Calculations are reported on the dipole moments, transition energies, and hyperpolarizabilities of 1-amino-4-nitrobutadiene and its four aza-analogs using a semiempirical sum-over-states method. The results obtained suggest that the presence of nitrogen in the unsaturated chain can have a substantia
MCSCF calculation of the frequency-dependent hyperpolarizability of the lithium atom
✍ Scribed by Michał Jaszuński; Antonio Rizzo
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 462 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
The second electric dipole hyperpolarizability of the lithium atom is calculated using a series of multiconfiguration SCF wave functions with an increasing number of active space orbitals. In agreement with other recent calculations, we find a very large correlation correction to the hyperpolarizability. We analyze the frequency dependence of the dc Kerr hyperpolarizabily y K ( w ) = y ( -w ; w , 0,O) and observe very significant dispersion effects.
📜 SIMILAR VOLUMES
A method is proposed to evaluate the hyperpolarizability directly from the ab initio CI matrices without diagonalizing them. The method is an extension of that called "the frequency-dependent moment method", which we have developed and applied for frequency-dependent polarizability calculations.
Multicontiition self-consistent tield+configuration interaction wavefunctions were used to compute potential energy curves of the lowest doublet and quadruplet states of CO\*. Spin-orbit splitting the three lowest 'II states and dipole moment for the X \*Z+, A 'IL and D 'lT states bave been determin
The anisotropy of the magnetic hyperpolarizability A~/, which determines the Cotton-Mouton effect, has been calculated for the Ne atom using the multiconfiguration response method. Our result for A~/at wavelength 2=514.5 nm, 2.670+0.145 (in atomic units of r/), agrees well with previous estimates an