نتایج جستجو برای: srim

تعداد نتایج: 145  

2003
M. D. Gray M. G. Edmunds

We have applied the SRIM computer code to study the sputtering of some likely astrophysical grain materials, and we have shown that selective embedding of metallic projectiles offers a partial explanation of gas-phase depletions. We show that supernova shockwaves sweep a significantly larger mass of interstellar gas per unit time than the shockwaves generated by outflows in star-forming regions...

Journal: :iranian journal of science and technology (sciences) 2008
m. r eskandari

the ionization effects of charged particles produced in neutron interactions for boron neutroncapture therapy are considered here using srim monte carlo code. the estimated values of these effects ina plexiglas acrylic phantom are shown to agree well with the available experimental values in high boronconcentration areas. as expected, the ionization effects from lithium and alpha particles are ...

Journal: :Gazi university journal of science part a:engineering and innovation 2023

In this study, the changes in performance parameters of silicon photovoltaic cells were investigated before and after irradiation. For aim, current-voltage power-voltage characteristics structures obtained The electrical determined using characteristics. High energetic (24.5 MeV) proton beam was used as radiation source. addition, radiation-induced displacement damages SRIM/TRIM simulations, ef...

ژورنال: سنجش و ایمنی پرتو 2016

Neutron spectrum and intensity that produced from H218O target bombardment were determined. SRIM and ALICE computer codes were applied to H218O target and its Titanium window for 17 MeV incident proton beam from cyclotron Cyclone30. Using calculated neutron intensity and spectrum as the source, equivalent dose rate at a certain distance from the target was calculated by the MCNP computer code a...

Journal: :Radiation Physics and Chemistry 2021

A model to determine the dose rate of a planar alpha-emitting surface has been developed. The approach presented is computationally efficient mathematical using stopping range data from Stopping Ranges Ions in Matter (SRIM) software. alpha rates as function distance irradiated UO2 spent fuel surfaces were produced for benchmarking with previous modelling attempts. This method able replicate Mon...

2016
D. Nikezic Mehrdad Shahmohammadi Beni D. Krstic K. N. Yu

Monte Carlo method has been used to determine the efficiency for proton production and to study the energy and angular distributions of the generated protons. The ENDF library of cross sections is used to simulate the interactions between the neutrons and the atoms in a polyethylene (PE) layer, while the ranges of protons with different energies in PE are determined using the Stopping and Range...

2009
Scott R. Messenger Edward A. Burke Robert J. Walters Jeffrey H. Warner Geoffrey P. Summers Justin R. Lorentzen Steven J. Taylor

An analysis of the effects of low energy proton irradiation on the electrical performance of triple junction (3J) InGaP2/GaAs/Ge solar cells is presented. The Monte Carlo ion transport code (SRIM) is used to simulate the damage profile induced in a 3J solar cell under the conditions of typical ground testing and that of the space environment. The results are used to present a quantitative analy...

ژورنال: سنجش و ایمنی پرتو 2020

Damage of tungsten due to helium and argon ions of a PF device was studied. Tungsten samples were irradiated by 20 shots of the plasma focus device with argon and helium as working gases, separately. The tungsten surface was analyzed by SEM, before and after irradiation. SEM revealed dense blisters with diameters of a few hundred nanometers, on the samples which were irradiated by helium ions, ...

Hossein Tavakoli-Anbaran, Somayeh Jahanfar

Introduction: Proton therapy is a type of radiation treatment that it uses protons to treat cancer. Because of the protons’ unique ability to distribute the radiation dose more directly to the tumor, it minimizes the damage to nearby healthy tissues. The rate of energy loss by the ion in the target is called stopping power. The total stopping power is sum nuclear and electroni...

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