Results 111 to 120 of about 64,212 (257)

Simulations of Radiological Dose Quantities in Astronauts During Solar Energetic Particle Events Across Modern Space History

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Solar Particle Events (SPEs) represent one of the most significant hazards to future crewed space missions. Accurate assessment of radiation doses received by astronauts during these events is essential for determining the shielding requirements in spacecraft and off‐planet shelter design.
Sylvain Blunier, Piers Jiggens, Juan A. Valdivia, Aidan Cowley   +3 more
wiley   +1 more source

Sensitive Volume Modeling in Calculation of Space Radiation-Induced SEU Cross Section [PDF]

فصلنامه علوم و فناوری فضایی, 2014
Shape and size of sensitive volume are the most important parameters to model electronic devices for calculation of the SEU rate from space radiations. So far different models have been proposed for estimation of the sensitive volume.
S. Boorboor, S. A. H. Feghhi, H. Jafari
doaj  

Investigating the Role of Bismuth Oxide and Gadolinium Oxide as an Enhancer of the Gamma Shielding Ability of Polymer Compounds Based on Unsaturated Resin Using the Monte Carlo Simulation Geant4 Tool [PDF]

Journal of Advanced Materials in Engineering
The presence of lead as the first radiation shielding with a series of good features such as high density and having some flexibility and a series of inappropriate features such as toxicity, low physical and chemical stability, and high weight, has long ...
M. Rahmani Vareki, Mahdi Eshghi, M.R. Alipoor   +2 more
doaj   +1 more source

The Impact of BeamCal Performance at Different ILC Beam Parameters and Crossing Angles on \tilde{tau} searches

, 2006
The ILC accelerator parameters and detector concepts are still under discussion in the world-wide community. As will be shown, the performance of the BeamCal, the calorimeter in the very forward area of the ILC detector, is very sensitive to the beam ...
FCAL Collaboration, GEANT4 Collaboration, P. Bambade, V. Drugakov, W. Lohmann   +4 more
core   +1 more source

Spectral Analysis of Flickering Gamma‐Ray Flashes Observed During the ALOFT 2023 Campaign

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 23, 16 December 2025.
Abstract We examine a newly discovered category of high‐energy radiation events called flickering gamma‐ray flashes (FGF) detected during the airborne lightning observatory for FEGS and TGFs campaign in July 2023. These FGFs are characterized by highly pulsating gamma‐ray emissions that have no detectable concurrent optical or radio signals (Ostgaard ...
D. Sarria, N. Østgaard, I. Bjørge‐Engeland, A. Mezentsev, M. Marisaldi, N. Lehtinen, M. Stanley, T. Lang, C. Schultz, A. Fuglestad   +9 more
wiley   +1 more source

Electron-hadron shower discrimination in a liquid argon time projection chamber [PDF]

, 2013
By exploiting structural differences between electromagnetic and hadronic showers in a multivariate analysis we present an efficient Electron-Hadron discrimination algorithm for liquid argon time projection chambers, validated using Geant4 simulated ...
A. Ankowski, A. Ereditato, A. J. Bennieston, A. Rubbia, B. Andrieu, B. Fleming, B. Morgan, C. Andreopoulos, C. Rubbia, C.B. Barber, E. Aprile, E.F. Martinez, G. J. Barker, I.T. Jolliffe, J. J. Back, M. Tanaka, P. Huber, P. Speckmayer, S. Agostinelli, S. Amoruso, S. B. Boyd, T.E. Oliphant, Y. A. Ramachers   +22 more
core   +2 more sources

Dosimetric characterization of a Varex VF‐80/μXHP x‐ray unit using open‐ended applicators for superficial radiotherapy

Journal of Applied Clinical Medical Physics, Volume 26, Issue 12, December 2025.
Abstract Background Kilovoltage x‐ray units (50–150 kVp) are widely used for skin cancer treatments, necessitating precise dosimetric characterization to ensure accurate dose delivery. This study validates the depth dose data of the VF‐80/𝜇XHP (80 kV, 100 W) x‐ray system for use in low‐kV therapy with a contemporary detector.
Muhammad Zeeshan, Yikai Wu, Zhongyu Qi, Ning Gao, Xi Pei, Xie George Xu   +5 more
wiley   +1 more source

Dose Calculations of SPECT Simulations on Dynamical Targets with GATE / GEANT4

Cumhuriyet Science Journal, 2019
Simulations of SPECT studies have been taken attention withthe fact that more accurate results can be constructed in medical imaging with developingcomputing techniques.
Sinan Kuday
doaj   +1 more source

Response of a proportional counter to $^{37}$Ar and $^{71}$Ge: measured spectra versus Geant4 simulation

, 2016
The energy deposition spectra of $^{37}$Ar and $^{71}$Ge in a miniature proportional counter are measured and compared in detail to the model response simulated with Geant4.
Abdurashitov, D. N, Malyshkin, Yu. M, Matushko, V. L., Suerfu, B.   +3 more
core   +1 more source

Monte Carlo simulations of geometric deformation of Harrison–Anderson–Mick applicators used in intraoperative radiation therapy

Journal of Applied Clinical Medical Physics, Volume 26, Issue 12, December 2025.
Abstract Background The Harrison–Anderson–Mick (HAM) applicator is a high‐dose‐rate intraoperative radiotherapy (HDR‐IORT) applicator used to position Ir‐192 brachytherapy sources over surgically‐accessed tumor volumes or post‐resection tumor beds.
Benjamin Insley, Brett Bocian, Sam Beddar, Reza Reiazi, Patrick James Jensen, Rachael M. Martin‐Paulpeter, Joshua Scott Niedzielski, David Flint, Gabriel Oliveira Sawakuchi, Luis Augusto Perles   +9 more
wiley   +1 more source