NON-TYPICAL SPECTRAL LINE SHAPES FROM LABORATORY PLASMA OF INTEREST FOR ASTROPHYSICS
Nikola Cvetanović, Bratislav M. Obradović.
Publication
BOOK OF ABSTRACTS AND CONTRIBUTED PAPERS - International scientific conference: Meeting on new trends in Astronomy & Earth Observation, Page 47, https://doi.org/10.69646/aob241215
BOOK OF ABSTRACTS AND CONTRIBUTED PAPERS - International scientific conference: Meeting on new trends in Astronomy & Earth Observation, November 25-29, 2024, Belgrade, Serbia, Edited by Vladimir A. Srećković, Aleksandra Kolarski, Milica Langović, Filip Arnaut and Nikola Veselinović
Published by: Scientific Society Isaac Newton Belgrade
Published: 15. 12. 2024.
Abstract
Abstract: Spectral line shapes are a powerful diagnostic tool for investigating both laboratory and astrophysical plasma. Typical applications include determination of plasma parameters and the strength of the electric or magnetic field. However, in certain cases atypical line shapes occur that cannot be explained using standard models for the line-profile analysis e.g. Doppler or pressure line broadening. To perform the line analysis in such cases, new and advanced fitting procedures must be developed, often paired with imaging and backed up by wider theoretical framework to take in to account the specific processes at play. The physical mechanisms that cause such line-shape effects in laboratory plasma are often similar or analogous to those in astrophysical plasma. Therefore, the methods can be seen as a link between the laboratory plasma formed in controlled experiments and the investigation of astrophysical objects. - FULL TEXT available in PDF.