Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa
Using x-ray diffraction at the LCLS x-ray free electron laser, we have determined simultaneously and self-consistently the phase transitions and equation-of-state of the lightest transition metal, scandium, under shock compression. On compression scandium undergoes a structural phase transition betw...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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American Physical Society
2017
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| _version_ | 1797082302489034752 |
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| author | Briggs, B Gorman, M Coleman, A McWilliams, R McBride, E McGonegle, D Peacock, L Rothman, S Macleod, S Bolme, C Gleason, A Collins, G Eggert, J Fratanduono, D Smith, R Galtier, E Granados, E Lee, H Nagler, B Nam, I Xing, Z Wark, J McMahon, M |
| author_facet | Briggs, B Gorman, M Coleman, A McWilliams, R McBride, E McGonegle, D Peacock, L Rothman, S Macleod, S Bolme, C Gleason, A Collins, G Eggert, J Fratanduono, D Smith, R Galtier, E Granados, E Lee, H Nagler, B Nam, I Xing, Z Wark, J McMahon, M |
| author_sort | Briggs, B |
| collection | OXFORD |
| description | Using x-ray diffraction at the LCLS x-ray free electron laser, we have determined simultaneously and self-consistently the phase transitions and equation-of-state of the lightest transition metal, scandium, under shock compression. On compression scandium undergoes a structural phase transition between 32 and 35 GPa to the same bcc structure seen at high temperatures at ambient pressures, and then a further transition at 46 GPa to the incommensurate host-guest polymorph found above 21 GPa in static compression at room temperature. Shock melting of the host-guest phase is observed between 53 and 72 GPa with the disappearance of Bragg scattering and the growth of a broad asymmetric diffraction peak from the high-density liquid. |
| first_indexed | 2024-03-07T01:26:13Z |
| format | Journal article |
| id | oxford-uuid:9211faed-6f9e-4b24-b2b4-6576d09e35d7 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:26:13Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:9211faed-6f9e-4b24-b2b4-6576d09e35d72022-03-26T23:23:05ZUltra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9211faed-6f9e-4b24-b2b4-6576d09e35d7Symplectic Elements at OxfordAmerican Physical Society2017Briggs, BGorman, MColeman, AMcWilliams, RMcBride, EMcGonegle, DPeacock, LRothman, SMacleod, SBolme, CGleason, ACollins, GEggert, JFratanduono, DSmith, RGaltier, EGranados, ELee, HNagler, BNam, IXing, ZWark, JMcMahon, MUsing x-ray diffraction at the LCLS x-ray free electron laser, we have determined simultaneously and self-consistently the phase transitions and equation-of-state of the lightest transition metal, scandium, under shock compression. On compression scandium undergoes a structural phase transition between 32 and 35 GPa to the same bcc structure seen at high temperatures at ambient pressures, and then a further transition at 46 GPa to the incommensurate host-guest polymorph found above 21 GPa in static compression at room temperature. Shock melting of the host-guest phase is observed between 53 and 72 GPa with the disappearance of Bragg scattering and the growth of a broad asymmetric diffraction peak from the high-density liquid. |
| spellingShingle | Briggs, B Gorman, M Coleman, A McWilliams, R McBride, E McGonegle, D Peacock, L Rothman, S Macleod, S Bolme, C Gleason, A Collins, G Eggert, J Fratanduono, D Smith, R Galtier, E Granados, E Lee, H Nagler, B Nam, I Xing, Z Wark, J McMahon, M Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title | Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title_full | Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title_fullStr | Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title_full_unstemmed | Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title_short | Ultra-fast x-ray diffraction studies of the phase transitions and equation of state of scandium shock-compressed to 82 GPa |
| title_sort | ultra fast x ray diffraction studies of the phase transitions and equation of state of scandium shock compressed to 82 gpa |
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