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Spectral lines behavior of Be I and Na I isoelectronic sequence in Debye plasma environment

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dc.contributor.author Chaudhuri, R. K
dc.contributor.author Chattopadhyay, S
dc.contributor.author Mahapatra, U. S
dc.date.accessioned 2012-09-24T12:09:10Z
dc.date.available 2012-09-24T12:09:10Z
dc.date.issued 2012-08
dc.identifier.citation Physics of Plasmas, Vol. 19, No. 8, pp. 082701-1 - 082701-7 en
dc.identifier.issn 1070-664X
dc.identifier.uri http://hdl.handle.net/2248/5906
dc.description Restricted Access en
dc.description.abstract We report the plasma screening effect on the first ionization potential (IP) and [He]2s/sup2/ (/sup1/S/sup0/)→[He]2s2p/2s3p allowed (/sup1/P/sub1/) and inter-combination transitions (/sup3/P/sub1/) in some selected Be-like ions. In addition, we investigate the spectral properties of [Ne]3s (/sup2/S/sub1/2/)→[Ne]np (/sup2P/sub1/2/ and /sup2/P/sub3/2/ for n = 3, 4) transitions in Ca X and Fe XVI ions (Na I isoelectronic sequence) and [He]3s(/sup2/S/sub1/2/)→[He]np (/sup2/P/sub1/2 and /sup2/P/sub3/2/ for n = 2, 3) transitions in Li, B II, and N IV (Li I isoelectronic sequence) under plasma environment. The state-of-the-art relativistic coupled cluster calculations using the Debye model of plasma for electron-nucleus interaction show that (a) the ionization potential decreases sharply with increasing plasma strength and (b) the gap between the [He]2s2 (/sup1/S/sub0/)→[He]2s2p(/sup1,3/P/sup1/) energy levels increases with increasing plasma potential and nuclear charge. It is found that the [He]2s/sup2/ (/sup1/S/sub0/)→2s3p (/sup1,3/P/sub1/) transition energy decreases uniformly with increasing plasma potential and nuclear charge. In other words, the spectral lines associated with 2s-2p (i.e., Δn = 0, where n corresponds to principle quantum number) transitions in Be I isoelectronic sequence exhibit a blue-shift (except for Be I, B II, and the lowest inter-combination line in C III, which exhibit a red-shift), whereas those associated with 2s-3p (i.e., Δn ≠ 0) transitions are red-shifted. Similar trend is observed in Li I and Na I isoelectronic sequences, where spectral lines associated with Δn = 0 (Δn ≠ 0) are blue-shifted (red-shifted). The effect of Coulomb screening on the spectral lines of ions subjected to plasma is also addressed. en
dc.language.iso en en
dc.publisher American Institute of Physics en
dc.relation.uri http://dx.doi.org/10.1063/1.4742177 en
dc.rights © American Institute of Physics en
dc.subject Beryllium en
dc.subject Boron en
dc.subject Calcium en
dc.subject Carbon en
dc.subject Coupled cluster calculations en
dc.subject Excited states en
dc.subject Helium neutral atoms en
dc.subject Ionisation potential en
dc.subject Iron en
dc.subject Isoelectronic series en
dc.subject Lithium en
dc.subject Neon en
dc.subject Nitrogen en
dc.subject Nuclear charge en
dc.subject Oxygen en
dc.subject Potassium en
dc.subject Red Shift en
dc.subject Relativistic Corrections en
dc.subject Relativistic Plasmas en
dc.subject Shielding en
dc.subject Silicon en
dc.subject Sodium en
dc.subject Sulphur en
dc.title Spectral lines behavior of Be I and Na I isoelectronic sequence in Debye plasma environment en
dc.type Article en

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