Polarization of M 2 Line Emitted Following Electron-Impact Excitation of Beryllium-Like Ions

Autor:	Z. W. Wu, Ying-Long Shi, Stephan Fritzsche, Chenzhong Dong, Xiao-Yun Ma, L Y Xie
Rok vydání:	2013
Předmět:	Physics Linear polarization General Physics and Astronomy chemistry.chemical_element Polarization (waves) Ion chemistry Excited state Physics::Atomic Physics Atomic number Atomic physics Beryllium Ground state Excitation
Zdroj:	Chinese Physics Letters. 30:063401
ISSN:	1741-3540 0256-307X
DOI:	10.1088/0256-307x/30/6/063401
Popis:	Detailed calculations are carried out for the electron-impact excitation cross sections from the ground state to the individual magnetic sublevels of the 1s2s22p3/2J = 2 excited state of highly-charged beryllium-like ions by using a fully relativistic distorted-wave (RDW) method. The contributions of the Breit interaction to the linear polarization of the 1s2s22p3/2 J = 2 →1s22s2 J = 0 magnetic quadrupole (M2) line are investigated systematically for the beryllium isoelectronic sequence with 42 ≤ Z ≤ 92. It is found that the Breit interaction depolarizes significantly the linear polarization of the M2 fluorescence radiation and that these depolarization effects increase as the incident electron energy and/or the atomic number is enlarged.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3039d152f0bdd141407cc2a949fa28a8 https://doi.org/10.1088/0256-307x/30/6/063401 Zobrazit plný text záznamu