Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile

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Abstract

Strong scattering during electron cyclotron resonance heating (ECRH) experiments in several magnetically confined fusion devices has been attributed to parametric decay instabilities (PDIs). Analytical modeling has shown that a non-monotonic density profile and excitation of trapped waves through two plasmon decay (TPD) play an important role. Using a particle-in-cell (PIC) code, decay of an X-mode wave into waves trapped inside a non-monotonic density profile is observed. The time evolution and composition of the daughter waves are investigated for different density profiles. A build up of the TPD daughter waves is only observed when they are supported by the plasma.
Original languageEnglish
Publication date2019
Number of pages4
Publication statusPublished - 2019
Event46th EPS Conference on Plasma Physics - Milan, Italy
Duration: 8 Jul 201912 Sep 2019

Conference

Conference46th EPS Conference on Plasma Physics
CountryItaly
CityMilan
Period08/07/201912/09/2019

Cite this

Senstius, M. G., Nielsen, S. K., & Vann, R. G. L. (2019). Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile. Paper presented at 46th EPS Conference on Plasma Physics, Milan, Italy.
Senstius, M. G. ; Nielsen, S. K. ; Vann, R. G. L. / Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile. Paper presented at 46th EPS Conference on Plasma Physics, Milan, Italy.4 p.
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abstract = "Strong scattering during electron cyclotron resonance heating (ECRH) experiments in several magnetically confined fusion devices has been attributed to parametric decay instabilities (PDIs). Analytical modeling has shown that a non-monotonic density profile and excitation of trapped waves through two plasmon decay (TPD) play an important role. Using a particle-in-cell (PIC) code, decay of an X-mode wave into waves trapped inside a non-monotonic density profile is observed. The time evolution and composition of the daughter waves are investigated for different density profiles. A build up of the TPD daughter waves is only observed when they are supported by the plasma.",
author = "Senstius, {M. G.} and Nielsen, {S. K.} and Vann, {R. G. L.}",
year = "2019",
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note = "46th EPS Conference on Plasma Physics, EPS 2019 ; Conference date: 08-07-2019 Through 12-09-2019",

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Senstius, MG, Nielsen, SK & Vann, RGL 2019, 'Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile', Paper presented at 46th EPS Conference on Plasma Physics, Milan, Italy, 08/07/2019 - 12/09/2019.

Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile. / Senstius, M. G.; Nielsen, S. K.; Vann, R. G. L.

2019. Paper presented at 46th EPS Conference on Plasma Physics, Milan, Italy.

Research output: Contribution to conferencePaperResearchpeer-review

TY - CONF

T1 - Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile

AU - Senstius, M. G.

AU - Nielsen, S. K.

AU - Vann, R. G. L.

PY - 2019

Y1 - 2019

N2 - Strong scattering during electron cyclotron resonance heating (ECRH) experiments in several magnetically confined fusion devices has been attributed to parametric decay instabilities (PDIs). Analytical modeling has shown that a non-monotonic density profile and excitation of trapped waves through two plasmon decay (TPD) play an important role. Using a particle-in-cell (PIC) code, decay of an X-mode wave into waves trapped inside a non-monotonic density profile is observed. The time evolution and composition of the daughter waves are investigated for different density profiles. A build up of the TPD daughter waves is only observed when they are supported by the plasma.

AB - Strong scattering during electron cyclotron resonance heating (ECRH) experiments in several magnetically confined fusion devices has been attributed to parametric decay instabilities (PDIs). Analytical modeling has shown that a non-monotonic density profile and excitation of trapped waves through two plasmon decay (TPD) play an important role. Using a particle-in-cell (PIC) code, decay of an X-mode wave into waves trapped inside a non-monotonic density profile is observed. The time evolution and composition of the daughter waves are investigated for different density profiles. A build up of the TPD daughter waves is only observed when they are supported by the plasma.

M3 - Paper

ER -

Senstius MG, Nielsen SK, Vann RGL. Particle-in-cell simulations of two plasmon decay in a non-monotonic density profile. 2019. Paper presented at 46th EPS Conference on Plasma Physics, Milan, Italy.