Monte Carlo calculations of drift velocities and diffusion coefficients of Ar+ ions in helium

AbstractSome problems of the theory of electron transfer in gases under the action of a strong external electric field is considered in the paper. Based on the three-dimensional ELSHOW algorithm, samples of states of particles in an electron avalanche are obtained for a given time moment in order to calculate the corresponding ‘diffusion radii’ and diffusion coefficients. Randomized projection estimators and kernel estimators (for test purpose) are constructed with the use of grouped samples for evaluation of the distribution density of particles in an avalanche. Test computations demonstrate a high efficiency of projection estimators for calculation of diffusive characteristics.

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Variational and diffusion quantum Monte Carlo calculations at nonzero wave vectors: Theory and application to diamond-structure germanium

Physical Review B ◽

10.1103/physrevb.51.10591 ◽

1995 ◽

Vol 51 (16) ◽

pp. 10591-10600 ◽

Cited By ~ 69

Author(s):

G. Rajagopal ◽

R. J. Needs ◽

A. James ◽

S. D. Kenny ◽

W. M. C. Foulkes

Keyword(s):

Monte Carlo ◽

Quantum Monte Carlo ◽

Diamond Structure ◽

Monte Carlo Calculations ◽

And Diffusion

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Monte Carlo calculations of hot-electron transport and diffusion noise in GaN and InN

Semiconductor Science and Technology ◽

10.1088/0268-1242/20/3/004 ◽

2005 ◽

Vol 20 (3) ◽

pp. 279-285 ◽

Cited By ~ 9

Author(s):

E Starikov ◽

P Shiktorov ◽

V Gružinskis ◽

L Reggiani ◽

L Varani ◽

...

Keyword(s):

Monte Carlo ◽

Electron Transport ◽

Hot Electron ◽

Monte Carlo Calculations ◽

Transport And Diffusion ◽

Hot Electron Transport ◽

And Diffusion

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Ripple transport at low collision frequency

Journal of Plasma Physics ◽

10.1017/s0022377800002907 ◽

1985 ◽

Vol 34 (2) ◽

pp. 327-336 ◽

Cited By ~ 3

Author(s):

W. N. G. Hitchon ◽

C. D. Beidler ◽

H. E. Mynick ◽

J. L. Shohet

Keyword(s):

Monte Carlo ◽

Diffusion Coefficient ◽

Diffusion Coefficients ◽

Transport Mechanism ◽

Collision Frequency ◽

Analytic Theory ◽

Heuristic Argument ◽

Monte Carlo Calculations ◽

Magnitude Scaling

A new stellarator ripple-transport mechanism is predicted at the low collision frequencies characteristic of ions in a reactor plasma. A heuristic argument is used to derive an approximate diffusion coefficient whose magnitude, scaling and range of applicability agree well with the results of Monte Carlo calculations. The proposed diffusion coefficient is independent of collision frequency within its range of validity, which encompasses the parameters of most ions in a reactor. Its magnitude is smaller than previous estimates for the diffusion coefficient in this range, but larger than the diffusion coefficients in all other low-collision-frequency regimes. An explanation of the form of the diffusion coefficient is given in terms of analytic theory of ripple transport.

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A Kinetic Monte Carlo Simulation Study of Synthesis Variables and Diffusion Coefficients in Early Stages of Silicate Oligomerization

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.5b07605 ◽

2015 ◽

Vol 119 (52) ◽

pp. 28871-28884 ◽

Cited By ~ 7

Author(s):

Marine Ciantar ◽

Caroline Mellot-Draznieks ◽

Carlos Nieto-Draghi

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Simulation Study ◽

Diffusion Coefficients ◽

Kinetic Monte Carlo ◽

Monte Carlo Simulation Study ◽

Kinetic Monte Carlo Simulation ◽

Early Stages ◽

And Diffusion

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Variational and diffusion quantum Monte Carlo calculations with the CASINO code

The Journal of Chemical Physics ◽

10.1063/1.5144288 ◽

2020 ◽

Vol 152 (15) ◽

pp. 154106 ◽

Cited By ~ 9

Author(s):

R. J. Needs ◽

M. D. Towler ◽

N. D. Drummond ◽

P. López Ríos ◽

J. R. Trail

Keyword(s):

Monte Carlo ◽

Quantum Monte Carlo ◽

Monte Carlo Calculations ◽

And Diffusion

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Characterization of Ar[sub n]O[sup −] clusters from ab initio and diffusion Monte Carlo calculations

The Journal of Chemical Physics ◽

10.1063/1.1531110 ◽

2003 ◽

Vol 118 (6) ◽

pp. 2748 ◽

Cited By ~ 7

Author(s):

Jacek Jakowski ◽

Grzegorz Chałasiński ◽

Joseph Gallegos ◽

Mark W. Severson ◽

M. M. Szczȩśniak

Keyword(s):

Monte Carlo ◽

Ab Initio ◽

Diffusion Monte Carlo ◽

Monte Carlo Calculations ◽

And Diffusion

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Radiolysis of supercritical water at 400 °C and liquid-like densities near 0.5 g/cm3 — A Monte Carlo calculation

Canadian Journal of Chemistry ◽

10.1139/v10-055 ◽

2010 ◽

Vol 88 (7) ◽

pp. 646-653 ◽

Cited By ~ 16

Author(s):

Jintana Meesungnoen ◽

David Guzonas ◽

Jean-Paul Jay-Gerin

Keyword(s):

Monte Carlo ◽

Supercritical Water ◽

Diffusion Coefficients ◽

Monte Carlo Calculation ◽

Picosecond Pulse ◽

Good Accord ◽

Radiation Induced ◽

Sum Formula ◽

Available Information ◽

And Diffusion

Monte Carlo simulations are used to calculate the primary radical yields [Formula: see text], g(•OH), the sum [[Formula: see text] + g(•OH) + g(H•)], and the ratio g(H•)/[Formula: see text] in the low linear energy transfer (LET) radiolysis of supercritical water (SCW) at 400 °C in the high-density, liquid-like region near ∼0.5 g/cm3. Using all the currently available information on the reactivities and diffusion coefficients of the radiation-induced species under these conditions, and assuming the aqueous medium to be a “continuum”, a good accord is found between our calculations and the available experimental data. In particular, our computed [Formula: see text] yields at 60 ps and 1 ns compare very well with recently reported direct time-dependent [Formula: see text] yield measurements in SCW (D2O) at 400 °C and 0.570 g/cm3 using picosecond pulse radiolysis experiments.

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