Lithuanian Journal of Physics article / Lietuvos fizikos žurnalo straipsnis

RADIATIVE TRANSITIONS FOR THREE LOWEST CONFIGURATIONS OF TUNGSTEN IONS W³⁸⁺–W⁴³⁺
Rasa Karpuškienė, |Pavel Bogdanovich|, and Romualdas Kisielius
Institute of Theoretical Physics and Astronomy, Vilnius University, Saulėtekio 3, LT-10257 Vilnius, Lithuania
E-mail: rasa.karpuskiene@tfai.vu.lt

Received 4 April 2017; revised 18 May 2017; accepted 15 June 2017

The ab initio quasirelativistic approximation was used to derive transition data for the multicharged tungsten ions W³⁸⁺–W⁴³⁺ with an open 4p shell. The configuration interaction method with transformed radial orbitals was applied to include electron correlation effects. The relativistic effects were taken into account in the Breit–Pauli approximation for the quasirelativistic Hartree–Fock radial orbitals. The level energies E, radiative lifetimes τ, and Landé g-factors were calculated for the 4s²4p^N, 4s²4p^N–14d, and 4s4p^N+1 configurations of six tungsten ions. The radiative transition wavelengths λ, spontaneous emission transition probabilities A and their uncertainties for the electric dipole, electric quadrupole, electric octupole, magnetic dipole and magnetic quadrupole transitions among the levels of these configurations are presented.

Keywords: tungsten, level energies, radiative rates, Landé g-factors, lifetimes
PACS: 31.10.+Z, 31.15.ag, 32.70.Cs

NAUJOS HARMONINIO OSCILIATORIAUS BAZĖS TAIKYMO GALIMYBĖS, SKAIČIUOJANT KULONINĖS TRIJŲ NETAPATINGŲ DALELIŲ SISTEMOS PAGRINDINĖS BŪSENOS ENERGIJĄ

Rasa Karpuškienė, |Pavelas Bogdanovičius|, Romualdas Kisielius
Vilniaus universiteto Teorinės fizikos ir astronomijos institutas, Vilnius, Lietuva

Kvazireliatyvistinis Hartrio ir Foko artinys panaudotas tiriant radiacinių šuolių savybes volframo jonuose W³⁸⁺–W⁴³⁺ su atviru 4p sluoksniu. Konfigūracijų sąveikos artėjimas pritaikytas koreliaciniams efektams įskaityti naudojant transformuotųjų radialiųjų orbitalių bazę. Darbe pateikiamos konfigūracijų 4s²4p^N, 4s²4p^N-14d ir 4s4p^N+1 lygmenų energijos, jų radiacinės gyvavimo trukmės τ, Landé g-daugikliai bei įvairių tipų (E1, E2, E3, M1 ir M2) savaiminių šuolių bangų ilgiai ir emisijos šuolių tikimybės. Gautos šuolių charakteristikos palygintos su eksperimentiniais ir kitų autorių teoriniais duomenimis. Kartu pateikiami teorinių bangų ilgių neapibrėžtumai ir iš jų kylantys šuolių tikimybių neapibrėžtumai.

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