中国物理B ›› 2013, Vol. 22 ›› Issue (5): 56201-056201.doi: 10.1088/1674-1056/22/5/056201

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Ruby fluorescence pressure scale: Revisited

柳雷, 毕延, 徐济安   

  1. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy Of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2012-10-11 修回日期:2012-12-05 出版日期:2013-04-01 发布日期:2013-04-01
  • 基金资助:
    Project supported by the Defense Industrial Technology Development Program of China (Grant No. B1520110001), the National Natural Science Foundation of China (Grant No. 10874158), and the CAEP (Grant Nos. 2010A0101001 and 2008A0101001).

Ruby fluorescence pressure scale: Revisited

Liu Lei (柳雷), Bi Yan (毕延), Xu Ji-An (徐济安)   

  1. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy Of Engineering Physics, Mianyang 621900, China
  • Received:2012-10-11 Revised:2012-12-05 Online:2013-04-01 Published:2013-04-01
  • Contact: Bi Yan E-mail:biyan_cn@yahoo.com.cn
  • Supported by:
    Project supported by the Defense Industrial Technology Development Program of China (Grant No. B1520110001), the National Natural Science Foundation of China (Grant No. 10874158), and the CAEP (Grant Nos. 2010A0101001 and 2008A0101001).

摘要: Effect of non-hydrostatic stress on X-ray diffraction in diamond anvil cell (DAC) is studied. Pressure gradient in sample chamber leads to the broadening of the diffraction peaks, which increase with the hkl index of the crystal. It is found that the difference between the determined d-spacing compressive ratio d/d0 and the real d-spacing compressive ratio dr/d0 is determined by the yield stress of the pressure transmitting media (if used) and the shear modulus of the sample. On the basis of the corrected experiment data of Mao et al. (MXB86), which was used to calibrate the most widely used ruby fluorescence ruby scale, a new relationship of ruby fluorescence pressure scale is corrected, i.e., P=(1904/9.827)[(1+Δλ/λ0)9.827-1].

关键词: non-hydrostatic stress, ruby fluorescence pressure scale, diamond anvil cell

Abstract: Effect of non-hydrostatic stress on X-ray diffraction in diamond anvil cell (DAC) is studied. Pressure gradient in sample chamber leads to the broadening of the diffraction peaks, which increase with the hkl index of the crystal. It is found that the difference between the determined d-spacing compressive ratio d/d0 and the real d-spacing compressive ratio dr/d0 is determined by the yield stress of the pressure transmitting media (if used) and the shear modulus of the sample. On the basis of the corrected experiment data of Mao et al. (MXB86), which was used to calibrate the most widely used ruby fluorescence ruby scale, a new relationship of ruby fluorescence pressure scale is corrected, i.e., P=(1904/9.827)[(1+Δλ/λ0)9.827-1].

Key words: non-hydrostatic stress, ruby fluorescence pressure scale, diamond anvil cell

中图分类号:  (Elasticity)

  • 62.20.D-
64.30.Ef (Equations of state of pure metals and alloys) 07.35.+k (High-pressure apparatus; shock tubes; diamond anvil cells)