3dnd J = 4, 5 autoionizing levels in Ca: laser optogalovanic spectroscopy and theoretical analysis
| dc.contributor.author | Assimopoulos, S. | en |
| dc.contributor.author | Bolovinos, A. | en |
| dc.contributor.author | Luc-Koenig, E. | en |
| dc.contributor.author | Cohen, S. | en |
| dc.contributor.author | Lyras, A. | en |
| dc.contributor.author | Tsekeris, P. | en |
| dc.contributor.author | Aymar, M. | en |
| dc.date.accessioned | 2015-11-24T18:33:53Z | |
| dc.date.available | 2015-11-24T18:33:53Z | |
| dc.identifier.issn | 1434-6060 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/16832 | |
| dc.rights | Default Licence | - |
| dc.subject | quantum-defect theory | en |
| dc.subject | r-matrix calculation | en |
| dc.subject | optogalvanic spectroscopy | en |
| dc.subject | neutral barium | en |
| dc.subject | spectrum | en |
| dc.subject | calcium | en |
| dc.subject | series | en |
| dc.subject | states | en |
| dc.subject | limit | en |
| dc.title | 3dnd J = 4, 5 autoionizing levels in Ca: laser optogalovanic spectroscopy and theoretical analysis | en |
| heal.abstract | We report the even parity J = 4,5 autoionizing spectra of calcium below the 3d threshold, investigated by two-step laser excitation from the 3d4s metastables through the 3d4p F-3(3, 4), F-1(3) intermediate states and subsequent optogalvanic detection. The 3d4s states are populated by electronic collisions in a d.c. glow discharge sustained in a Ca heat-pipe. More than a hundred resonant transitions have been measured with an accuracy of similar to 0.2 cm(-1) for the narrow ones using standard laser calibration techniques. The high lying levels are assigned to all expected 3dnd J = 4, 5 autoionizing series. Moreover, some 3dng J = 4, 5 levels are observed. The theoretical interpretation is achieved by a combination of the nearly ab initio eigenchannel R-matrix and multichannel quantum-defect (MQDT) methods as well as by an empirical determination of the MQDT parameters in the phase-shifted formulation. Theoretical energy level positions and excitation profiles are compared with the experimental data confirming the identification of the observed structures. Strong mixing between 3dnd J = 4 series is found, while the 3dng ones do not couple with the 3dnd series. Further insight into the strong channel mixing in the studied energy range is provided by a comprehensive review of the excitation profiles in the vicinity of the 4p5p D-3(3) perturber as obtained from a number of intermediate levels used in the present and in earlier experiments. Systematic electron correlation trends for Ndnd J = 4 series of Ca(N = 3), Sr(N = 4) and Ba(N = 5) are discussed. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000073581700004 | - |
| heal.identifier.secondary | http://link.springer.com/content/pdf/10.1007%2Fs100530050089.pdf | - |
| heal.journalName | European Physical Journal D | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1998 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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