Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser
Knowing the characteristic relaxation time of free electrons in a dense plasma is crucial to our understanding of plasma equilibration and transport. However, experimental investigations of electron relaxation dynamics have been hindered by the ultrafast, sub-femtosecond timescales on which these in...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
AIP Publishing
2024
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| _version_ | 1826314948703158272 |
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| author | Shi, Y Ren, S Chung, H-K Wark, J Vinko, S |
| author_facet | Shi, Y Ren, S Chung, H-K Wark, J Vinko, S |
| author_sort | Shi, Y |
| collection | OXFORD |
| description | Knowing the characteristic relaxation time of free electrons in a dense plasma is crucial to our understanding of plasma equilibration and transport. However, experimental investigations of electron relaxation dynamics have been hindered by the ultrafast, sub-femtosecond timescales on which these interactions typically take place. Here, we propose a novel approach that uses x rays from a free electron laser to generate well-defined non-thermal electron distributions, which can then be tracked via emission spectroscopy from radiative recombination as they thermalize. Collisional radiative simulations reveal how this method can enable the measurement of electron relaxation timescales in situ, shedding light on the applicability and accuracy of the Coulomb logarithm framework for modeling collisions in dense plasmas. |
| first_indexed | 2024-09-25T04:20:59Z |
| format | Journal article |
| id | oxford-uuid:b8d091ce-5f15-4149-ae60-63678b6a057d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-12-09T03:15:03Z |
| publishDate | 2024 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:b8d091ce-5f15-4149-ae60-63678b6a057d2024-10-18T09:32:29ZExploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laserJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b8d091ce-5f15-4149-ae60-63678b6a057dEnglishSymplectic ElementsAIP Publishing2024Shi, YRen, SChung, H-KWark, JVinko, SKnowing the characteristic relaxation time of free electrons in a dense plasma is crucial to our understanding of plasma equilibration and transport. However, experimental investigations of electron relaxation dynamics have been hindered by the ultrafast, sub-femtosecond timescales on which these interactions typically take place. Here, we propose a novel approach that uses x rays from a free electron laser to generate well-defined non-thermal electron distributions, which can then be tracked via emission spectroscopy from radiative recombination as they thermalize. Collisional radiative simulations reveal how this method can enable the measurement of electron relaxation timescales in situ, shedding light on the applicability and accuracy of the Coulomb logarithm framework for modeling collisions in dense plasmas. |
| spellingShingle | Shi, Y Ren, S Chung, H-K Wark, J Vinko, S Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title | Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title_full | Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title_fullStr | Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title_full_unstemmed | Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title_short | Exploring relaxation dynamics in warm dense plasmas by tailoring non-thermal electron distributions with a free electron laser |
| title_sort | exploring relaxation dynamics in warm dense plasmas by tailoring non thermal electron distributions with a free electron laser |
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