نتایج جستجو برای: excited states
تعداد نتایج: 477079 فیلتر نتایج به سال:
We perform a theoretical investigation on the Goos-Häenchen shift (the lateral shift) in one-dimensional photonic crystals (1DPCs) containing left-handed (LH) metamaterials. The effect was studied by use of a Gaussian beam. We show that the giant lateral displacement is due to the localization of the electromagnetic wave which can be both positive and negative depending on the incidence angle o...
Excited states of the s, p, and d symmetries up to principal quantum number n = 4 are studied for the first eight members of Ne isoelectronic sequence (Ne to Cl) by the SAC-CI (symmetry-adaptedcluster configuration-interaction) method. The valence STO basis sets of Clementi et al. and the optimized excited STO are used by the STO-6G expansion method. The calculated transition energies agree wel...
Although there is no experimental data available for antihydrogen formation following antiprotons impact on positroium atoms, as a charge transfer reaction, at incident energies which are suitable for antimatter high-precision spectroscopic studies, measurements were carried out for its charge-conjugate reaction i. e. hydrogen formation, by protons impact on positronium. In this study, a two-st...
B. B. Skorodumov,1,* G. V. Rogachev,2 P. Boutachkov,1 A. Aprahamian,1 V. Z. Goldberg,3 A. Mukhamedzhanov,3 S. Almaraz,1 H. Amro,4 F. D. Becchetti,4 S. Brown,2,5 Y. Chen,4 H. Jiang,4 J. J. Kolata,1 L. O. Lamm,1 M. Quinn,1 and A. Woehr1 1Institute for Structure and Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556, USA 2Physics Department, Florida State University, Tallaha...
We identify the elementary normal modes of the collective motion of three electrons in intrashell triply excited states of atoms. By modelling the atom as consisting of three electrons on the surface of a sphere with the nucleus at the centre, we analysed the calculated wavefunctions in the body-fixed frame. Using contour surfaces in appropriate coordinates, the nodal surfaces and the normal mo...
The 1Lb and 1La excited states of naphthols are characterized by using time-dependent density functional theory (TDDFT), configuration interaction with singles (CIS), and equation-of-motion coupled cluster singles and doubles (EOM-CCSD) methods. TDDFT fails dramatically at predicting the energy and ordering of the 1La and 1Lb excited states as observed experimentally, while EOM-CCSD accurately ...
The photoisomerization dynamics of trans-stilbene have been well studied in the lowest excited state, but much less is known about the behavior following excitation to higher-lying electronically excited states. This contribution reports a combined study of the spectroscopy and dynamics of two-photon accessible states above S1. Two-photon absorption (2PA) measurements using a broadband pump-pro...
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