Absorption of charged particles in perfectly matched layers by optimal damping of the deposited current

Lehe, Remi; Blelly, Aurore; Giacomel, Lorenzo; Jambunathan, Revathi; Vay, Jean-Luc

doi:10.1103/physreve.106.045306

Absorption of charged particles in perfectly matched layers by optimal damping of the deposited current

Journal Article · Tue Oct 18 00:00:00 EDT 2022 · Physical Review. E

DOI:https://doi.org/10.1103/physreve.106.045306· OSTI ID:1992463

^[1]; ^[2]; ^[3]; ^[1]; Vay, Jean-Luc ^[1]

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. Paris-Saclay (France)
European Organization for Nuclear Research (CERN), Geneva (Switzerland)

Perfectly matched layers (PMLs) are widely used in particle-in-cell simulations, in order to absorb electromagnetic waves that propagate out of the simulation domain. However, when charged particles cross the interface between the simulation domain and the PMLs, a number of numerical artifacts can arise. Here, in order to mitigate these artifacts, we introduce a PML algorithm whereby the current deposited by the macroparticles in the PML is damped by an analytically derived optimal coefficient. The benefits of this algorithm are illustrated in practical simulations. In particular, it is shown that this algorithm is well suited for particles exiting the box in near-normal incidence, in the sense that the fields behave as if the exiting particle is propagating in an infinite vacuum.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1992463

Journal Information:: Physical Review. E, Journal Name: Physical Review. E Journal Issue: 4 Vol. 106; ISSN 2470-0045

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Supplementary data: Absorption of charged particles in Perfectly-Matched-Layers by optimal damping of the deposited current Lehe, Remi Zenodo https://doi.org/10.5281/zenodo.7011364	dataset	January 2022

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