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1. Stark effect in odd-parity J = 1 levels of neutral barium

   Stark splitting of the barium 6 snp ¹ P ₁ states with principal quantum numbers ranging from 8 to 15 and of the 5 d 7 p ¹ P ₁ perturber level was...

   R.-H. Rinkleff, R. Wehmschulte in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

2. Accurate ab initio determination of the van der Waals interaction in the X ²Σ⁺ ground state of LiHe

   Accurate quantum-chemical ab initio calculations have been performed at the SCF and CEPA (coupled electron pair approximation) levels for the van der...

   Volker Staemmler in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

3. Ground state correlations of jellium metal clusters in local spin-density approximation

   The role of S = 1 excitations on the ground state of jellium clusters is analyzed within the randomphase approximation (RPA). The importance of the...

   F. Catara, Ll. Serra, N. Van Giai in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

4. Valence force field model for graphene and fullerenes

   We present two Valence Force Field models for sp ² bonded carbon sheets with three and five parameters adjusted to the phonon frequencies of...

   Carlos Lobo, José Luís in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

5. Pauling’s resonating valence bond theory of metals: some studies on lithium clusters

   We report for the first time fully ab initio valence bond (VB) calculations with explicit use of the unsynchronized resonance structures introduced...

   J.R. Mohallem, R.O. Vianna, ... R. McWeeny in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

6. Relativistic K shell ionisation of heavy atoms by electron impact: use of a relativistic helium-like bound state wave function

   The effect of the correlation between the two K shell electrons on the relativistic triple differential cross section of the simple K shell...

   B. Joulakian, A. El Messaoudi in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

7. Fine-structure analysis of the (5d+6s)⁵ levels of Ta I

   The fine structure of the prominent even levels of the neutral tantalum atom has been analyzed by simultaneous parametrization of one- and two-body...

   J. Dembczyński, B. Arcimowicz, ... L. Windholz in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

8. Interference effects in Stark spectra of weakly autoionising 5dnf states of barium

   Weakly autoionising 5 d _3/2 nf Rydberg states of barium around n = 60 have been studied in the presence of a static electric field. The experiment has...

   G.J. Kuik, W. Vassen, ... W. Hogervorst in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

9. Adiabatic population transfer by acoustooptically modulated laser beams

   We demonstrate coherent two-photon optical population transfer ( STIRAP , J. Chem. Phys. 92 , 5363 (1990)) between electronic states of atoms by use of...

   A. Lindinger, M. Verbeek, H.-G. Rubahn in Zeitschrift für Physik D Atoms, Molecules and Clusters

   Article 01 June 1997

10. The Lamb shift of excited S-levels in hydrogen and deuterium atoms

    A specific combination of s -state Lamb shift Δ E _L (1 s _1/2 )- n ³ Δ E _L ( ns _1/2 ) is considered. Its value is calculated both in the hydrogen and deuterium...

    Savely G. Karshenboim in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

11. Total cross sections of electron collisions with S atoms; H₂S, OCS and SO₂ molecules (Ei ≥ 50 eV)

    Collisions of intermediate to high energy electrons are considered with S-atoms as well as H ₂ S, OCS and SO ₂ molecules as targets. We employ e ^- atom...

    K. N. Joshipura, Minaxi Vinodkumar in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

12. Measurement of dispersive properties in atomic sodium with an improved Mach-Zehnder interferometer

    We report the experimental results of the absorption spectra and the dispersive properties of atomic sodium in the vicinity of 589.0 nm when an...

    Han-Zhuang Zhang, **u-Zhen Guo, ... Guang-Xu ** in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

13. Study of the hyperfine structure of Titanium atom by laser induced fluorescence on an atomic beam

    Within the framework of systematic hyperfine structure (hfs) investigation of titanium atom the hfs splitting of 3 d ³ 4 s ³ H _4,5,6 levels for two stable...

    A. Krzykowski, E. Stachowska, ... D. Stefańska in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

14. Laser-Rf double-resonance measurements of the metastable 3d ³4s ⁵P_1,2,3, 3d ²4s ^{2 1} G ₄ states of ⁴⁷Ti

    The hyperfine structure (hfs) of 4 metastable states of ⁴⁷ Ti has been measured very precisely by a laser-rf double resonance method. The...

    E. Stachowska, M. Fabiszisky in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

15. Calculation of avoided crossings for highly excited Stark states of Rb

    Using the method of diagonalization, in which zero-field wavefunctions from a potential model are chosen as a basis, we calculate positions and...

    Yong Li, Baiwen Li in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

16. Spectroscopic properties of the Ar ₂ ^* (5p) excimer states

    The transitions between Ar ₂ ^* (5p) and Ar ₂ ^* (4s Σ _u ) have been investigated by absorption spectrometry. The fine structure of the Ar ...

    T. Kunz, S. Neeser, H. Langhoff in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

17. Doubly charged sodium clusters: plasmon response and photoproduction

    The optical response of doubly charged sodium clusters Na _{n +2} ⁺⁺ was measured for n = 20, 40, and 58 valence electrons, for which the jellium model...

    Christina Schmitt, Christoph Ellert, ... Hellmut Haberland in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

18. An efficient and robust integration scheme for the equations of motion of the multiconfiguration time-dependent Hartree (MCTDH) method

    An efficient and robust integration scheme tailored to the equations of motion of the multiconfiguration time-dependent Hartree (MCTDH) method is...

    M.H. Beck, H.-D. Meyer in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

19. Radiative neutralization of small clusters im**ing on solid surfaces

    Light emission during the interaction of slow singly-charged clusters with solid surfaces is studied theoretically. More precisely, we consider...

    N. Lorente, R. Monreal, ... P. Apell in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997

20. Term isotope shift of high lying odd and even energy levels of Nd II

    The isotope shifts of the odd and even parity energy levels of singly-ionised neodymium (Nd II) have been evaluated using the measurements carried...

    S. G. Nakhate, S. M. Afzal, S. A. Ahmad in Zeitschrift für Physik D Atoms, Molecules and Clusters

    Article 01 June 1997