Year: 2021
Type: article
Abstract: In this work, we present a comparative study between the relativistic and non-relativistic Doppler effects on spectral line profiles in ultra-hot plasmas in a laboratory system. We have established an exact formula of the relativistic Doppler profile in ultra-high-temperature plasma that is not a Gaussian one (unlike the non-relativistic Doppler profile that is Gaussian). We have also derived a new FWHM (Full Width at Half Maximum) formula of the corresponding profile that is different from the non-relativistic FWHM ( ). We have also shown that, in the relativistic case, Doppler broadening exhibits an asymmetry of spectral line profile (non-Gaussian profile). To ensure the validity of our investigation, we have compared our theoretical calculation with the experimental results and found a good agreement.
Source: Europhysics Letters (EPL)
Institutions: University of Ouargla, University of Ghardaia
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3215082607