Low frequency structural dynamics of warm dense matter
Measurements of the microscopic response of warm dense matter have been demonstrated by multi-keV inelastic x-ray scattering using laser-based sources. These techniques have been used to study the high frequency electron correlations (plasmons) in low to mid- Z plasmas. The advent of fourth generati...
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| Format: | Conference item |
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2009
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| _version_ | 1797092422709149696 |
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| author | Gregori, G Gericke, DO |
| author_facet | Gregori, G Gericke, DO |
| author_sort | Gregori, G |
| collection | OXFORD |
| description | Measurements of the microscopic response of warm dense matter have been demonstrated by multi-keV inelastic x-ray scattering using laser-based sources. These techniques have been used to study the high frequency electron correlations (plasmons) in low to mid- Z plasmas. The advent of fourth generation light sources will provide high fluxes of narrowband and coherent x rays that will allow to look at the low frequency correlations (the ion-acoustic waves). In this paper we present an analysis of such low frequency modes by calculating the frequency dependent ion-ion structure factor. Our model includes all the relevant multibody contributions arising from strong coupling and nonideal plasma effects. In particular, the ion-ion structure factor is obtained within the memory function formalism by satisfying a finite number of sum rules. This work could be used as a basis to a direct experimental test of dense plasma model as soon as keV free electron laser sources will become available. © 2009 American Institute of Physics. |
| first_indexed | 2024-03-07T03:45:42Z |
| format | Conference item |
| id | oxford-uuid:bf64a7eb-1747-470c-aff5-df70bbb2271d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:45:42Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:bf64a7eb-1747-470c-aff5-df70bbb2271d2022-03-27T05:47:04ZLow frequency structural dynamics of warm dense matterConference itemhttp://purl.org/coar/resource_type/c_5794uuid:bf64a7eb-1747-470c-aff5-df70bbb2271dSymplectic Elements at Oxford2009Gregori, GGericke, DOMeasurements of the microscopic response of warm dense matter have been demonstrated by multi-keV inelastic x-ray scattering using laser-based sources. These techniques have been used to study the high frequency electron correlations (plasmons) in low to mid- Z plasmas. The advent of fourth generation light sources will provide high fluxes of narrowband and coherent x rays that will allow to look at the low frequency correlations (the ion-acoustic waves). In this paper we present an analysis of such low frequency modes by calculating the frequency dependent ion-ion structure factor. Our model includes all the relevant multibody contributions arising from strong coupling and nonideal plasma effects. In particular, the ion-ion structure factor is obtained within the memory function formalism by satisfying a finite number of sum rules. This work could be used as a basis to a direct experimental test of dense plasma model as soon as keV free electron laser sources will become available. © 2009 American Institute of Physics. |
| spellingShingle | Gregori, G Gericke, DO Low frequency structural dynamics of warm dense matter |
| title | Low frequency structural dynamics of warm dense matter |
| title_full | Low frequency structural dynamics of warm dense matter |
| title_fullStr | Low frequency structural dynamics of warm dense matter |
| title_full_unstemmed | Low frequency structural dynamics of warm dense matter |
| title_short | Low frequency structural dynamics of warm dense matter |
| title_sort | low frequency structural dynamics of warm dense matter |
| work_keys_str_mv | AT gregorig lowfrequencystructuraldynamicsofwarmdensematter AT gerickedo lowfrequencystructuraldynamicsofwarmdensematter |