منابع مشابه
Optical Absorption Spectra of Bipolarons
The absorption of large bipolarons is investigated using the path-integral method. The response of a bipolaron to an external electromagnetic field is derived in the framework of the memory function approach. The bipolaron optical absorption spectrum consists of a series of relatively narrow peaks. The peculiarities of the bipolaron optical absorption as a function of the frequency of the elect...
متن کاملSubstitution effects on the absorption spectra of nitrophenolate isomers.
Charge-transfer excitations highly depend on the electronic coupling between the donor and acceptor groups. Nitrophenolates are simple examples of charge-transfer systems where the degree of coupling differs between ortho, meta and para isomers. Here we report the absorption spectra of the isolated anions in vacuo to avoid the complications of solvent effects. Gas-phase action spectroscopy was ...
متن کاملOptical Excitation and Absorption Spectra of C 2 v and D 2 d Isomers of CO 4
Recently the CO4 isomer with C2v symmetry has been detected in an experiment [C. S. Jamieson et al., Chem. Phys. Lett. 440, 105 (2007)]. To further characterize this isomer, we report its optical excitation and absorption spectra calculated by the time-dependent density functional theory. Its rich spectral features are compared with those of another stable isomer having D2d symmetry. Their spec...
متن کاملElectronic spectra of C4H3Cl+ isomers
Two experimental methods were applied to identify the structure and electronic transitions of C4H3Cl þ isomers. The first is a direct absorption technique where mass-selected ions are embedded in 6K neon matrices using a mass-selected ion beam and absorption spectra of different C4H3Cl þ isomers were thus observed. The second is a gas phase method on ions which have been collisional cooled with...
متن کاملOptical absorption spectra of A6C60: Reduction of effective Coulomb interactions
Optical absorption spectra of C 60 are theoretically investigated in order to analyze the optical properties of alkali metal doped fullerites A6C60. We use a tight binding model with long ranged Coulomb interactions and bond disorder. Optical spectra are obtained by the Hartree-Fock approximation and the CI method. The Coulomb interaction parameters which are relevant to the optical spectra of ...
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ژورنال
عنوان ژورنال: The European Physical Journal D
سال: 2009
ISSN: 1434-6060,1434-6079
DOI: 10.1140/epjd/e2008-00244-6