Direct observation of the alpha-epsilon transition in shock-compressed iron via nanosecond x-ray diffraction
العنوان: | Direct observation of the alpha-epsilon transition in shock-compressed iron via nanosecond x-ray diffraction |
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المؤلفون: | Kalantar, DH, Belak, JF, Collins, GW, Colvin, JD, Davies, HM, Eggert, JH, Germann, TC, Hawreliak, J, Holian, BL, Kadau, K, Lomdahl, PS, Lorenzana, HE, Meyers, MA, Rosolankova, K, Schneider, MS, Sheppard, J, Stölken, JS, Wark, JS |
سنة النشر: | 2016 |
مصطلحات موضوعية: | Astrophysics::High Energy Astrophysical Phenomena |
الوصف: | In situ x-ray diffraction studies of iron under shock conditions confirm unambiguously a phase change from the bcc (alpha) to hcp (epsilon) structure. Previous identification of this transition in shock-loaded iron has been inferred from the correlation between shock-wave-profile analyses and static high-pressure x-ray measurements. This correlation is intrinsically limited because dynamic loading can markedly affect the structural modifications of solids. The in situ measurements are consistent with a uniaxial collapse along the [001] direction and shuffling of alternate (110) planes of atoms, and are in good agreement with large-scale nonequilibrium molecular dynamics simulations. |
اللغة: | English |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c2b604a15fc8cc334719c6c4d92065f3 https://ora.ox.ac.uk/objects/uuid:25d10c10-8e33-49fc-a148-8772fb394803 |
حقوق: | OPEN |
رقم الأكسشن: | edsair.dedup.wf.001..c2b604a15fc8cc334719c6c4d92065f3 |
قاعدة البيانات: | OpenAIRE |
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