The spectral line asymmetry of the Doppler effect in relativistic plasmas

Autor:	Djamel-Eddine Zenkhri, Houria Guerrida, Mohammed Tayeb Meftah, Hadda Gossa, Bachir Amieur, Keltoum Chenini
Rok vydání:	2022
Předmět:	Physics symbols.namesake media_common.quotation_subject symbols General Physics and Astronomy Plasma Asymmetry Doppler effect Spectral line Computational physics media_common
Zdroj:	Europhysics Letters. 139:20001
ISSN:	1286-4854 0295-5075
DOI:	10.1209/0295-5075/ac3d6d
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4251acd5db2a85d616c85f6bd4f71bc5 https://doi.org/10.1209/0295-5075/ac3d6d Zobrazit plný text záznamu