The structure and radiative lifetimes of negative ions homologous to N^{}
(2019) In Journal of Physics B: Atomic, Molecular and Optical Physics 52(12). p.111 Abstract
Negative ions homologous to N^{} are interesting systems, since there are several bound terms within the ground configuration. The forbidden transitions between them, often dominated by the magnetic dipole contributions, are affected by term mixing  a relativistic effect. When increasing the nuclear charge in the homologous sequence of negative ions, this effect increases. In this paper we use systematic multiconfiguration DiracHartreeFock calculations to study these effects and predict affinities, level splittings and transition rates between bound states of N^{}, P^{}, As^{}, Sb^{} and Bi^{}. By monitoring the line strengths we are able to predict the deviation from the... (More)
Negative ions homologous to N^{} are interesting systems, since there are several bound terms within the ground configuration. The forbidden transitions between them, often dominated by the magnetic dipole contributions, are affected by term mixing  a relativistic effect. When increasing the nuclear charge in the homologous sequence of negative ions, this effect increases. In this paper we use systematic multiconfiguration DiracHartreeFock calculations to study these effects and predict affinities, level splittings and transition rates between bound states of N^{}, P^{}, As^{}, Sb^{} and Bi^{}. By monitoring the line strengths we are able to predict the deviation from the nonrelativistic LScoupled values for transitions between levels of the lowest ^{3}P term. For Sb^{} the ^{1}D term is also bound, and the prediction for the rates of its transition to the ^{3}Plevels is a challenge for theory. For Bi^{} less is known experimentally and we analyze its structure and the relativistic contributions to it.
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 author
 Su, Yangluojia ; Si, Ran ^{LU} ; Yao, Ke and Brage, Tomas ^{LU}
 organization
 publishing date
 20190528
 type
 Contribution to journal
 publication status
 published
 subject
 keywords
 atomic structure, bound states, electron affinity, forbidden transitions, lifetimes, negative ions
 in
 Journal of Physics B: Atomic, Molecular and Optical Physics
 volume
 52
 issue
 12
 article number
 125002
 pages
 11 pages
 publisher
 IOP Publishing
 external identifiers

 scopus:85068607582
 ISSN
 09534075
 DOI
 10.1088/13616455/ab19e3
 language
 English
 LU publication?
 yes
 id
 d722c0de47d344adb1ba8af4556d447b
 date added to LUP
 20190717 15:44:40
 date last changed
 20200113 02:14:14
@article{d722c0de47d344adb1ba8af4556d447b, abstract = {<p>Negative ions homologous to N<sup></sup> are interesting systems, since there are several bound terms within the ground configuration. The forbidden transitions between them, often dominated by the magnetic dipole contributions, are affected by term mixing  a relativistic effect. When increasing the nuclear charge in the homologous sequence of negative ions, this effect increases. In this paper we use systematic multiconfiguration DiracHartreeFock calculations to study these effects and predict affinities, level splittings and transition rates between bound states of N<sup></sup>, P<sup></sup>, As<sup></sup>, Sb<sup></sup> and Bi<sup></sup>. By monitoring the line strengths we are able to predict the deviation from the nonrelativistic LScoupled values for transitions between levels of the lowest <sup>3</sup>P term. For Sb<sup></sup> the <sup>1</sup>D term is also bound, and the prediction for the rates of its transition to the <sup>3</sup>Plevels is a challenge for theory. For Bi<sup></sup> less is known experimentally and we analyze its structure and the relativistic contributions to it.</p>}, author = {Su, Yangluojia and Si, Ran and Yao, Ke and Brage, Tomas}, issn = {09534075}, language = {eng}, month = {05}, number = {12}, pages = {111}, publisher = {IOP Publishing}, series = {Journal of Physics B: Atomic, Molecular and Optical Physics}, title = {The structure and radiative lifetimes of negative ions homologous to N<sup></sup>}, url = {http://dx.doi.org/10.1088/13616455/ab19e3}, doi = {10.1088/13616455/ab19e3}, volume = {52}, year = {2019}, }