scholarly journals SIMULATION OF PHOTON AND ELECTRON TRANSPORT BY MONTE CARLO METHOD

2010 ◽  
Vol 13 (2) ◽  
pp. 5-14
Author(s):  
Tan Thanh Nguyen ◽  
Phuong Nguyen Dang ◽  
Loan Thi Hong Truong
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Detection Efficiency ◽  
Radiation Transport ◽  
Radiation Detection ◽  
Dose Calculation ◽  
Radiation Shielding ◽  
Fast Calculation ◽  
Transport Simulation ◽  
Program Show

There are many radiation transport simulation codes using Monte Carlo method in the world nowaday. These codes have many applications such as: dose calculation, investigating radiation detection efficiency, designing radiation shielding, . . . However, these codes are too expensive or too difficult to be applied in many different specific purposes. In this work, we built a radiation transport simulation program based on Monte Carlo method using C++ programing language with the purpose of fast calculation and easy to use. The simulation results of this program show a good agreement in compared to MCNP results.

GaN Radiation Detection Research Based on Monte Carlo Method

2014 ◽  
Vol 668-669 ◽  
pp. 1011-1014
Author(s):  
Yang Liu ◽  
Guo Zheng Zhu ◽  
Zhen Ni Xing
Keyword(s):  
Monte Carlo ◽  
Energy Deposition ◽  
Detection Efficiency ◽  
Hadron Collider ◽  
Radiation Detection ◽  
Radiation Energy ◽  
Radiation Detectors ◽  
Detection Mechanism ◽  
Radiation Beam ◽  
The Impact

Gallium nitride (GaN) is the third generation of semiconductor material; it has a large band gap, high thermal conductivity, low dielectric constant, high drift speed, etc. Radiation detectors based on GaN material have small volume, high radiation resistance, and fast response, can be used to replace the existing Large Hadron Collider vertex detector and track detector. Energy deposition characteristic of GaN detectors to radiation beam is an important factor for detection efficiency, and there are many factors that affect the energy deposition characteristics of the detector, like the detection mechanism, the impact of material properties, the type of incident ray, radiation energy, and many other factors. This paper studies the physical properties of GaN detector by calculation based on Monte Carlo simulation. Energy deposition characteristics are discussed respectively for incident γ-ray with different energy, in the front-end and back-end add PTFE material. The results of our study present the theoretical properties of GaN radiation detectors.

Experimental verification of dose calculation using the simplified Monte Carlo method with an improved initial beam model for a beam-wobbling system

2013 ◽  
Vol 58 (17) ◽  
pp. 6047-6064 ◽  
Author(s):  
Ryohei Tansho ◽  
Yoshihisa Takada ◽  
Ryosuke Kohno ◽  
Kenji Hotta ◽  
Yousuke Hara ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Experimental Verification ◽  
Dose Calculation ◽  
Beam Model ◽  
Initial Beam

Cattle’s Thyroid Dose Estimation with Compartmental Model of Iodine Metabolism and Monte Carlo Transport Technique

2018 ◽  
pp. 48-54
Author(s):  
Ю. Кураченко ◽  
Yu. Kurachenko ◽  
Н. Санжарова ◽  
N. Sanzharova ◽  
Г. Козьмин ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Thyroid Gland ◽  
Compartmental Model ◽  
Radiation Transport ◽  
Absorbed Dose ◽  
Dose Calculation ◽  
Average Dose ◽  
Monte Carlo Code ◽  
Thyroid Dose ◽  
The Subject

Purpose: This work aims first to improve the reliability of absorbed dose calculation in critical organs of cattle during internal irradiation immediately after radiation accidents by a) improving the compartmental model of radionuclide metabolism in animal body; b) the use of precision computing technologies for modeling as the domain, and the actual radiation transport. In addition, the aim of the work is to determine the agreed values of the 131I critical dose in the cattle thyroid, leading to serious gland dysfunction and its follow-up destruction. Material and methods: To achieve aforecited goals, comprehensive studies were carried out to specify the parameters of the compartmental model, based on reliable experimental and theoretical data. Voxel technologies were applied for modeling the subject domain (thyroid gland and its environment). Finally, to solve the 131I radiation transport equation, the Monte Carlo code was applied, which takes into account the contribution of gamma and beta radiation source, and the contribution of the entire chain of secondary radiations in the dose calculation, up to the total energy dissipation. Results: As the main theoretical result, it is necessary to emphasize the conversion factor from the 131I activity, distributed uniformly in volume of the thyroid gland, to the average dose rate in the gland (Bq × Gy/s). This factor was calculated for both cows and calves in the selected domain configuration and thyroid morphology. The main practical result is a reliable estimation the lower bound of the absorbed dose in the thyroid, which in a short time leads to its destruction under internal 131I irradiation: ~300 Gy. Conclusion: Usage a compartmental model of the 131I metabolism with biokinetic parameters, received on the basis of reliable experimental data, and precise models of both the subject area and radiation transport for evaluation the dose in the cattle thyroid after the radiation accident allowed to obtain reliable values of the thyroid dose, adducting to its destruction at short notice.

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