Atomic structure of the super-heavy element No I (Z=102)

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Yong Liu,^1,2 Roger Hutton,^1,2 and Yaming Zou^1,2
¹The Key Laboratory of Applied Ion Beam Physics, Shanghai Ministry of Education, Shanghai, People's Republic of China
²Shanghai EBIT Laboratory, Institute of Modern Physics, Fudan University, Shanghai, People's Republic of China

Received 8 October 2007; published 10 December 2007

Themulticonfiguration Dirac-Fock (MCDF) method was used to calculate the excitationenergies of the levels of ³P and ¹P in thelowest excited configurations for the two homolog elements of No Iand Yb I. Also the transition probability of the 7s7p ¹P₁ --> 7s² ¹S₀ transitionand the ground-state ionization energy of No I were calculated. Theresults for Yb I agree very well with the available experiments,with deviations of below 0.6% for the triplets and below4% for the singlet. The result for the No I excitationenergies clears the situation of conflicting results between Borschevsky et al.,30 056 cm⁻¹ (3.726 eV) [Phys. Rev. A 75, 042514 (2007)], andFritzsche, 3.36 eV [Eur. Phys. J. D 33, 15 (2005)]for the 7s7p ¹P₁ level, which is planned to be measuredin the near future with a newly developed experimental techniqueby Backe et al. [Eur. Phys. J. D 45, 99 (2007)].The ionization energy result obtained in this work, 53 701 cm⁻¹, isin excellent agreement with the scaled result of 53 600(600) cm⁻¹.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.76.062503
DOI:	10.1103/PhysRevA.76.062503
PACS:	32.30.-r; 31.15.Ar; 32.70.Cs; 32.10.Hq 32.30.-r Atomic spectra 31.15.Ar Ab initio calculations (atoms and molecules) 32.70.Cs Atomic oscillator strengths, lifetimes, transition moments 32.10.Hq Atomic ionization potentials, electron affinities YEAR: 2007
KEYWORDS:	atomic structure, Dirac-Fock calculations, ionisation potential, nobelium, radiative lifetimes, triplet state

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