Theodorsen, Audun
Associate Professor / Complex Systems Modeling
- Decristoforo, Gregor; Theodorsen, Audun; Omotani, John; Nicholas, Tom; Garcia, Odd Erik. Numerical turbulence simulations of intermittent fluctuations in the scrape-off layer of magnetized plasmas. Physics of Plasmas 2021; Volum 28. ISSN 1070-664X.s doi: 10.1063/5.0047566.
- Kube, Ralph; Theodorsen, Audun; Garcia, Odd Erik; Brunner, D; Labombard, B; Terry, James L.. Comparison between mirror Langmuir probe and gas-puff imaging measurements of intermittent fluctuations in the Alcator C-Mod scrape-off layer. Journal of Plasma Physics 2020; Volum 86 (5). ISSN 0022-3778.s doi: 10.1017/S0022377820001282.
- Decristoforo, Gregor; Theodorsen, Audun; Garcia, Odd Erik. Intermittent fluctuations due to Lorentzian pulses in turbulent thermal convection. Physics of Fluids 2020; Volum 32 (8). ISSN 1070-6631.s doi: 10.1063/5.0012017.
- Kube, Ralph; Garcia, Odd Erik; Theodorsen, Audun; Kuang, Adam; LaBombard, Brian; Terry, Jim L.; Brunner, Dan. Statistical properties of the plasma fluctuations and turbulent cross-field fluxes in the outboard mid-plane scrape-off layer of Alcator C-Mod. Nuclear Materials and Energy 2019; Volum 18. ISSN 2352-1791.s 193 - 200.s doi: 10.1016/j.nme.2018.11.021.
- Kuang, AQ; LaBombard, Brian; Brunner, D; Garcia, Odd Erik; Kube, Ralph; Theodorsen, Audun. Plasma fluctuations in the scrape-off layer and at the divertor target in Alcator C-Mod and their relationship to divertor collisionality and density shoulder formation. Nuclear Materials and Energy 2019; Volum 19. ISSN 2352-1791.s 295 - 299.s doi: 10.1016/j.nme.2019.02.038.
- Theodorsen, Audun; Garcia, Odd Erik; Kube, Ralph; LaBombard, Brian; Terry, James L.. Universality of Poisson-driven plasma fluctuations in the Alcator C-Mod scrape-off layer. Physics of Plasmas 2018; Volum 25. ISSN 1070-664X.s doi: 10.1063/1.5064744.
- Theodorsen, Audun; Garcia, Odd Erik. Probability distribution functions for intermittent scrape-off layer plasma fluctuations. Plasma Physics and Controlled Fusion 2018; Volum 60 (3). ISSN 0741-3335.s 1 - 14.s doi: 10.1088/1361-6587/aa9f9c.
- Theodorsen, Audun; Garcia, Odd Erik. Level crossings and excess times due to a superposition of uncorrelated exponential pulses. Physical review. E 2018; Volum 97 (1). ISSN 2470-0045.s 1 - 18.s doi: 10.1103/PhysRevE.97.012110.
- Kube, Ralph; Garcia, Odd Erik; Theodorsen, Audun; Brunner, Daniel; Kuang, Adam; LaBombard, Brian; Terry, James L.. Intermittent electron density and temperature fluctuations and associated fluxes in the Alcator C-Mod scrape-off layer. Plasma Physics and Controlled Fusion 2018; Volum 60 (6). ISSN 0741-3335.s 1 - 16.s doi: 10.1088/1361-6587/aab726.
- Garcia, Odd Erik; Kube, Ralph; Theodorsen, Audun; Labombard, B; Terry, J.L. Intermittent fluctuations in the Alcator C-Mod scrape-off layer for ohmic and high confinement mode plasmas. Physics of Plasmas 2018; Volum 25 (5). ISSN 1070-664X.s doi: 10.1063/1.5018709.
- Garcia, Odd Erik; Theodorsen, Audun. Intermittent fluctuations due to uncorrelated Lorentzian pulses. Physics of Plasmas 2018; Volum 25 (1). ISSN 1070-664X.s doi: 10.1063/1.5020555.
