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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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| HAL : hal-00720106, version 1 |
| Fiche détaillée |  Récupérer au format |
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| Line Profiles of Ni-like Collisional XUV Laser Amplifiers: Particle Correlation Effects |
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| Annette Calisti 1Sandrine Ferri 1 |
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| (23/07/2012) |
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| The effects of particle correlations on the spectral broadening due to the radiator motion (Doppler broadening) are discussed for a Ni-like XUV laser line pumped in two different regimes of collisional excitation. The transient pumping for which ionic temperature is relatively low (the plasma coupling parameters is large), and the quasi steady-state pumping (QSS) for which the ionic temperature is higher and the plasma coupling parameter of the order of 1 are considered. It is shown by using classical Molecular Dynamics simulation techniques that in both cases the effect of correlations modify the radiator-motion broadened profiles and cannot be neglected in evaluating Doppler effect. This is due to the fact that the radiator velocity changes during the radiation emission resulting in a mixing of velocities in the line profile. It is also shown that this results in a homogenization of the intrinsic line profiles. |
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| 1 : | Physique des interactions ioniques et moléculaires (PIIM) |
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CNRS : UMR6633 – Université de Provence - Aix-Marseille I |
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| 2 : | Institut des Sciences Moléculaires d'Orsay (ISMO) |
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CNRS : UMR8214 – Université Paris XI - Paris Sud |
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| 3 : | Laboratoire Aimé Cotton (LAC) |
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CNRS : UPR3321 – Université Paris XI - Paris Sud |
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| 4 : | Laboratoire de Physique des Gaz et des Plasmas (LPGP) |
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CNRS : UMR8578 – Université Paris XI - Paris Sud |
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| Domaine | : | Physique/Physique/Physique des plasmas |
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| Line shapes – Doppler broadening – X-ray lasers – Molecular Dynamics simulations – velocity-changing effects |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00720106, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00720106 | |
| oai:hal.archives-ouvertes.fr:hal-00720106 | |
| Contributeur : Annette Calisti | |
| Soumis le : Lundi 23 Juillet 2012, 15:57:52 | |
| Dernière modification le : Lundi 23 Juillet 2012, 16:05:30 | |
