Zeitschrift für Physik D Atoms, Molecules and Clusters

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Time and spectrally resolved fluorescence of Cl*2 and ArCl* in Cl2 doped Ar Under state selective pulsed photoexcitation with synchrotron radiation
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 4 - Trang 73-87 - 1986
T. Möller, B. Jordan, G. Zimmerer, D. Haaks, J. Le Calvé, M. -C. Castex
Synchrotron Radiation is used to selectively excite chlorine and Cl2 doped argon in the VUV region. Stationary fluorescence and excitation spectra of the 11Σ + , 21Σ + and 23Πg Cl 2 ...... hiện toàn bộ
Quantal close-coupling calculation of the cross sections for the j 1 m 1 → j 2 m 2 transitions in the 4p 2P and 3d 2D excited states of Ca+ induced by collisions with helium
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 41 - Trang 87-94 - 2014
E. Paul-Kwiek, E. Czuchaj
Cross sections for the j 1 m 1 → j 2 m 2 transitions in the resonance 4p 2P and metastable 3d 2D states of the singly charged calcium ion induced by collisions with the ground-state He atom have been calculated using the quantal close-coupling method. The calculations are...... hiện toàn bộ
Hyperfine structure of atoms in combined external fields
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 24 - Trang 203-210 - 1992
M. Musso
In order to interpret experimental hyperfine spectra of the resonance lines of the alkali atoms in presence of external electric and magnetic fields in arbitrary direction relative to each other a computer programme has been developed which computes the splitting of hyperfine components of spectral lines and their expected relative transition probabilities. The computed data can be directly compar...... hiện toàn bộ
A method to determineL-subshell ionization cross sections for medium and heavy elements
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 3 - Trang 379-389 - 1986
S. Reusch, H. Genz, W. Löw, A. Richter
We have developed a method to determineL-subshell ionization cross sections and report here on the first measurements of electron inducedL-subshell cross sections for target elements (29≦Z≦79) at electron bombarding energies between 50≦E 0≦200 keV. The method involves the detection of characteristic X rays by means of a high resolution flat crystal spectrometer of known reflectivity and is based o...... hiện toàn bộ
Structure of the electron momentum density of atomic systems
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 42 - Trang 251-257 - 2014
E. Romera, Toshikatsu Koga, J. S. Dehesa
The present paper addresses the controversial problem on the nonmonotonic behavior of the spherically-averaged momentum density γ(p) observed previously for some ground-state atoms based on the Roothaan-Hartree-Fock (RHF) wave functions of Clementi and Roetti. Highly accurate RHF wave functions of Koga et al. are used to study the existence of extrema in the momentum density γ(p) of all the neutra...... hiện toàn bộ
Electronic structures of mercury clusters
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 26 - Trang 143-145 - 1993
S. Ohnishi, Y. Ishii
Electronic structures of mercury clusters are studied by the self-consistent calculations. It is found that an icosahedral Hg13 cluster is characterized by the atomic nature with closed electronic shell configuration while a significant amount of thespd-hybridization is observed for a Hg19 cluster with a double-icosahedral shape. The electronic structure of a Hg12Ag cluster is also studied with a ...... hiện toàn bộ
Collisional electron emission at solid surfaces induced by mass selected negative cluster ions
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 20 - Trang 141-143 - 1991
H. Shiromaru, T. Moriwaki, C. Kittaka, Y. Achiba
Electron emission efficiency induced by the collision of clusters with a solid surface was measured as a function of cluster size. Emitted electron energy distribution for the impact of mass selected negative ion clusters or mass selected neutral clusters was also measured in the energy region of 0–5 eV. The difference in the shape of the electron spectra was observed depending on the size and cha...... hiện toàn bộ
The yields of1 P and1 D resonances in the He(e, 2e)He+ reaction
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 27 - Trang 259-262 - 1993
O. Lhagva, R. Badamdamdin, S. I. Strakhova, L. Hehnmedeh
In the first Born approximation the dependence of the yields of the1 P and1 D resonances in the He(e, 2e)He+ reaction on the momentum transfer in the recoil peak region at incident energiesE 0=1000 eV is studied. It is shown that in a certain range of the ejection angle and for the large momentum transfer the yield of the1 D resonance dominates over the1 P resonance one.
Infrared multiphoton excitation of refractory metal clusters
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 26 - Trang 153-155 - 1993
K. Athanassenas, T. Leisner, U. Frenzel, D. Kreisle, E. Recknagel
Photoexcitation and photoionization experiments on small Tungsten and Niobium clusters were performed with a Q-switched Nd:YAG laser (1064 nm) and a reflectron type time-of-flight mass spectrometer. For low laser fluences the monomer and very small clusters do not show up in the mass spectra. Furthermore, the detected cluster ions show very asymmetric peak shapes caused by delayed ionization (ther...... hiện toàn bộ
Asymmetry of bremsstrahlung from polarized electrons
Zeitschrift für Physik D Atoms, Molecules and Clusters - Tập 37 - Trang 9-14 - 2014
E. Haug
The triply differential cross section of unpolarized bremsstrahlung produced by polarized electrons in the Coulomb field of a nucleus is calculated with the aid of Sommerfeld-Maue wave functions. The photon asymmetry originating from transversely polarized electrons is calculated for various values of energies and angles, in particular for the parameters of recent experiments. As a function of the...... hiện toàn bộ
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