Fine structure of negative ions of alkaline-earth-metal atoms

V. A. Dzuba; V. V. Flambaum; G. F. Gribakin; D. P. Sushkov

doi:10.1103/PhysRevA.44.2823

Fine structure of negative ions of alkaline-earth-metal atoms

V. A. Dzuba^*, V. V. Flambaum, G. F. Gribakin, D. P. Sushkov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

Fine-structure intervals np_1/2-np_3/2 (np_1/2 is the ground state) are calculated for negative ions using relativistic many-body perturbation theory: Ca^- 4p, 56 cm^-1; Sr^- 5p, 178 cm^-1; Ba^- 6p, about 460 cm^-1; and Ra^- 7p, 1341 cm^-1. Comparison of the fine-structure interval with affinity: Ca^- 10%, Sr^- 22%, Ba^- 30%; for Ra^- the fine-structure interval is larger than the affinity. Thus the Ra^- 7p^3/2 state is a resonance in the continuous spectrum with energy 0.018 eV. This means that the relativistic spin-orbit interaction plays a determining role in slow electron-radium scattering.

Original language	English
Pages (from-to)	2823-2827
Number of pages	5
Journal	Physical Review A
Volume	44
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.44.2823
Publication status	Published - 01 Sep 1991
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1103/PhysRevA.44.2823

Cite this

@article{18f8f2fb34f24c6e9c9aa50da87d1ee4,

title = "Fine structure of negative ions of alkaline-earth-metal atoms",

abstract = "Fine-structure intervals np1/2-np3/2 (np1/2 is the ground state) are calculated for negative ions using relativistic many-body perturbation theory: Ca- 4p, 56 cm-1; Sr- 5p, 178 cm-1; Ba- 6p, about 460 cm-1; and Ra- 7p, 1341 cm-1. Comparison of the fine-structure interval with affinity: Ca- 10%, Sr- 22%, Ba- 30%; for Ra- the fine-structure interval is larger than the affinity. Thus the Ra- 7p3/2 state is a resonance in the continuous spectrum with energy 0.018 eV. This means that the relativistic spin-orbit interaction plays a determining role in slow electron-radium scattering.",

author = "Dzuba, {V. A.} and Flambaum, {V. V.} and Gribakin, {G. F.} and Sushkov, {D. P.}",

year = "1991",

month = sep,

day = "1",

doi = "10.1103/PhysRevA.44.2823",

language = "English",

volume = "44",

pages = "2823--2827",

journal = "Physical Review A (Atomic, Molecular, and Optical Physics)",

issn = "1050-2947",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Fine structure of negative ions of alkaline-earth-metal atoms

AU - Dzuba, V. A.

AU - Flambaum, V. V.

AU - Gribakin, G. F.

AU - Sushkov, D. P.

PY - 1991/9/1

Y1 - 1991/9/1

N2 - Fine-structure intervals np1/2-np3/2 (np1/2 is the ground state) are calculated for negative ions using relativistic many-body perturbation theory: Ca- 4p, 56 cm-1; Sr- 5p, 178 cm-1; Ba- 6p, about 460 cm-1; and Ra- 7p, 1341 cm-1. Comparison of the fine-structure interval with affinity: Ca- 10%, Sr- 22%, Ba- 30%; for Ra- the fine-structure interval is larger than the affinity. Thus the Ra- 7p3/2 state is a resonance in the continuous spectrum with energy 0.018 eV. This means that the relativistic spin-orbit interaction plays a determining role in slow electron-radium scattering.

AB - Fine-structure intervals np1/2-np3/2 (np1/2 is the ground state) are calculated for negative ions using relativistic many-body perturbation theory: Ca- 4p, 56 cm-1; Sr- 5p, 178 cm-1; Ba- 6p, about 460 cm-1; and Ra- 7p, 1341 cm-1. Comparison of the fine-structure interval with affinity: Ca- 10%, Sr- 22%, Ba- 30%; for Ra- the fine-structure interval is larger than the affinity. Thus the Ra- 7p3/2 state is a resonance in the continuous spectrum with energy 0.018 eV. This means that the relativistic spin-orbit interaction plays a determining role in slow electron-radium scattering.

UR - http://www.scopus.com/inward/record.url?scp=0038566124&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.44.2823

DO - 10.1103/PhysRevA.44.2823

M3 - Article

AN - SCOPUS:0038566124

VL - 44

SP - 2823

EP - 2827

JO - Physical Review A (Atomic, Molecular, and Optical Physics)

JF - Physical Review A (Atomic, Molecular, and Optical Physics)

SN - 1050-2947

IS - 5

ER -

Fine structure of negative ions of alkaline-earth-metal atoms

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this