Publication

Collisional-radiative modeling and ultrafast laser-induced fluorescence in a helicon plasma device

2025

Abstract

The Thesis is aimed at developing spectroscopic diagnostics in order to further our understanding of the dynamics of neutral particles in plasmas relevant to fusion applications. Experimental efforts will be devoted to implementing Laser-Induced Fluorescence (LIF) diagnostics on both hydrogen and helium plasmas. These will be complemented by numerical studies through the development of a Collisional-Radiative Model for He plasmas. The experiments will be carried out on the Resonant Antenna Ion Device (RAID), a helicon plasma source located at the Swiss Plasma Center. The plasma conditions produced in RAID are similar to those expected in tokamak divertors, with the advantage of steady-state operation and ease of access of an array of diagnostics.

Official source

https://infoscience.epfl.ch/entities/publication/6874d31e-c4e8-4f21-acaa-fc612c6f6087

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6874d31e-c4e8-4f21-acaa-fc612c6f6087

About this result

Related concepts (32)

Tokamak

A tokamak (ˈtoʊkəmæk; токамáк) is a device which uses a powerful magnetic field to confine plasma in the shape of a torus. The tokamak is one of several types of magnetic confinement devices being developed to produce controlled thermonuclear fusion power. , it was the leading candidate for a practical fusion reactor. Tokamaks were initially conceptualized in the 1950s by Soviet physicists Igor Tamm and Andrei Sakharov, inspired by a letter by Oleg Lavrentiev. The first working tokamak was attributed to the work of Natan Yavlinsky on the T-1 in 1958.

Plasma (physics)

Plasma () is one of four fundamental states of matter, characterized by the presence of a significant portion of charged particles in any combination of ions or electrons. It is the most abundant form of ordinary matter in the universe, being mostly associated with stars, including the Sun. Extending to the rarefied intracluster medium and possibly to intergalactic regions, plasma can be artificially generated by heating a neutral gas or subjecting it to a strong electromagnetic field.

Magnetic confinement fusion

Magnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine fusion fuel in the form of a plasma. Magnetic confinement is one of two major branches of fusion energy research, along with inertial confinement fusion. The magnetic approach began in the 1940s and absorbed the majority of subsequent development. Fusion reactions combine light atomic nuclei such as hydrogen to form heavier ones such as helium, producing energy.

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Collisional-radiative modeling and ultrafast laser-induced fluorescence in a helicon plasma device

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