scholarly journals Improved linearized model collision operator for the highly collisional regime

2019 ◽  
Vol 26 (10) ◽  
pp. 102108 ◽  
Author(s):  
H. Sugama ◽  
S. Matsuoka ◽  
S. Satake ◽  
M. Nunami ◽  
T.-H. Watanabe
Keyword(s):  
Collision Operator ◽  
Model Collision ◽  
Linearized Model ◽  
Collisional Regime

scholarly journals Evolution Equation and Transport Coefficients of Swarms in Initial Relaxation Processes

1987 ◽  
Vol 40 (3) ◽  
pp. 367 ◽  
Author(s):  
Keiichi Kondo
Keyword(s):  
Evolution Equation ◽  
Transport Coefficients ◽  
Collision Operator ◽  
Operator Method ◽  
Time Dependent ◽  
Relaxation Processes ◽  
Projection Operator Method ◽  
Model Collision ◽  
The Difference ◽  
Dependent Transport

The problem of a swarm approaching the hydrodynamic regime is studied by using the projection operator method. An evolution equation for the density and the related time-dependent transport coefficient are derived. The effects of the initial condition on the transport characteristics of a swarm are separated from the intrinsic evolution of the swarms, and the difference from the continuity equation with time-dependent transport coefficients introduced by Tagashira et al. (1977, 1978) is discussed. To illustrate this method, calculations on the relaxation model collision operator have been carried out. The results are found to agree with the analysis by Robson (1975).

Velocity Fourier transform solution of a model collision operator

1979 ◽  
Vol 22 (9) ◽  
pp. 1647 ◽  
Author(s):  
Peter J. Catto
Keyword(s):  
Fourier Transform ◽  
Collision Operator ◽  
Model Collision

scholarly journals Linearized model collision operators for multiple ion species plasmas and gyrokinetic entropy balance equations

2009 ◽  
Vol 16 (11) ◽  
pp. 112503 ◽  
Author(s):  
H. Sugama ◽  
T.-H. Watanabe ◽  
M. Nunami
Keyword(s):  
Balance Equations ◽  
Entropy Balance ◽  
Model Collision ◽  
Linearized Model ◽  
Ion Species

A Model Collision Operator for Orbit Averaged Monte Carlo Codes

2006 ◽  
Author(s):  
T. Hellsten ◽  
T. Johnson
Keyword(s):  
Monte Carlo ◽  
Collision Operator ◽  
Model Collision

Neoclassical transport simulations with an improved model collision operator

2021 ◽  
Vol 28 (6) ◽  
pp. 064501
Author(s):  
S. Matsuoka ◽  
H. Sugama ◽  
Y. Idomura
Keyword(s):  
Collision Operator ◽  
Neoclassical Transport ◽  
Model Collision ◽  
Improved Model

scholarly journals Improved Krook model collision operator for trapped-particle mode calculations

1981 ◽  
Author(s):  
J. DeLucia ◽  
G. Rewoldt
Keyword(s):  
Collision Operator ◽  
Model Collision

Three dimensional deblurring of transmitted-light brightfield micrographs

1993 ◽  
Vol 51 ◽  
pp. 564-565
Author(s):  
Santosh Bhattacharyya
Keyword(s):  
Image Reconstruction ◽  
Three Dimensional ◽  
Transmitted Light ◽  
Reconstruction Algorithms ◽  
3D Image Reconstruction ◽  
Structural Details ◽  
Spread Function ◽  
Early Testing ◽  
Linearized Model ◽  
Image Reconstruction Algorithms

Three dimensional microscopic structures play an important role in the understanding of various biological and physiological phenomena. Structural details of neurons, such as the density, caliber and volumes of dendrites, are important in understanding physiological and pathological functioning of nervous systems. Even so, many of the widely used stains in biology and neurophysiology are absorbing stains, such as horseradish peroxidase (HRP), and yet most of the iterative, constrained 3D optical image reconstruction research has concentrated on fluorescence microscopy. It is clear that iterative, constrained 3D image reconstruction methodologies are needed for transmitted light brightfield (TLB) imaging as well. One of the difficulties in doing so, in the past, has been in determining the point spread function of the system.We have been developing several variations of iterative, constrained image reconstruction algorithms for TLB imaging. Some of our early testing with one of them was reported previously. These algorithms are based on a linearized model of TLB imaging.

A theorem concerning the asymptotic collision operator

1973 ◽  
Vol 59 (1) ◽  
pp. 642-652
Author(s):  
Peter Murray Allen
Keyword(s):  
Collision Operator

scholarly journals Benchmark of a new multi-ion-species collision operator for δf Monte Carlo neoclassical simulation

2020 ◽  
Vol 255 ◽  
pp. 107249 ◽  
Author(s):  
Shinsuke Satake ◽  
Motoki Nataka ◽  
Theerasarn Pianpanit ◽  
Hideo Sugama ◽  
Masanori Nunami ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Collision Operator ◽  
Ion Species
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