing (DAS), we analyzed the X‐ray emission ...
Yuan Wang, Peng Li, Yang Zhang, Heting Hong, Xiao Li, Yanfeng Fan, Baofeng Cao, Weiqun Xu, Zongxiang Li, Weitao Lyu, Gaopeng Lu, Xiong Zhang, Xiaoqiang Li   +12 more
wiley   +1 more source

Radiation imaging using an integrated Radiation Imaging System based on a compact Compton camera under unit 1/2 exhaust stack of Fukushima Daiichi Nuclear Power Station

Journal of Nuclear Science and Technology, 2021
The Fukushima Daiichi Nuclear Power Station (FDNPS) went into meltdown after being hit by a large tsunami caused by the Great East Japan Earthquake on 11 March 2011.
Yuki Sato, Y. Terasaka
semanticscholar   +1 more source

Quantifying stent‐induced dose perturbations in intravascular brachytherapy using 3D‐ printed phantoms and film dosimetry

Journal of Applied Clinical Medical Physics, Volume 27, Issue 1, January 2026.
Abstract Background Coronary artery disease (CAD), the leading cause of death worldwide, is the narrowing of coronary arteries due to atherosclerotic plaque buildup. A common treatment for CAD is percutaneous coronary intervention (PCI), often involving stent placement. However, a common complication or in‐stent restenosis (ISR) can occur in 10%–20% of
Jessica S. Jung, Lyu Huang, Nicholas Coupera, Yijian Cao, Jenghwa Chang   +4 more
wiley   +1 more source

A Compton camera prototype for prompt gamma medical imaging

EPJ Web of Conferences, 2016
Compton camera prototype for a position-sensitive detection of prompt γ rays from proton-induced nuclear reactions is being developed in Garching. The detector system allows to track the Comptonscattered electrons.
Thirolf P.G., Aldawood S., Böhmer M., Bortfeldt J., Castelhano I., Dedes G., Fiedler F., Gernhäuser R., Golnik C., Helmbrecht S., Hueso-González F., Kolff H. v.d., Kormoll T., Lang C., Liprandi S., Lutter R., Marinšek T., Maier L., Pausch G., Petzoldt J., Römer K., Schaart D., Parodi K.   +22 more
doaj   +1 more source

Evaluation of sequence tracking methods for Compton cameras based on CdZnTe arrays

Nuclear Engineering and Technology, 2021
In this study, the performance of sequence tracking methods for multiple interaction events in specific CdZnTe Compton imagers was evaluated using Monte Carlo simulations. The Compton imager consisted of a 6 × 6 array of virtual Frisch-grid CZT crystals,
Jun Lee, Younghak Kim, Aleksey Bolotnikov, Wonho Lee   +3 more
doaj   +1 more source

Spot size measurements in the Eli-NP compton gamma source [PDF]

, 2016
A high brightness electron Linac is being built in the Compton Gamma Source at the ELI Nuclear Physics facility in Romania. To achieve the design luminosity, a train of 32 bunches with a nominal charge of 250 pC and 16 ns ...
Chiadroni, E., Cianchi, A., Cioeta, Fara, Di Pirro, G., Franzini, Giovanni, Marongiu, Marco, Mostacci, Andrea, Palumbo, Luigi, Shapakov, V., Stella, A., Variola, A.   +10 more
core  

The TeV Energy Spectrum of Mrk 421 Measured in A High Flaring State [PDF]

, 2007
The BL Lac object (blazar) Mrk 421 was observed during its outburst in April 2004 with the Whipple 10 m telescope for a total of about 24.5 hours. The measured gamma-ray rate varied substantially over the range from 4 to 10 gamma's/min and eventually ...
Albert, Alexander Konopelko, Blazejowski, Charlie Duke, Finley, John P. Finley, Kildea, Konopelko, Krawczynski, Krennrich, Mastichiadis, Wei Cui   +11 more
core   +3 more sources

Aqueous grinding synthesis of high‐performance alkali/alkaline earth metal‐tuned copper(I) iodide cluster scintillators for underwater x‐ray imaging

InfoMat, Volume 8, Issue 1, January 2026.
Highly efficient Cu(I)‐iodine cluster halides were synthesized via an aqueous grinding method, which is characterized by simplicity and environmental friendliness. One of the prepared NaCuI scintillator screens was integrated with a thin‐film transistor backplane array. The developed x‐ray flat‐panel detector exhibited outstanding operational stability
Haixing Meng, Ying Li, Yancheng Chen, Jingli Ma, Minqi Zhu, Zhifeng Shi, Fangze Liu, Guozhen Shen   +7 more
wiley   +1 more source