Optical emission spectroscopy is a passive diagnostic technique, which does not perturb the plasma state. In particular, in a hydrogen plasma, Balmer-alpha (Hα) emission can be easily measured in the visible range along a line of sight from outside the plasma vessel. Other emission lines in the visible spectral range from hydrogen atoms and molecules can be exploited too, in order to gather complementary pieces of information on the plasma state. Tomography allows us to capture bi-dimensional structures. We propose to adopt an emission spectroscopy tomography for studying the transverse profiles of magnetized plasmas when Abel inversion is not exploitable. An experimental campaign was carried out at the Thorello device, a simple magnetized torus. The characteristics of the profile extraction method, which we implemented for this purpose are discussed, together with a few results concerning the plasma profiles in a simply magnetized torus configuration

Barni, R., Caldirola, S., Fattorini, L., Riccardi, C. (2018). Tomography of a simply magnetized toroidal plasma. PLASMA SCIENCE & TECHNOLOGY, 20(2) [10.1088/2058-6272/aa9028].

Tomography of a simply magnetized toroidal plasma

Barni, R;Caldirola, S;Fattorini, L;Riccardi, C
2018

Abstract

Optical emission spectroscopy is a passive diagnostic technique, which does not perturb the plasma state. In particular, in a hydrogen plasma, Balmer-alpha (Hα) emission can be easily measured in the visible range along a line of sight from outside the plasma vessel. Other emission lines in the visible spectral range from hydrogen atoms and molecules can be exploited too, in order to gather complementary pieces of information on the plasma state. Tomography allows us to capture bi-dimensional structures. We propose to adopt an emission spectroscopy tomography for studying the transverse profiles of magnetized plasmas when Abel inversion is not exploitable. An experimental campaign was carried out at the Thorello device, a simple magnetized torus. The characteristics of the profile extraction method, which we implemented for this purpose are discussed, together with a few results concerning the plasma profiles in a simply magnetized torus configuration
Articolo in rivista - Articolo scientifico
magnetized plasma; optical emission spectroscopy; plasma diagnostics; simply magnetized torus; Condensed Matter Physics
English
2018
20
2
025102
none
Barni, R., Caldirola, S., Fattorini, L., Riccardi, C. (2018). Tomography of a simply magnetized toroidal plasma. PLASMA SCIENCE & TECHNOLOGY, 20(2) [10.1088/2058-6272/aa9028].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/183167
Citazioni
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
Social impact