Electron–ion recombination in radiation tracks in liquid argon: a computer simulation study

Jaskolski, Michal; Wojcik, Mariusz

doi:10.1007/s11164-009-0047-3

Cited by 2 publications

(11 citation statements)

References 26 publications

(47 reference statements)

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“…We adopted Wojcik's criterion for recombination, i.e. E < E crit = 1 eV and r electron−ion < r crit = 1.3 nm 19 . Following recombination, the electron and ion are removed from the simulation.…”

Section: Electron Transport Model Resultsmentioning

confidence: 99%

“…Thermal motion of electrons is accounted for in the same way as in Ref. 19 . The energy and momentum transfer cross sections for lowenergy electron transport (E < 10 eV) were also adopted from Ref.…”

Section: Electron Transport Modelmentioning

confidence: 99%

“…At each time step the forces on the electrons and ions due to Coulomb and external fields are calculated 17 . Velocities and positions of electrons and ions are forward propagated to the subsequent time step of the simulation using the Verlet algorithm 19 . Thermal motion of electrons is accounted for in the same way as in Ref.…”

Section: Electron Transport Modelmentioning

confidence: 99%

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Low-energy (<10keV) electron ionization and recombination model for a liquid argon detector

Foxe

Hagmann

Jovanovic

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Detailed understanding of the ionization process in noble liquid detectors is important for their use in applications such as the search for dark matter and coherent elastic neutrino-nucleus scattering. The response of noble liquid detectors to low-energy ionization events is poorly understood at this time. We describe a new simulation tool which predicts the ionization yield from electronic energy deposits (E < 10 keV) in liquid Ar, including the dependence of the yield on the applied electric drift field. The ionization signal produced in a liquid argon detector from 37 Ar beta decay and 55 Fe X-rays has been calculated using the new model.

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Section: Electron Transport Model Resultsmentioning

confidence: 99%

Section: Electron Transport Modelmentioning

confidence: 99%

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Low-energy (<10keV) electron ionization and recombination model for a liquid argon detector

Foxe

Hagmann

Jovanovic

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…For several years, we have worked on a realistic method of modeling the track recombination processes in LAr that would allow for the quantitative explanation of the experimental data. In a recent article, we suggested a new approach that, in our opinion, has the potential to accurately predict the charge collection efficiency in irradiated LAr by computer simulations. An essential part of our approach is the use of the model of electron transport in LAr developed by Wojcik and Tachiya .…”

Section: Introductionmentioning

confidence: 99%

“…In ref , we described the preliminary stage of our work, which was mainly focused on the technical aspects of simulating electron motion and reactions in LAr. We also tested the feasibility of our new approach to calculating the free-ion yield in ionization clusters in this medium.…”

Section: Introductionmentioning

confidence: 99%

Electron Recombination in Ionized Liquid Argon: A Computational Approach Based on Realistic Models of Electron Transport and Reactions

Jaskolski

Wojcik

2011

J. Phys. Chem. A

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In this work, we propose a new theoretical approach to modeling the electron-ion recombination processes in ionization tracks in liquid argon at 87 K. We developed a computer simulation method using realistic models of charge transport and electron-ion reactions. By introducing the concept of one-dimensional periodicity in the track, we are able to model very large cylindrical structures of charged particles. We apply our simulation method to calculate the electron escape probability as a function of the initial ionization density in the track. The results are in quantitative agreement with experiment for radiation tracks of relatively high ionization density. At low ionization densities, the simulation results slightly overestimate the experimental data. We discuss possible reasons for this disagreement and conclude that it can be explained by the role of δ tracks (short tracks of secondary electrons) in electron-ion recombination processes. We introduce an approximate model that takes into account the presence of δ tracks and allows the experimental data obtained from a liquid-argon ionization detector to be reproduced over a wide range of ionization density.

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Electron–ion recombination in radiation tracks in liquid argon: a computer simulation study

Cited by 2 publications

References 26 publications

Low-energy (<10keV) electron ionization and recombination model for a liquid argon detector

Low-energy (<10keV) electron ionization and recombination model for a liquid argon detector

Electron Recombination in Ionized Liquid Argon: A Computational Approach Based on Realistic Models of Electron Transport and Reactions

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