Energy Levels and Electric Dipole Transitions for Neutral Actinium (Z = 89)
Tóm tắt
We have reported a relativistic multiconfiguration Dirac-Fock calculation including Breit and quantum electrodynamic contributions on the level structure of atomic actinium, Ac I (Z = 89). The computations have been carried out for the low 45 even and 60 odd-parity levels, and the electric dipole transition parameters (wavelengths, oscillator strengths and transition probabilities) for some transitions between these levels. Comparison has been also made with other results in available literature.
Tài liệu tham khảo
Meggers W.F.: The spectrochemistry of actinium. Spectrochim. Acta 10, 195–200 (1957)
http://www.lac.u-psud.fr/Database/Contents.html
http://physics.nist.gov/PhysRefData/ASD/index.html
Judd B.R.: Low-lying levels in certain actinide atoms. Phys. Rev. 125, 613–625 (1962)
Nugent L.J., Vander Sluis K.L.: Theoretical treatment of the energy differences between f q d 1 s 2 and f q+1 s 2 electron configurations for lanthanide and actinide atomic vapors. J. Opt. Soc. Am. 61, 1112–1115 (1971)
Vander Sluis K.L., Nugent L.J.: Relative energies of the lowest levels of the f q ps 2, f q ds 2, and f q+1 s 2 electron configurations of the lanthanide and actinide neutral atoms. Phys. Rev. 6, 86–94 (1972)
Brewer L.: Energies of the electronic configurations of the lanthanide and actinide neutral atoms. J. Opt. Soc. Am. 61, 1101–1111 (1971)
Brewer L.: Energies of the electronic configurations of the singly, doubly and triply ionized lanthanides and actinides. J. Opt. Soc. Am. 61, 1666–1681 (1971)
Desclaux J.P.: Relativistic Dirac-Fock expectation values for atoms with Z = 1 to Z = 120. At. Data Nucl. Data Tables 12, 311–406 (1973)
Mann J.B.: SCF Hartree-Fock results for elements with two open shells and for the elements francium to nobelium. At. Data Nucl. Data Tables 12, 1–86 (1973)
Rajnak K., Shore B.W.: Regularities in s-electron binding energies in l N s M configurations. J. Opt. Soc. Am. 68, 360–367 (1978)
Köhler, S.; DeiBenberger, R.; Eberhardt, K.; Erdmann, N.; Herrmann, G.; Huber, G.; Kratz, J.V.; Nunnemann, M.; Passler, G.; Rao, P.M.; Riegel, J.; Trautmann, N.; Wendt, K.: Determination of the first ionization potential of actinide elements by resonance ionization mass spectroscopy. Spectrochim. Acta 52B, 717–726 (1997)
Eliav E., Shmulyian S., Kaldor U., Ishikawa Y.: Transition energies of lanthanum, actinium, and eka-actinium (element 121). J. Chem. Phys. 109, 3954–3958 (1998)
Seth M., Dyall K.G., Sherpard R., Wagner A.: The calculation of f–f spectra of lanthanide and actinide ions by the MCDF-CI method. J. Phys. B At. Mol. Opt. Phys. 34, 2383–2406 (2001)
Petrov A.N., Mosyagin N.S., Titov A.V., Tupitsyn I.I.: Accounting for the Breit interaction in relativistic effective core potential calculations of actinides. J. Phys. B At. Mol. Opt. Phys. 37, 4621–4637 (2004)
Sugar J.: Ionization energies of the neutral actinides. J. Chem. Phys. 59, 788–791 (1973)
Sugar J.: Revised ionization energies of the neutral actinides. J. Chem. Phys. 60, 4103 (1974)
Quinet P., Argante C., Fivet V., Terranova C., Yushchenko A.V., Biémont É.: Atomic data for radioactive elements Ra I, Ra II, Ac I and Ac II and application to their detection in HD101065 and HD 465. Astron. Astrophys. 474, 307–314 (2007)
Grant I.P.: Relativistic calculation of atomic structures. Adv. Phys. 19, 747–811 (1970)
Grant I.P., Quiney H.M.: Foundations of the relativistic theory of atomic and molecular structure. Adv. At. Mol. Phys. 23, 37–86 (1987)
Özdemir L., Ürer G.: Electric dipole transition parameters for low-lying levels for neutral actinium. Acta Phys. Pol. A 118(4), 563–569 (2010)
Ürer, G.; Özdemir, L.: Excitation energies and E1, E2, and M1 transition parameters for Ac III. Chin. J. Phys. (2011) (accepted)
Ürer, G.; Özdemir, L.: Energies and electric dipole transitions for low-lying levels of Pa IV and U V. Zeitschrift für Naturforschung A (2011). (accepted)
Karaçoban B., Özdemir L.: Electric dipole transitions for La I (Z = 57). J. Quant. Spectrosc. Radiat. Transf. 109, 1968–1985 (2008)
Karaçoban B., Özdemir L.: Energies and lifetimes for some excited levels in La I. Acta Phys. Pol. A 113(6), 1609–1618 (2008)
Karaçoban B., Özdemir L.: Energies and Landé factors for some excited levels in Lu I (Z = 71). Cent. Eur. J. Phys. 9(3), 800–806 (2011)
Karaçoban B., Özdemir L.: Electric dipole transitions for Lu I (Z = 71). Arab. J. Sci. Eng. A Sci. 36, 635–648 (2011)
Dyall K.G., Grant I.P., Johnson C.T., Parpia F.A., Plummer E.P.: GRASP: General-purpose relativistic atomic structure program. Comput. Phys. Commun. 55, 425–456 (1989)
Parpia F.A., Fischer C.F., Grant I.P.: GRASP92: a package for large-scale relativistic atomic structure calculations. Comput. Phys. Commun. 94, 249–271 (1996)
Parpia F.A., Fischer C.F., Grant I.P.: GRASP92: a package for large-scale relativistic atomic structure calculations. Comput. Phys. Commun. 175, 745–747 (2006)
Jönsson P., He X., Fischer C.F., Grant I.P.: The grasp2 K relativistic atomic structure package. Comput. Phys. Commun. 177, 597–622 (2007)
Desclaux J.P.: A multiconfiguration relativistic DIRAC-FOCK program. Comput. Phys. Commun. 9, 31–45 (1975)
Grant I.P.: Relativistic quantum theory of atoms and molecules. Springer, New York (2007)
Fritzche S., Dong C.Z., Koike F., Uvarov A.: The low-lying level structure of atomic lawrencium (Z = 103): energies and absorption rates. Eur. Phys. J. D 45, 107–113 (2007)
Gaigalas G., Gaidamauskas E., Rudzikas Z., Magnani N., Caciuffo R.: The role of atomic correlations in the theoretical study of minor actinide ions. J. Nucl. Mater. 285, 66–67 (2009)
Meggers W.F., Fred M., Tomkins F.S.: Emission Spectra of Actinium. J. Res. Natl. Bur. Stand. 58, 297–315 (1957)
Sansonetti J.E., Martin W.C.: Handbook of basic atomic spectroscopic data. J. Phys. Chem. Ref. Data 34, 1559–2259 (2005)