Zobrazeno 1 - 10
of 70
pro vyhledávání: '"L U Ancarani"'
Publikováno v:
Physical Review A. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c1ff42127185cf8a3fe2b8b64ec2b60
https://doi.org/10.1103/physreva.105.062818
https://doi.org/10.1103/physreva.105.062818
Publikováno v:
The European Physical Journal Plus. 137
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa7893687e9ab70fb28b4cf4969d5716
https://doi.org/10.1140/epjp/s13360-022-02712-9
https://doi.org/10.1140/epjp/s13360-022-02712-9
Publikováno v:
Journal of Physics: Conference Series. 1412:152079
Synopsis One particle atomic and molecular bound functions can be easily fitted with a set of real Gaussian type orbitals (r-GTOs). Here we explore how continuum wave functions such as Bessel, Coulomb or generalized Sturmian functions can be represen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff6bae37af22b0f6fbbc611fd5cb782e
https://doi.org/10.1088/1742-6596/1412/15/152079
https://doi.org/10.1088/1742-6596/1412/15/152079
Autor:
L U Ancarani, J M Randazzo
Publikováno v:
Journal of Physics: Conference Series. 1412:132043
Synopsis We present a novel spectral approach to deal both with bound states and with stationary continuum waves associated to collision problems. It is based on the definition of a two dimensional radial basis which replaces the combination of singl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3252e9092553e7c5191b8c2891e483f
https://doi.org/10.1088/1742-6596/1412/13/132043
https://doi.org/10.1088/1742-6596/1412/13/132043
Publikováno v:
International Journal of Quantum Chemistry. 111:4255-4265
n1,3S (n = 1 − 4) states for atomic three-body systems are studied with the Angular Correlated Configuration Interaction method. A recently proposed angularly correlated basis set is used to construct, simultaneously and with a single diagonalizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::129ec34afb8ab10097bdbbc3a342c53e
https://doi.org/10.1002/qua.22938
https://doi.org/10.1002/qua.22938
Autor:
Gustavo Gasaneo, L. U. Ancarani
Publikováno v:
Hyperfine Interactions. 193:135-139
An analytic wavefunction is proposed for the ground state of general atomic three-body systems in which two light particles are negatively charged and the third (heavy) is positively charged. By construction the wavefunction (i) has the same analytic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9b4adc55367241edc38964c69d6f7a0
https://doi.org/10.1007/s10751-009-0053-2
https://doi.org/10.1007/s10751-009-0053-2
Publikováno v:
Hyperfine Interactions. 193:147-151
The angularly correlated basis functions proposed by Gasaneo and Ancarani (Phys Rev, A 77:012705, 2008) are used to construct approximated wavefunctions, satisfying all two-body cusp conditions, for several three-body systems. The focus here is on th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bfeb63ddebb42c96de3902a7795b0dc
https://doi.org/10.1007/s10751-009-9992-x
https://doi.org/10.1007/s10751-009-9992-x
Autor:
L. U. Ancarani, C. Dal Cappello
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 161:22-26
Calculations of differential cross sections for high incident energy (e,3e) process on helium are presented and compared to absolute measurements. Within the first Born approximation, the 3 C final state model is used in combination with several Pluv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1ffd1bd134db3a51b5abd10f0ea95a0
https://doi.org/10.1016/j.elspec.2007.02.003
https://doi.org/10.1016/j.elspec.2007.02.003
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:2695-2702
We propose a simple and pedagogical wavefunction for the ground state of two-electron atoms which (i) is parameter free, (ii) satisfies all two-particle cusp conditions, (iii) yields reasonable ground-state energies, including the prediction of a bou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5464d6245c918b6ecbf147b1041aa530
https://doi.org/10.1088/0953-4075/40/13/013
https://doi.org/10.1088/0953-4075/40/13/013
Autor:
L U Ancarani
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 39:3309-3313
One of the simplest s-wave models of a two-electron atom, in which the electron–electron repulsion is replaced by the lowest order term in a onecentre expansion about the nucleus, is investigated. The comparison of the corresponding Schr¨ odinger
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55152eb7ce7b7a23c7bad5d727de5527
https://doi.org/10.1088/0953-4075/39/16/013
https://doi.org/10.1088/0953-4075/39/16/013