Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe
Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research.There exists very little experimental data probing WDM states atthe atomic levelto test current models and those performed up to now are limited in quality. Here, we report a proof-ofpri...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Nature Research
2016
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| _version_ | 1826264153193447424 |
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| author | Torchio, R Occelli, F Mathon, O Sollier, A Lescoute, E Videau, L Vinci, T Benuzzi-Mounaix, A Headspith, J Helsby, W Bland, S Eakins, D Chapman, D Pascarelli, S Loubeyre, P |
| author_facet | Torchio, R Occelli, F Mathon, O Sollier, A Lescoute, E Videau, L Vinci, T Benuzzi-Mounaix, A Headspith, J Helsby, W Bland, S Eakins, D Chapman, D Pascarelli, S Loubeyre, P |
| author_sort | Torchio, R |
| collection | OXFORD |
| description | Understanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research.There exists very little experimental data probing WDM states atthe atomic levelto test current models and those performed up to now are limited in quality. Here, we report a proof-ofprinciple experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states ofWDM Fe. Structural and electronic changes in Fe are clearly observed forthe first time at such extreme conditions.The amplitude ofthe EXAFS oscillations persists up to 500GPa and 17000K, suggesting an enduring local order. Moreover, a discrepancy exists with respectto theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models. |
| first_indexed | 2024-03-06T20:03:11Z |
| format | Journal article |
| id | oxford-uuid:2805616f-0d3f-478a-bbd6-903767abacb5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:03:11Z |
| publishDate | 2016 |
| publisher | Nature Research |
| record_format | dspace |
| spelling | oxford-uuid:2805616f-0d3f-478a-bbd6-903767abacb52022-03-26T12:10:27ZProbing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked FeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2805616f-0d3f-478a-bbd6-903767abacb5EnglishSymplectic Elements at OxfordNature Research2016Torchio, ROccelli, FMathon, OSollier, ALescoute, EVideau, LVinci, TBenuzzi-Mounaix, AHeadspith, JHelsby, WBland, SEakins, DChapman, DPascarelli, SLoubeyre, PUnderstanding Warm Dense Matter (WDM), the state of planetary interiors, is a new frontier in scientific research.There exists very little experimental data probing WDM states atthe atomic levelto test current models and those performed up to now are limited in quality. Here, we report a proof-ofprinciple experiment that makes microscopic investigations of materials under dynamic compression easily accessible to users and with data quality close to that achievable at ambient. Using a single 100 ps synchrotron x-ray pulse, we have measured, by K-edge absorption spectroscopy, ns-lived equilibrium states ofWDM Fe. Structural and electronic changes in Fe are clearly observed forthe first time at such extreme conditions.The amplitude ofthe EXAFS oscillations persists up to 500GPa and 17000K, suggesting an enduring local order. Moreover, a discrepancy exists with respectto theoretical calculations in the value of the energy shift of the absorption onset and so this comparison should help to refine the approximations used in models. |
| spellingShingle | Torchio, R Occelli, F Mathon, O Sollier, A Lescoute, E Videau, L Vinci, T Benuzzi-Mounaix, A Headspith, J Helsby, W Bland, S Eakins, D Chapman, D Pascarelli, S Loubeyre, P Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title | Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title_full | Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title_fullStr | Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title_full_unstemmed | Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title_short | Probing local and electronic structure in Warm Dense Matter: single pulse synchrotron x-ray absorption spectroscopy on shocked Fe |
| title_sort | probing local and electronic structure in warm dense matter single pulse synchrotron x ray absorption spectroscopy on shocked fe |
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