Indirect predissociation of highly excited singlet states of N2
Indirect predissociation of the b′ 1Σu+(v = 20) level of N2 is studied experimentally by vacuum-ultraviolet photoabsorption employing synchrotron radiation and a Fourier-transform spectrometer, and interpreted with the aid of a quantitative model of interacting 1Πu and 1Σu+, bound and unbound states...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2015-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20158403004 |
| _version_ | 1818891124205420544 |
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| author | Heays A.N. Lewis B.R. Gibson S.T. Stark G. de Oliveira N. |
| author_facet | Heays A.N. Lewis B.R. Gibson S.T. Stark G. de Oliveira N. |
| author_sort | Heays A.N. |
| collection | DOAJ |
| description | Indirect predissociation of the b′ 1Σu+(v = 20) level of N2 is studied experimentally by vacuum-ultraviolet photoabsorption employing synchrotron radiation and a Fourier-transform spectrometer, and interpreted with the aid of a quantitative model of interacting 1Πu and 1Σu+, bound and unbound states which solves the coupled Schrödinger equation. An observed rotationally-localised peak in the b′(20) predissociation linewidths is identified by the model as arising from an interaction with a strongly predissociated and unobserved bound level of the mixed c3 1Πu and o3 1Πu Rydberg states. This leads to the dissociation of b′(20) into the continuum of the b 1Πu valence state. The residual observed predissociation of b′ 1Σu+(v = 20) apart from the rotationally-localised peak cannot be explained by a mechanism of 1Πu and 1Σu+ interaction, and must involve states of higher multiplicity. |
| first_indexed | 2024-12-19T17:35:49Z |
| format | Article |
| id | doaj.art-aea30376b64743279fafb41cf332cd01 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T17:35:49Z |
| publishDate | 2015-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-aea30376b64743279fafb41cf332cd012022-12-21T20:12:20ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01840300410.1051/epjconf/20158403004epjconf-dr2013_03004Indirect predissociation of highly excited singlet states of N2Heays A.N.0Lewis B.R.1Gibson S.T.2Stark G.3de Oliveira N.4Leiden Observatory, Leiden UniversityResearch School of Physics and Engineering, The Australian National UniversityResearch School of Physics and Engineering, The Australian National UniversityDepartment of Physics, Wellesley CollegeSynchrotron Soleil, Orme des MerisiersIndirect predissociation of the b′ 1Σu+(v = 20) level of N2 is studied experimentally by vacuum-ultraviolet photoabsorption employing synchrotron radiation and a Fourier-transform spectrometer, and interpreted with the aid of a quantitative model of interacting 1Πu and 1Σu+, bound and unbound states which solves the coupled Schrödinger equation. An observed rotationally-localised peak in the b′(20) predissociation linewidths is identified by the model as arising from an interaction with a strongly predissociated and unobserved bound level of the mixed c3 1Πu and o3 1Πu Rydberg states. This leads to the dissociation of b′(20) into the continuum of the b 1Πu valence state. The residual observed predissociation of b′ 1Σu+(v = 20) apart from the rotationally-localised peak cannot be explained by a mechanism of 1Πu and 1Σu+ interaction, and must involve states of higher multiplicity.http://dx.doi.org/10.1051/epjconf/20158403004 |
| spellingShingle | Heays A.N. Lewis B.R. Gibson S.T. Stark G. de Oliveira N. Indirect predissociation of highly excited singlet states of N2 EPJ Web of Conferences |
| title | Indirect predissociation of highly excited singlet states of N2 |
| title_full | Indirect predissociation of highly excited singlet states of N2 |
| title_fullStr | Indirect predissociation of highly excited singlet states of N2 |
| title_full_unstemmed | Indirect predissociation of highly excited singlet states of N2 |
| title_short | Indirect predissociation of highly excited singlet states of N2 |
| title_sort | indirect predissociation of highly excited singlet states of n2 |
| url | http://dx.doi.org/10.1051/epjconf/20158403004 |
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