- Garcia, Odd Erik; Theodorsen, Audun. Skewed Lorentzian pulses and exponential frequency power spectra. Physics of Plasmas 2018; Volum 25 (1). ISSN 1070-664X.s doi: 10.1063/1.5004811.
- Theodorsen, Audun; Garcia, Odd Erik; Kube, Ralph; LaBombard, Brian; Terry, Jim L.. Relationship between frequency power spectra and intermittent, large-amplitude bursts in the Alcator C-Mod scrape-off layer. Nuclear Fusion 2017; Volum 57 (11). ISSN 0029-5515.s 1 - 7.s doi: 10.1088/1741-4326/aa7e4c.
- Theodorsen, Audun; Garcia, Odd Erik; Rypdal, Martin Wibe. Statistical properties of a filtered Poisson process with additive random noise: distributions, correlations and moment estimation. Physica Scripta 2017; Volum 92 (5). ISSN 0031-8949.s doi: 10.1088/1402-4896/aa694c.
- Garcia, Odd Erik; Theodorsen, Audun. Power law spectra and intermittent fluctuations due to uncorrelated Lorentzian pulses. Physics of Plasmas 2017; Volum 24 (2). ISSN 1070-664X.s 1 - 5.s doi: 10.1063/1.4975645.
- Garcia, Odd Erik; Theodorsen, Audun. Auto-correlation function and frequency spectrum due to a super-position of uncorrelated exponential pulses. Physics of Plasmas 2017; Volum 24 (3). ISSN 1070-664X.s 1 - 13.s doi: 10.1063/1.4978955.
- Garcia, Odd Erik; Kube, Ralph Arthur; Theodorsen, Audun; Bak, J. G.; Hong, SH; Kim, H.S.; the,, KSTAR project team; Pitts, RA. SOL width and intermittent fluctuations in KSTAR. Nuclear Materials and Energy 2016; Volum 12. ISSN 2352-1791.s 36 - 43.s doi: 10.1016/j.nme.2016.11.008.
- Kube, Ralph; Theodorsen, Audun; Garcia, Odd Erik; LaBombard, Brian; Terry, James L.. Fluctuation statistics in the scrape-off layer of Alcator C-Mod. Plasma Physics and Controlled Fusion 2016; Volum 58:054001 (5). ISSN 0741-3335.s 1 - 13.s doi: 10.1088/0741-3335/58/5/054001.
- Garcia, Odd Erik; Kube, Ralph; Theodorsen, Audun; Pecseli, Hans. Stochastic modelling of intermittent fluctuations in the scrape-off layer: Correlations, distributions, level crossings, and moment estimation. Physics of Plasmas 2016; Volum 23 (5). ISSN 1070-664X.s 1 - 14.s doi: 10.1063/1.4951016.
- Theodorsen, Audun; Garcia, Odd Erik; Horacek, Jan; Kube, Ralph; Pitts, RA. Scrape-off layer turbulence in TCV: Evidence in support of stochastic modelling. Plasma Physics and Controlled Fusion 2016; Volum 58 (4). ISSN 0741-3335.s 1 - 12.s doi: 10.1088/0741-3335/58/4/044006.
- Theodorsen, Audun; Garcia, Odd Erik. Level crossings, excess times, and transient plasma-wall interactions in fusion plasmas. Physics of Plasmas 2016; Volum 23 (4). ISSN 1070-664X.s 1 - 5.s doi: 10.1063/1.4947235.
Research interests
- Plasma physics, primarily in the context of nuclear fusion.
- Turbulence, turbulent transport and coherent fluctuations in complex, chaotic and self-organized systems.
- Stochastic modelling and time series analysis.
Teaching
I teach a special curriculum on stochastic modelling of complex systems if there are enough students. Please contact me if you are interested.
Past
- FYS-2009 Introduction to plasma physics (2018, 2020)
- FYS-1002 Electromagnetism (2019)
- FYS-2009 Introduction to plasma physics (exercises) (2019)