3dnl-J=3(E) Autoionizing Levels of Calcium - Observation by Laser Optogalvanic Spectroscopy and Theoretical-Analysis
| dc.contributor.author | Luckoenig, E. | en |
| dc.contributor.author | Bolovinos, A. | en |
| dc.contributor.author | Aymar, M. | en |
| dc.contributor.author | Assimopoulos, S. | en |
| dc.contributor.author | Jimoyiannis, A. | en |
| dc.contributor.author | Tsekeris, P. | en |
| dc.date.accessioned | 2015-11-24T18:33:53Z | |
| dc.date.available | 2015-11-24T18:33:53Z | |
| dc.identifier.issn | 0178-7683 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/16830 | |
| dc.rights | Default Licence | - |
| dc.subject | quantum-defect theory | en |
| dc.subject | barium | en |
| dc.title | 3dnl-J=3(E) Autoionizing Levels of Calcium - Observation by Laser Optogalvanic Spectroscopy and Theoretical-Analysis | en |
| heal.abstract | The even parity J = 3 autoionizing spectra of calcium were investigated below the 3d threshold by a two-step laser excitation from the 3d 4s metastables through the 3 d 4 p 3P2, 1F3 intermediate states. The 3 d 4 s were populated by electronic collisions in a d.c. glow discharge through a Ca heat-pipe. More than a hundred resonance transitions have been measured with an accuracy of approximately 0.2 cm-1 for the narrow ones using standard laser calibration techniques. Their upper levels are assigned to all expected nine autoionizing 3 d n s, 3 d n d and 3 d n g Rydberg series and the 4 p 5 p 3D3 perturber. The theoretical interpretation is achieved by a combination of the eigenchannel R-matrix and multichannel quantum defect (MQDT) methods. Ten closed and two open J = 3 interacting channesl are used. Theoretical energy level positions and excitation profiles are compared with the experimental data confirming the identification of the observed structures. Strong mixing between the 3d3/2 nd5/2 and 3d5/2 nd3/2 series is found, while the 3d3/2 nd3/2 and 3d5/2 nd5/2 series are almost pure jj-coupled. The calculations were particularly successful in reproducing the spectrum in the region of the 4 p 5 p 3D3 perturber, where strong chancel mixing appears leading to interference effects in the excitation cross sections. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1994PT49300009 | - |
| heal.identifier.secondary | http://link.springer.com/content/pdf/10.1007%2FBF01425923.pdf | - |
| heal.journalName | Zeitschrift Fur Physik D-Atoms Molecules and Clusters | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1994 | - |
| 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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