Results 41 to 50 of about 25,558 (262)

Modeling of scavenging systems in water radiolysis with Geant4-DNA.

open access: yesPhysica medica (Testo stampato), 2023
PURPOSE This paper presents the capabilities of the Geant4-DNA Monte Carlo toolkit to simulate water radiolysis with scavengers using the step-by-step (SBS) or the independent reaction times (IRT) methods.
F. Chappuis   +7 more
semanticscholar   +1 more source

The general-purpose Geant4 Monte Carlo toolkit and its Geant4-DNA extension to investigate mechanisms underlying the FLASH effect in radiotherapy: Current status and challenges.

open access: yesPhysica medica (Testo stampato), 2023
FLASH radiotherapy is a promising approach to cancer treatment that offers several advantages over conventional radiotherapy. With this novel technique, high doses of radiation are delivered in a short period of time, inducing the so-called FLASH effect -
F. Chappuis   +6 more
semanticscholar   +1 more source

Elemental analysis of tissue in proton therapy using photopeak count of prompt gamma spectrum [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
nline elemental analysis of irradiated tissue in proton therapy is a major part of this treatment, since it leads to accurate estimation of the depth of Bragg peak, proton range, and distribution of stopping power of irradiated tissue.
F. Saheli   +3 more
doaj   +1 more source

Simulation of dark bremsstrahlung in Geant4

open access: yesComputer Physics Communications, 2023
A technique for the simulation of dark bremsstrahlung for electrons and muons in GEANT4 is presented. The total cross section is calculated using the Weizsäcker-Williams approximation and the outgoing kinematics are produced by scaling events produced in MadGraph/MadEvent to lower incident lepton energies, allowing the simulation to account for thick ...
Thomas Eichlersmith   +5 more
openaire   +2 more sources

Review of the Geant4-DNA Simulation Toolkit for Radiobiological Applications at the Cellular and DNA Level

open access: yesCancers, 2021
Simple Summary A brief description of the methodologies to simulate ionizing radiation transport in biologically relevant matter is presented. Emphasis is given to the physical, chemical, and biological models of Geant4-DNA that enable mechanistic ...
I. Kyriakou   +11 more
semanticscholar   +1 more source

Calculation of spectrum and neutron flux density in experimental channels of WWR-M reactor

open access: yesЯдерна фізика та енергетика, 2021
A program for calculating the spectra and densities of neutron fluxes in the experimental channels of the research reactor WWR-M was developed. To do this, the reactor core was modeled. Irradiation of neutron activation detectors was performed.
O. G. Diakov   +4 more
doaj   +1 more source

Status of the Geant4 models for nuclear de-excitation [PDF]

open access: yesEPJ Web of Conferences
The Geant4 hadronic physics sub-library includes an extended set of models for highand low-energy hadronic interactions. We report on recent developments in the Geant4 nuclear de-excitation module, which is used by many Geant4 models to simulate the de ...
Chalyi Nikita   +2 more
doaj   +1 more source

Measurement of out of field doses in brain proton therapy with GATE simulations

open access: yesCumhuriyet Science Journal, 2021
Proton therapy as one of the radiotherapy applications, aims to treat the tumor by using the accelerated proton particle. High radiation dose distributions delivered to the tumor tissue, is characterized with Bragg curves, while the radiation in the ...
Melisa Sönmez, Sinan Kuday
doaj   +1 more source

Adding the X‐ray Bragg reflection physical process in crystal to the Geant4 Monte Carlo simulation toolkit, part I: reflection from a crystal slab

open access: yesPrecision Radiation Oncology, 2023
X‐ray diffraction from a solid crystal shows the wave nature of photons. It is an important electromagnetic (EM) physics process when X‐ray photons interact with a crystal.
F. Guan   +5 more
semanticscholar   +1 more source

Geant4 Simulation of Photon- and Neutron-Shielding Capabilities of Biopolymer Blends of Poly(lactic acid) and Poly(hydroxybutyrate)

open access: yesPolymers, 2023
Simulation is used by scientists to imitate a real-life experimental setup in order to save time, costs and effort. Geant4, a toolkit based on the Monte Carlo method, has been widely used in investigating the radiation-shielding properties of different ...
H. Akhdar, Maryam Alshehri
semanticscholar   +1 more source

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