Formation of molecular ions by radiative association of cold trapped atoms and ions
Radiative emission during cold collisions between trapped laser-cooled Rb atoms and alkaline-earth ions (Ca ^+ , Sr ^+ , Ba ^+ ) and Yb ^+ , and between Li and Yb ^+ , are studied theoretically, using accurate effective core potential based quantum chemistry calculations of potential energy curves a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/4/045015 |
| _version_ | 1797751235983441920 |
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| author | Humberto da Silva Jr Maurice Raoult Mireille Aymar Olivier Dulieu |
| author_facet | Humberto da Silva Jr Maurice Raoult Mireille Aymar Olivier Dulieu |
| author_sort | Humberto da Silva Jr |
| collection | DOAJ |
| description | Radiative emission during cold collisions between trapped laser-cooled Rb atoms and alkaline-earth ions (Ca ^+ , Sr ^+ , Ba ^+ ) and Yb ^+ , and between Li and Yb ^+ , are studied theoretically, using accurate effective core potential based quantum chemistry calculations of potential energy curves and transition dipole moments of the related molecular ions. Radiative association of molecular ions is predicted to occur for all systems with a cross section two to ten times larger than the radiative charge transfer one. Partial and total rate constants are also calculated and compared to available experiments. Narrow shape resonances are expected, which could be detectable at low temperature with an experimental resolution at the limit of the present standards. Vibrational distributions are also calculated, showing that the final molecular ions are not created in their ground state level. |
| first_indexed | 2024-03-12T16:44:34Z |
| format | Article |
| id | doaj.art-76a8a32ce78b434e9d8c6aab030b74ca |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:44:34Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-76a8a32ce78b434e9d8c6aab030b74ca2023-08-08T14:16:59ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117404501510.1088/1367-2630/17/4/045015Formation of molecular ions by radiative association of cold trapped atoms and ionsHumberto da Silva Jr0Maurice Raoult1Mireille Aymar2Olivier Dulieu3Laboratoire Aimé Cotton, CNRS/Université Paris-Sud/ENS Cachan, Orsay Cedex, FranceLaboratoire Aimé Cotton, CNRS/Université Paris-Sud/ENS Cachan, Orsay Cedex, FranceLaboratoire Aimé Cotton, CNRS/Université Paris-Sud/ENS Cachan, Orsay Cedex, FranceLaboratoire Aimé Cotton, CNRS/Université Paris-Sud/ENS Cachan, Orsay Cedex, FranceRadiative emission during cold collisions between trapped laser-cooled Rb atoms and alkaline-earth ions (Ca ^+ , Sr ^+ , Ba ^+ ) and Yb ^+ , and between Li and Yb ^+ , are studied theoretically, using accurate effective core potential based quantum chemistry calculations of potential energy curves and transition dipole moments of the related molecular ions. Radiative association of molecular ions is predicted to occur for all systems with a cross section two to ten times larger than the radiative charge transfer one. Partial and total rate constants are also calculated and compared to available experiments. Narrow shape resonances are expected, which could be detectable at low temperature with an experimental resolution at the limit of the present standards. Vibrational distributions are also calculated, showing that the final molecular ions are not created in their ground state level.https://doi.org/10.1088/1367-2630/17/4/045015cold molecular ionsradiative associationshape resonanceselectronic structure calculationseffective core potentialscore polarization potentials |
| spellingShingle | Humberto da Silva Jr Maurice Raoult Mireille Aymar Olivier Dulieu Formation of molecular ions by radiative association of cold trapped atoms and ions New Journal of Physics cold molecular ions radiative association shape resonances electronic structure calculations effective core potentials core polarization potentials |
| title | Formation of molecular ions by radiative association of cold trapped atoms and ions |
| title_full | Formation of molecular ions by radiative association of cold trapped atoms and ions |
| title_fullStr | Formation of molecular ions by radiative association of cold trapped atoms and ions |
| title_full_unstemmed | Formation of molecular ions by radiative association of cold trapped atoms and ions |
| title_short | Formation of molecular ions by radiative association of cold trapped atoms and ions |
| title_sort | formation of molecular ions by radiative association of cold trapped atoms and ions |
| topic | cold molecular ions radiative association shape resonances electronic structure calculations effective core potentials core polarization potentials |
| url | https://doi.org/10.1088/1367-2630/17/4/045015 |
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