Strong coupling corrections in the analysis of x-ray Thomson scattering measurements
We present simplified expressions for the dynamic structure factor, or form factor S(k, omega), which is the quantity describing the inelastic x-ray scattering cross section from a dense plasma or a simple liquid. Our results, based on the random phase approximation (RPA) for the treatment on the ch...
| Main Authors: | , , |
|---|---|
| Format: | Conference item |
| Published: |
2003
|
| _version_ | 1826258105925632000 |
|---|---|
| author | Gregori, G Glenzer, S Landen, O |
| author_facet | Gregori, G Glenzer, S Landen, O |
| author_sort | Gregori, G |
| collection | OXFORD |
| description | We present simplified expressions for the dynamic structure factor, or form factor S(k, omega), which is the quantity describing the inelastic x-ray scattering cross section from a dense plasma or a simple liquid. Our results, based on the random phase approximation (RPA) for the treatment on the charged particle coupling, are compared with analytical expressions for the free electron dynamic structure factor which include effects of strong coupling in both classical and degenerate plasmas. We will show that these modifications introduce minimal corrections to the RPA for typical conditions found in recent non-collective x-ray Thomson scattering experiment on solid density isochorically heated laser plasmas. On the other hand, strong collective scattering may exhibit significant deviations from the RPA. The results shown in this work can be applied to interpreting future x-ray scattering in warm dense plasmas occurring in inertial confinement fusion experiments or for the modelling of solid density matter found in the interior of planets. |
| first_indexed | 2024-03-06T18:28:46Z |
| format | Conference item |
| id | oxford-uuid:08e7b208-dc96-46fe-ab1a-b024f481d2d7 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:28:46Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:08e7b208-dc96-46fe-ab1a-b024f481d2d72022-03-26T09:15:22ZStrong coupling corrections in the analysis of x-ray Thomson scattering measurementsConference itemhttp://purl.org/coar/resource_type/c_5794uuid:08e7b208-dc96-46fe-ab1a-b024f481d2d7Symplectic Elements at Oxford2003Gregori, GGlenzer, SLanden, OWe present simplified expressions for the dynamic structure factor, or form factor S(k, omega), which is the quantity describing the inelastic x-ray scattering cross section from a dense plasma or a simple liquid. Our results, based on the random phase approximation (RPA) for the treatment on the charged particle coupling, are compared with analytical expressions for the free electron dynamic structure factor which include effects of strong coupling in both classical and degenerate plasmas. We will show that these modifications introduce minimal corrections to the RPA for typical conditions found in recent non-collective x-ray Thomson scattering experiment on solid density isochorically heated laser plasmas. On the other hand, strong collective scattering may exhibit significant deviations from the RPA. The results shown in this work can be applied to interpreting future x-ray scattering in warm dense plasmas occurring in inertial confinement fusion experiments or for the modelling of solid density matter found in the interior of planets. |
| spellingShingle | Gregori, G Glenzer, S Landen, O Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title | Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title_full | Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title_fullStr | Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title_full_unstemmed | Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title_short | Strong coupling corrections in the analysis of x-ray Thomson scattering measurements |
| title_sort | strong coupling corrections in the analysis of x ray thomson scattering measurements |
| work_keys_str_mv | AT gregorig strongcouplingcorrectionsintheanalysisofxraythomsonscatteringmeasurements AT glenzers strongcouplingcorrectionsintheanalysisofxraythomsonscatteringmeasurements AT landeno strongcouplingcorrectionsintheanalysisofxraythomsonscatteringmeasurements |