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Ab initio study of high-lying doubly excited states of helium in static electric fields: Complex-scaling generalized pseudospectral method in hyperspherical coordinates
dc.contributor.author | Chu, Shih-I | |
dc.contributor.author | Heslar, John | |
dc.date.accessioned | 2014-11-25T18:39:05Z | |
dc.date.available | 2014-11-25T18:39:05Z | |
dc.date.issued | 2012-09-21 | |
dc.identifier.citation | Chu, Shih-I. & Heslar, John. "Ab initio study of high-lying doubly excited states of helium in static electric fields: Complex-scaling generalized pseudospectral method in hyperspherical coordinates." Phys. Rev. A 86, 032506 – Published 21 September 2012. http://dx.doi.org/10.1103/PhysRevA.86.032506. | |
dc.identifier.uri | http://hdl.handle.net/1808/15876 | |
dc.description | This is the published version, also available here: http://dx.doi.org/10.1103/PhysRevA.86.032506. | |
dc.description.abstract | We present a complex-scaling (CS) generalized pseudospectral (GPS) method in hyperspherical coordinates (HSC) for ab initio and accurate treatment of the resonance energies and autoionization widths of two-electron atomic systems in the presence of a strong dc electric field. The GPS method allows nonuniform and optimal spatial discretization of the two-electron Hamiltonian in HSC with the use of only a modest number of grid points. The procedure is applied for the first precision calculation of the energies and autoionization widths for the high-lying 1Se, 1Po, 1De, and 1Fo (n=10–20) doubly excited resonance states of He atoms. In addition, we present a theoretical prediction of the energies and widths of high-lying doubly excited resonance states of 1Po (n= 8–15) in external dc electric field strengths of 3.915–10.44 kV/cm. The calculated dc-field perturbed high-lying resonance energies are in good agreement with the latest experimental data. | |
dc.publisher | American Physical Society | |
dc.title | Ab initio study of high-lying doubly excited states of helium in static electric fields: Complex-scaling generalized pseudospectral method in hyperspherical coordinates | |
dc.type | Article | |
kusw.kuauthor | Chu, Shih-I | |
kusw.kudepartment | Chemistry | |
kusw.oastatus | fullparticipation | |
dc.identifier.doi | 10.1103/PhysRevA.86.032506 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |