Degree of accuracy in determining the nuclear electric quadrupole moment of radium

Jacek Bieron; Pekka Pyykkö

doi:10.1103/PhysRevA.71.032502

Degree of accuracy in determining the nuclear electric quadrupole moment of radium

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Abstract

The multiconfiguration Dirac-Hartree-Fock (MCDHF) model has been employed to calculate the atomic expectation values responsible for the hyperfine splittings of the 7s7p P-3(1,2) and P-1(1) levels of radium. Calculated electric field gradients, together with the experimental electric quadrupole hyperfine structure constants, allow us to extract a nuclear electric quadrupole moment Q(Ra-223) of 1.21(0.03) barn. This value is in good agreement with the semiempirical determination based on neutral radium hyperfine and fine structure, but differs from the latest result from an alkali-like radium ion.

Original language	English
Journal	Physical Review A (Atomic, Molecular and Optical Physics)
Volume	71
Issue number	3
Pages (from-to)	art. 032502
ISSN	1050-2947
DOIs	https://doi.org/10.1103/PhysRevA.71.032502
Publication status	Published - 2005
MoE publication type	A1 Journal article-refereed

Fields of Science

116 Chemical sciences

Access to Document

10.1103/PhysRevA.71.032502

Cite this

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title = "Degree of accuracy in determining the nuclear electric quadrupole moment of radium",

abstract = "The multiconfiguration Dirac-Hartree-Fock (MCDHF) model has been employed to calculate the atomic expectation values responsible for the hyperfine splittings of the 7s7p P-3(1,2) and P-1(1) levels of radium. Calculated electric field gradients, together with the experimental electric quadrupole hyperfine structure constants, allow us to extract a nuclear electric quadrupole moment Q(Ra-223) of 1.21(0.03) barn. This value is in good agreement with the semiempirical determination based on neutral radium hyperfine and fine structure, but differs from the latest result from an alkali-like radium ion.",

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AU - Bieron, Jacek

AU - Pyykkö, Pekka

PY - 2005

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N2 - The multiconfiguration Dirac-Hartree-Fock (MCDHF) model has been employed to calculate the atomic expectation values responsible for the hyperfine splittings of the 7s7p P-3(1,2) and P-1(1) levels of radium. Calculated electric field gradients, together with the experimental electric quadrupole hyperfine structure constants, allow us to extract a nuclear electric quadrupole moment Q(Ra-223) of 1.21(0.03) barn. This value is in good agreement with the semiempirical determination based on neutral radium hyperfine and fine structure, but differs from the latest result from an alkali-like radium ion.

AB - The multiconfiguration Dirac-Hartree-Fock (MCDHF) model has been employed to calculate the atomic expectation values responsible for the hyperfine splittings of the 7s7p P-3(1,2) and P-1(1) levels of radium. Calculated electric field gradients, together with the experimental electric quadrupole hyperfine structure constants, allow us to extract a nuclear electric quadrupole moment Q(Ra-223) of 1.21(0.03) barn. This value is in good agreement with the semiempirical determination based on neutral radium hyperfine and fine structure, but differs from the latest result from an alkali-like radium ion.

KW - 116 Chemical sciences

U2 - 10.1103/PhysRevA.71.032502

DO - 10.1103/PhysRevA.71.032502

M3 - Article

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

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