中国物理B ›› 2017, Vol. 26 ›› Issue (11): 115205-115205.doi: 10.1088/1674-1056/26/11/115205

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Measurement of iron characteristics under ramp compression

H G Wei(魏会冈), E Brambrink, N Amadou, A Benuzzi-Mounaix, A Ravasio, G Morard, F Guyot, T de Rességuier, N Ozaki, K Miyanishi, G Zhao(赵刚), M Koenig   

  1. 1. Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    2. LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau cedex, France;
    3. Sorbonne Universités, UPMC Univ Paris 06, CNRS, laboratoire d'utilisation des lasers intenses(LULI), place Jussieu, 75252 Paris cedex 05, France;
    4. Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie(IMPMC), Sorbonne Universités-UPMC, UMR CNRS 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, F-75005 Paris, France;
    5. Institut Pprime, CNRS, ENSMA, Univ. Poitiers, 1 avenue Clément Ader, Futuroscope Cedex, 86961 France;
    6. Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871 Japan;
    7. Département de Physique, Université Abdou Moumouni de Niamey, BP. 10662 Niamey, Niger
  • 收稿日期:2017-04-20 修回日期:2017-08-02 出版日期:2017-11-05 发布日期:2017-11-05
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2013CBA01503) and the National Natural Science Foundation of China (Grant No. 11103040).

Measurement of iron characteristics under ramp compression

H G Wei(魏会冈)1,2,3, E Brambrink2,3, N Amadou2,3,7, A Benuzzi-Mounaix2,3, A Ravasio2,3, G Morard4, F Guyot4, T de Rességuier5, N Ozaki6, K Miyanishi6, G Zhao(赵刚)1, M Koenig2,3   

  1. 1. Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    2. LULI-CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, F-91128 Palaiseau cedex, France;
    3. Sorbonne Universités, UPMC Univ Paris 06, CNRS, laboratoire d'utilisation des lasers intenses(LULI), place Jussieu, 75252 Paris cedex 05, France;
    4. Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie(IMPMC), Sorbonne Universités-UPMC, UMR CNRS 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, F-75005 Paris, France;
    5. Institut Pprime, CNRS, ENSMA, Univ. Poitiers, 1 avenue Clément Ader, Futuroscope Cedex, 86961 France;
    6. Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871 Japan;
    7. Département de Physique, Université Abdou Moumouni de Niamey, BP. 10662 Niamey, Niger
  • Received:2017-04-20 Revised:2017-08-02 Online:2017-11-05 Published:2017-11-05
  • Contact: E Brambrink, G Zhao, M Koenig E-mail:erik.brambrink@polytechnique.edu;gzhao@bao.ac.cn;michel.koenig@polytechnique.edu
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2013CBA01503) and the National Natural Science Foundation of China (Grant No. 11103040).

摘要: Laser-driven ramp compression was used to investigate iron characteristics along the isentropic path. The iterative Lagrangian analysis method was employed to analyze the free surface velocity profiles in iron stepped target measured with two VISARs. The onset stress for the α to ε phase transformation was determined from the sudden change in the sound velocity and was found over-pressurized compared to the static and shock results. The derived stress (26 GPa) and strain rate (up to 108 s-1) are consistent with our previous experimental results. The stress-density relations were compared with those from previous ramp experiments and good agreements were found, which experimentally confirms the simulations, showing that iterative Lagrangian analysis can be applied to the ramp-compression data with weak shock.

关键词: isentropic compression, iron, phase transformation

Abstract: Laser-driven ramp compression was used to investigate iron characteristics along the isentropic path. The iterative Lagrangian analysis method was employed to analyze the free surface velocity profiles in iron stepped target measured with two VISARs. The onset stress for the α to ε phase transformation was determined from the sudden change in the sound velocity and was found over-pressurized compared to the static and shock results. The derived stress (26 GPa) and strain rate (up to 108 s-1) are consistent with our previous experimental results. The stress-density relations were compared with those from previous ramp experiments and good agreements were found, which experimentally confirms the simulations, showing that iterative Lagrangian analysis can be applied to the ramp-compression data with weak shock.

Key words: isentropic compression, iron, phase transformation

中图分类号:  (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))

  • 52.50.Jm
91.35.Cb (Models of interior structure)