scholarly journals Monte Carlo calculation of organ and effective doses due to photon and neutron point sources and typical X-ray examinations: Results of an international intercomparison exercise

2021 ◽  
pp. 106695
Author(s):  
Christelle Huet ◽  
Jonathan Eakins ◽  
Maria Zankl ◽  
José María Gómez-Ros ◽  
Jan Jansen ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Calculation ◽  
Point Sources ◽  
Intercomparison Exercise ◽  
X Ray ◽  
Effective Doses ◽  
International Intercomparison

Monte Carlo calculation of A 3 B (111) ordering transition and surface X-ray intensities

1990 ◽  
Vol 46 (2) ◽  
pp. 86-94 ◽  
Author(s):  
X.-M. Zhu ◽  
H. Zabel
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Calculation ◽  
Incident Angle ◽  
Surface Region ◽  
Conducting Surface ◽  
X Ray ◽  
Main Emphasis ◽  
Simulation Results ◽  
Ordering Transition ◽  
Surface Diffraction

A Monte Carlo simulation of an ordering phase transition in the surface region of a f.c.c.-type A 3 B binary alloy is reported. The main emphasis of this simulation is the evaluation of short and long-range-order correlations near the surface which are used for calculating X-ray intensities under grazing-incident-angle conditions. These calculations suggest effective ways of conducting surface diffraction experiments on order-disorder phase transitions. The simulation results are also compared with available experimental data.

Monte Carlo Calculation of X-Rays Deposited Energy in CdZnTe Detector

2007 ◽  
Vol 555 ◽  
pp. 141-146 ◽  
Author(s):  
Srboljub J. Stanković ◽  
M. Petrović ◽  
M. Kovačević ◽  
A. Vasić ◽  
P. Osmokrović ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Calculation ◽  
Absorbed Dose ◽  
Detector Response ◽  
X Rays ◽  
X Ray ◽  
Cdznte Detector ◽  
Deposited Energy ◽  
Photon Direction ◽  
Cdznte Detectors

CdZnTe detectors have been employed in diagnostic X-ray spectroscopy. This paper presents the Monte Carlo calculation of X-ray deposited energy in a CdZnTe detector for different energies of photon beam. In incident photon direction, the distribution of absorbed dose as deposited energy in detector is determined. Based on the dependence of the detector response on the thickness and different Zn fractions, some conclusions about changes of the material characteristics could be drawn. Results of numerical simulation suggest that the CdZnTe detector could be suitable for X-ray low energy.

A Monte Carlo calculation of the x-ray production from multilayer samples

1991 ◽  
Vol 49 ◽  
pp. 532-533
Author(s):  
T. D. Ly ◽  
D. G. Howitt
Keyword(s):  
Monte Carlo ◽  
Layered Structure ◽  
Electron Microprobe ◽  
Monte Carlo Calculation ◽  
Monte Carlo Program ◽  
Step Size ◽  
Homogeneous Sample ◽  
X Ray ◽  
Microstructural Effects ◽  
Signal Production

The X ray generation and absorption from a sample in an SEM or Electron Microprobe depends upon the geometry as well as the composition. Various schemes for calculating the X-ray signal from a homogeneous sample have been developed but few have addressed the problem associated with the presence of distinct microstructures. We have developed a Monte Carlo program to calculate the signal production from a multilayer sample as a first step to the incorporation of microstructural effects.The X-ray production from a layered structure is different from a homogeneous sample because the signal production and absorption are discontinuous. The differences can be calculated if the layer thicknesses and positions can be taken into account. The principle behind the calculation we have undertaken is the continuously monitor the energy and position of the electron in the specimen. Each trajectory is calculated in the usual stepwise manner except that the step size and scattering probability are continuously adjusted to accommodate the scale of the microstructure.

Sign in / Sign up

Export Citation Format

Share Document