Results 291 to 300 of about 382,328 (344)

Out‐of‐field neutron radiation from clinical proton, helium, carbon, and oxygen ion beams

Medical Physics, EarlyView.
Abstract Background In hadron therapy, out‐of‐field doses, which may in the long‐term cause secondary cancers, are mostly due to neutrons. Very recently, 4He and 16O beams have been added to protons and 12C ions for clinical therapy. Purpose The focus of this article is to compare secondary neutron doses produced by clinical protons, 4He, 12C, and 16O ...
Matteo Bolzonella, Marco Caresana, Andrea Cirillo, Josep M. Martí‐Climent, Evangelina Martínez‐Francés, Christina Mooshammer, Stefan Schmidt, Stephan Brons, Marco Silari, Christina Stengl, Liliana Stolarczyk, José Vedelago   +11 more
wiley   +1 more source

Sensitivity analysis of fluorescent nuclear track detectors for fast and high‐energy mono‐energetic neutron dosimetry

Medical Physics, EarlyView.
Abstract Background In ion beam radiotherapy, treatment radiation fields are inevitably contaminated with secondary neutrons. The energies of these neutrons can reach several hundreds of MeV. Fluorescent nuclear track detectors (FNTDs) offer a promising solution for dosimetry of fast and high‐energy neutrons, particularly given their low linear energy ...
Stefan Schmidt, Jeppe B. Christensen, Benjamin Lutz, Alberto Stabilini, Eduardo G. Yukihara, José Vedelago   +5 more
wiley   +1 more source

The multi-slit very small angle neutron scattering instrument at the China Spallation Neutron Source. [PDF]

J Appl Crystallogr
Zuo T, Han Z, Ma C, Xiao S, Lin X, Li Y, Wang F, He Y, He Z, Zhang J, Wang G, Cheng H.   +11 more
europepmc   +1 more source

Scattering of Thermal Neutrons in the Doppler Approximation

, 1962
S.N. Purohit, A. K. Rajagopal
openalex   +2 more sources

Megavoltage photon FLASH for preclinical experiments

Medical Physics, EarlyView.
Abstract Background FLASH radiotherapy using megavoltage (MV) photon beams should enable greater therapeutic efficacy, target deep seated tumors, and provide insights into mechanisms within FLASH. Purpose In this study, we aim to show how to facilitate ultra‐high dose rates (FLASH) with MV photons over a field size of 12–15 mm, using a 6 MeV (nominal ...
Edward R. J. F. Taylor, Iain D. C. Tullis, Borivoj Vojnovic, Kristoffer Petersson   +3 more
wiley   +1 more source

THE CALCULATION OF THERMAL-NEUTRON SCATTERING KERNELS IN GRAPHITE

, 1961
D. E. Parks
openalex   +2 more sources

Experimental validation of Geant4 nuclear interaction models in dose calculations of therapeutic carbon ion beams

Medical Physics, EarlyView.
Abstract Background The choice of nuclear interaction models in Monte Carlo simulations affects the dose calculation accuracy for light ion beam therapy. Purpose This study aimed to evaluate the dose calculation accuracy and simulation time of three GATE‐RTiON/Geant4 physics lists for therapeutic carbon ion beams, assessing their suitability for ...
Yihan Jia, Martina Favaretto, Lisa Hartl, Markus Stock, Dietmar Georg, Loïc Grevillot, Andreas F. Resch   +6 more
wiley   +1 more source

Small-Angle Neutron Scattering Insights into 2-Ethylhexyl Laurate: A Remarkable Bioester. [PDF]

ACS Sustain Chem Eng
Hammond OS, Morris DC, Bousrez G, Li S, de Campo L, Recsei C, Moir M, Glavatskih S, Rutland MW, Mudring AV.   +9 more
europepmc   +1 more source

A Framework for Estimating Matric Suction in Compacted Fine‐Grained Soils Based on a Machine Learning‐Assisted Conceptual Model

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT In this study, a hybrid black‐ and white‐box machine learning (ML) framework is proposed for matric suction estimation in compacted fine‐grained soils, utilizing ML techniques, namely, particle swarm optimized support vector regression (PSO‐SVR) and multi‐gene genetic programming (MGGP). This objective is achieved through developing a novel ML‐
Junjie Wang, Sai Vanapalli
wiley   +1 more source

Quantifying Molecular Properties of Hexagonal Water Clusters

ChemistryOpen, EarlyView.
Standard quantum chemical calculations on large hexagonal water clusters allow us to analyze the fundamental properties of ice‐Ih. Computed geometrical structure, energies, and vibrational spectra are astonishingly close to experimental data without the introduction of any external empirical parameters.
Giuseppe Lanza
wiley   +1 more source