In situ x-ray diffraction measurements of the c/a ratio in the high-pressure ∈ phase of shock-compressed polycrystalline iron

James A. Hawreliak; Bassem El-Dasher; Hector Lorenzana; Giles Kimminau; Andrew Higginbotham; Bob Nagler; Sam M. Vinko; William J. Murphy; Thomas Whitcher; Justin S. Wark; Steve Rothman; Nigel Park

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In situ x-ray diffraction measurements of the c/a ratio in the high-pressure ∈ phase of shock-compressed polycrystalline iron

机译：冲击压缩多晶铁的高压ε相中c / a比的原位X射线衍射测量

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The structure of laser-shock-compressed polycrystalline iron was probed using in situ x-ray diffraction over a pressure range spanning the a-∈ phase transition. Measurements were also made of the c/a ratio in the ∈ phase, which, in contrast with previous in situ x-ray diffraction experiments performed on single crystals and large-scale molecular dynamics (MD) simulations are close to those found in high-pressure diamond anvil cell experiments. This is consistent with the observation that significant plastic flow occurs within the nanosecond time scale of the experiment. Furthermore, within the sensitivity of the measurement technique, the fcc phase that had been predicted by MD simulations was not observed.

机译：在横跨a-ε相变的压力范围内，使用原位X射线衍射对激光冲击压缩的多晶铁的结构进行了探测。还测量了ε相中的c / a比率，这与之前对单晶进行的原位X射线衍射实验和大规模分子动力学（MD）模拟相近，压金刚石砧细胞实验。这与观察到的相当大的塑性流动在实验的纳秒时间内发生的观察结果一致。此外，在测量技术的灵敏度范围内，未观察到通过MD模拟预测的fcc相。

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《Physical review》 |2011年第14期|p.144114.1-144114.6|共6页
作者
James A. Hawreliak; Bassem El-Dasher; Hector Lorenzana; Giles Kimminau; Andrew Higginbotham; Bob Nagler; Sam M. Vinko; William J. Murphy; Thomas Whitcher; Justin S. Wark; Steve Rothman; Nigel Park;
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Lawrence Livermore National Laboratory, Livermore, California 94550, USA;

Lawrence Livermore National Laboratory, Livermore, California 94550, USA;

Lawrence Livermore National Laboratory, Livermore, California 94550, USA;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford 0X1 3PU, United Kingdom;

AWE Aldermaston, Reading, United Kingdom;

AWE Aldermaston, Reading, United Kingdom;

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indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.);

机译：位错和其他缺陷（电阻率;滑动;蠕变;应变;内摩擦;EPR;NMR等）的间接证据;

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2. Evolution of implicate order from amorphous to polycrystalline Sn-doped In_2O_3 films determined by in situ two-dimensional X-ray diffraction measurements [J] . Furubayashi Yutaka, Kobayashi Shintaro, Maehara Makoto, Annales de l'I.H.P . 2020,第6期

机译：通过原位二维X射线衍射测量确定的非晶indcrystalline Sn掺杂的insucals incolicate命令的演变
3. Phase Transitions and Formation of a Monolayer-Type Structure in Thin Oligothiophene Films: Exploration with a Combined In Situ X-ray Diffraction and Electrical Measurements [J] . Eduard Mikayelyan, Linda Grodd, Viacheslau Ksianzau, Nanoscale Research Letters . 2019,第1期

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4. Phase transformation of /spl beta/-FeSi/sub 2/-based alloys under in-situ high-temperature and high-pressure X-ray diffraction measurements [C] . Chen, H.Y., Zhao, . 2005

机译：/ spl beta / -FeSi / sub 2 /基合金在原位高温和高压X射线衍射测量下的相变
5. High-temperature phase transitions in cesium dihydrogen phosphate under ambient and high-pressure conditions: A synchrotron x-ray diffraction study [D] . Hermosillo, Juan Daniel 2006

机译：环境和高压条件下磷酸铯磷酸铯的高温相转变：同步X射线衍射研究
6. Phase Transitions and Formation of a Monolayer-Type Structure in Thin Oligothiophene Films: Exploration with a Combined In Situ X-ray Diffraction and Electrical Measurements [O] . Eduard Mikayelyan, Linda Grodd, Viachaslau Ksianzou, 2019

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7. In situ x-ray diffraction measurements of the c/a ratio in the high-pressure epsilon phase of shock-compressed polycrystalline iron [O] . Hawreliak, JA, El-Dasher, B, Lorenzana, H, 2011

机译：冲击压缩多晶铁的高压ε相中c / a比值的原位x射线衍射测量

In situ x-ray diffraction measurements of the c/a ratio in the high-pressure ∈ phase of shock-compressed polycrystalline iron

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