Results 11 to 20 of about 38,282 (168)

Use of the group theory for classification of electronic states of acetylene [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The electronic states of the acetylene molecule are classified employing the group theory combined with the use of the Walsh diagrams and some elementary quantum chemical considerations.
MILJENKO PERIC, STANKA JEROSIMIC
doaj   +3 more sources

Ab initio Calculations of Lepton-Nucleus Scattering

open access: yesFrontiers in Physics, 2020
The advent of high precision measurements of neutrinos and their oscillations calls for accurate predictions of their interactions with nuclear targets utilized in the detectors.
Noemi Rocco, Noemi Rocco
doaj   +1 more source

Ab initio Gamow shell-model calculations for dripline nuclei

open access: yesHe jishu, 2023
We developed a Gamow shell model based on first principles and successfully applied it to the nuclei around driplines. Herein, we review the theoretical and technical developments of this method. Starting from the realistic nuclear forces, the model uses
ZHANG Shuang, GENG Yifang, XU Furong
doaj   +1 more source

Ab initio calculation of 7Li photodisintegration [PDF]

open access: yesPhysics Letters B, 2004
11 pages with 3 ...
Bacca, Sonia   +4 more
openaire   +2 more sources

Ab-Initio Calculations [PDF]

open access: yes, 2017
Due to the difficulties found in the direct solution of the Schrodinger equation, different simplified approaches were proposed and are nowadays widely used. Among them, those most usually employed are the Hartree–Fock and the Density Functional Theory, which we revisit in the present chapter.
Chinesta, Francisco   +1 more
openaire   +3 more sources

Ab initio calculations of dilithiopropenes [PDF]

open access: yesProceedings of the National Academy of Sciences, 1982
Ab initio molecular orbital calculations with the 3-21G basis set show the most stable dilithiopropene structure to be the di-π lithium-bridged structure VI of 1,3-dilithiopropene. This structure is most simply regarded as an ion triplet of two lithium cations and a propenylidene dianion.
D, Kost   +3 more
openaire   +2 more sources

Ab InitioCalculation of Molecular Diffraction [PDF]

open access: yesJournal of Chemical Theory and Computation, 2014
We discuss the application of ab initio X-ray diffraction (AIXRD) to the interpretation of time-resolved and static X-ray diffraction. In our approach, elastic X-ray scattering is calculated directly from the ab initio multiconfigurational wave function via a Fourier transform of the electron density, using the first Born approximation for elastic ...
Northey, Thomas   +2 more
openaire   +3 more sources

COMPUTATIONAL INVESTIGATION ON THE STRUCTURE AND NMR CHEMICAL SHIFTS OF ENDO-CONE [CS2(p-METHYLCALIX[4]ARENE)] COMPLEX

open access: yesIndonesian Journal of Chemistry, 2010
The structure and NMR chemical shifts of endo-cone [CS2(p-methylcalix[4]arene)] complex have been computationally investigated using BIO+ force fields, semi-empirical (PM3) and ab initio (RHF/6-311G++(d,p)) calculations. The first comparison of ab initio
Hanggara Sudrajat   +4 more
doaj   +1 more source

HHG probing of atomic dipoles by electronic wave-packet caustics [PDF]

open access: yesEPJ Web of Conferences, 2019
We exploit high-order harmonic generation spectroscopy at the caustics of the recombining electron wave-packet as a method for directly comparing experimental spectra with ab-initio theories.
Faccialà Davide   +9 more
doaj   +1 more source

Ab initio calculations of the spectrum of lawrencium [PDF]

open access: yesPhysical Review A, 2021
13 pages, 4 figures, 7 ...
E. V. Kahl   +4 more
openaire   +6 more sources

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