Abstract ID: 13 Monte Carlo simulations for the beam quality factors of a parallel-plate ion-chamber in the presence of magnetic field

2018 ◽  
Vol 45 ◽  
pp. S1
Author(s):  
Jaegi Lee ◽  
Sung-Joon Ye
Keyword(s):  
Magnetic Field ◽  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Parallel Plate ◽  
Beam Quality ◽  
Quality Factors ◽  
Ion Chamber

Dosimetry in MARS spectral CT: TOPAS Monte Carlo simulations and ion chamber measurements

2017 ◽  
Vol 40 (2) ◽  
pp. 297-303
Author(s):  
Gray Lu ◽  
Steven Marsh ◽  
Jerome Damet ◽  
Pierre Carbonez ◽  
John Laban ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Spectral Ct ◽  
Ion Chamber ◽  
Chamber Measurements

Theoretical Study of Twin Boundary Motion in Heusler Ni-Mn-Ga Alloys Using Monte Carlo Method

2012 ◽  
Vol 190 ◽  
pp. 327-330
Author(s):  
K.I. Kostromitin ◽  
Vasiliy D. Buchelnikov ◽  
V.V. Sokolovskiy ◽  
P. Entel
Keyword(s):  
Magnetic Field ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Monte Carlo Simulations ◽  
Twin Boundary ◽  
Constant Temperature ◽  
Theoretical Study ◽  
Heusler Alloys ◽  
Boundary Motion ◽  
Different Temperatures

The twin boundary motion in Ni-Mn-Ga Heusler alloys has been investigated using Monte Carlo simulations. The Hamiltonian of system includes magnetic and elastic parts and two magnetoelastic terms. It is shown that the twin boundary shifts in a magnetic field at the constant temperature. The spin and strain volume fractions have been obtained at different temperatures.

Domain Analysis and Magnetic Relaxation in Thin Films

1998 ◽  
Vol 09 (06) ◽  
pp. 821-825 ◽  
Author(s):  
Tatiana G. Rappoport ◽  
F. S. de Menezes ◽  
L. C. Sampaio ◽  
M. P. Albuquerque ◽  
F. Mello
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Monte Carlo ◽  
Ising Model ◽  
Monte Carlo Simulations ◽  
Magnetic Relaxation ◽  
Film Plane ◽  
Relative Strength ◽  
Two Dimensional ◽  
Magnetic Domains

We have simulated the magnetic relaxation (M(t)) and the nucleation of magnetic domains in the presence of magnetic field in thin films with anisotropy perpendicular to the film plane. We have used Monte Carlo simulations based on the two-dimensional classical Ising model including the long-range dipole–dipole and Zeeman interactions. Domains nucleated during the magnetic relaxation exhibit very rough interfaces. We analyze the roughness and the M(t) as a function of the relative strength of dipole–dipole and Zeeman terms.

Quasi-2D Monte Carlo Simulations of a Colloidal Dispersion Composed of Magnetic Plate-Like Particles With Magnetic Moment Normal to the Particle Axis

2008 ◽  
Author(s):  
Akira Satoh ◽  
Yasuhiro Sakuda
Keyword(s):  
Magnetic Field ◽  
Monte Carlo ◽  
Field Strength ◽  
Monte Carlo Simulations ◽  
Magnetic Field Strength ◽  
Magnetic Moment ◽  
Colloidal Dispersion ◽  
Magnetic Interactions ◽  
The Magnetic Field ◽  
Aggregation Phenomena

We have investigated aggregation phenomena of a colloidal dispersion composed of magnetic plate-like particles by means of Monte Carlo simulations. Such plate-like particles have been modeled as disk-like particles which have a magnetic moment normal to the particle axis at the particle center, with the section shape of a spherocylinder. The main objective of the present study is to clarify the influences of magnetic field strength and magnetic interactions between particles on particle aggregation phenomena. We have concentrated our attention on a quasi-2D system from an application point of view such as development of surface changing technology using such magnetic plate-like particles. A magnetic field was applied along a direction perpendicular to the plane of the monolayer. Internal structures of particle aggregates have been discussed quantitatively in terms of radial distribution and orientational pair correlation functions. The main results obtained here are summarized as follows. For the case of strong magnetic interactions between particles, the particles form long column-like clusters with their magnetic moments alternating in direction between the neighboring particles. These tendencies appear under circumstances of a weak applied magnetic field. However, as the magnetic field strength increases, the particles incline toward the magnetic field direction, so that the particles do not form such clusters.

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