The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere
In this paper we present the results of a study of the effect of vibrationally excited oxygen, O<sup>*</sup><sub>2</sub>, and nitrogen, N<sup>*</sup><sub>2</sub>, on the electron density,...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
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| Series: | Annales Geophysicae |
| Online Access: | http://www.ann-geophys.net/12/1085/1994/angeo-12-1085-1994.html |
| _version_ | 1828432550956105728 |
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| author | A. V. Pavlov |
| author_facet | A. V. Pavlov |
| author_sort | A. V. Pavlov |
| collection | DOAJ |
| description | In this paper we present the results of a study of the effect of vibrationally excited oxygen, O<sup>*</sup><sub>2</sub>, and nitrogen, N<sup>*</sup><sub>2</sub>, on the electron density, <i>N</i><sub>e</sub>, and the electron temperature, <i>T</i><sub>e</sub>, in the D and E regions. The sources of O<sup>*</sup><sub>2</sub> are O-atom recombination, the photodissociation of O<sub>3</sub>, and the reaction of O<sub>3</sub> with O at D region altitudes. The first calculations of O<sup>*</sup><sub>2</sub>( <i>j</i>) number densities, <i>N</i><sub><i>j</i></sub>, are obtained by solving continuity equations for the models of harmonic and anharmonic oscillator energy levels, <i>j</i>=1-22. It is found that day time values of <i>N</i><sub><i>j</i></sub> are less than nighttime values. We also show that the photoionization of O<sup>*</sup><sub>2</sub> ( <i>j</i> ≥ 11) by L<sub>&#x03B1;</sub>-radiation has no influence on the D region <i>N</i><sub><i>e</i></sub>. In the nighttime D region the photoionization O<sup>*</sup><sub>2</sub> ( <i>j</i> ≥ 11) by scattered <i>L</i><sub>&#x03B1;</sub>-radiation can be a new source of O<sup>+</sup><sub>2</sub>. We show that the N<sup>*</sup><sub>2</sub> and O<sup>*</sup><sub>2</sub> de-excitation effect on the electron temperature is small in the E region of the ionosphere and cannot explain experimentally observed higher electron temperatures. |
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| issn | 0992-7689 1432-0576 |
| language | English |
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| series | Annales Geophysicae |
| spelling | doaj.art-f8f8665f765642029245d89d75dc03512022-12-22T01:38:11ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761210/1110851090The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphereA. V. PavlovIn this paper we present the results of a study of the effect of vibrationally excited oxygen, O<sup>*</sup><sub>2</sub>, and nitrogen, N<sup>*</sup><sub>2</sub>, on the electron density, <i>N</i><sub>e</sub>, and the electron temperature, <i>T</i><sub>e</sub>, in the D and E regions. The sources of O<sup>*</sup><sub>2</sub> are O-atom recombination, the photodissociation of O<sub>3</sub>, and the reaction of O<sub>3</sub> with O at D region altitudes. The first calculations of O<sup>*</sup><sub>2</sub>( <i>j</i>) number densities, <i>N</i><sub><i>j</i></sub>, are obtained by solving continuity equations for the models of harmonic and anharmonic oscillator energy levels, <i>j</i>=1-22. It is found that day time values of <i>N</i><sub><i>j</i></sub> are less than nighttime values. We also show that the photoionization of O<sup>*</sup><sub>2</sub> ( <i>j</i> ≥ 11) by L<sub>&#x03B1;</sub>-radiation has no influence on the D region <i>N</i><sub><i>e</i></sub>. In the nighttime D region the photoionization O<sup>*</sup><sub>2</sub> ( <i>j</i> ≥ 11) by scattered <i>L</i><sub>&#x03B1;</sub>-radiation can be a new source of O<sup>+</sup><sub>2</sub>. We show that the N<sup>*</sup><sub>2</sub> and O<sup>*</sup><sub>2</sub> de-excitation effect on the electron temperature is small in the E region of the ionosphere and cannot explain experimentally observed higher electron temperatures.http://www.ann-geophys.net/12/1085/1994/angeo-12-1085-1994.html |
| spellingShingle | A. V. Pavlov The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere Annales Geophysicae |
| title | The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere |
| title_full | The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere |
| title_fullStr | The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere |
| title_full_unstemmed | The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere |
| title_short | The role of vibrationally excited oxygen and nitrogen in the D and E regions of the ionosphere |
| title_sort | role of vibrationally excited oxygen and nitrogen in the d and e regions of the ionosphere |
| url | http://www.ann-geophys.net/12/1085/1994/angeo-12-1085-1994.html |
| work_keys_str_mv | AT avpavlov theroleofvibrationallyexcitedoxygenandnitrogeninthedanderegionsoftheionosphere AT avpavlov roleofvibrationallyexcitedoxygenandnitrogeninthedanderegionsoftheionosphere |