1985 – 1989

1989

57. Mao, H. K., Y. Wu, R. J. Hemley, L. C. Chen, J. F. Shu, and L. W. Finger, X-ray diffraction to 302 Gigapascals: High-pressure crystal structure of cesium iodide, Science, 246, 649-651 (1989). PDF

56. Mao, H. K., and R. J. Hemley, Optical studies of hydrogen above 200 gigapascals: Evidence for metallization by band overlap, Science, 244, 1462-1465 (1989).

55. Mao, H. K., J. Hemley, J. F. Shu, L. C. Chen, A. P. Jephcoat, Y. Wu, and W. A. Bassett, The effect of pressure, temperature, and composition on the lattice parameters and density of (Fe,Mg)SiO3-perovskites to 30 GPa, Annual Report of the Director of the Geophysical Laboratory, Carnegie Institution of Washington, 1988-1989, Geophysical Laboratory, Washington, D.C., pp. 82-89 (1989).

54. Mao, H. K., L. C. Chen, R. J. Hemley, A. P. Jephcoat, Y. Wu, and W. A. Bassett, Stability and equation of state of CaSiO3 perovskite to 134 GPa, J. Geophys. Res., 94, 17889-17894 (1989).

53. Kubicki, J. D., and R. J. Hemley, Spectroscopic evidence for a new high-pressure magnesium silicate phase, Annual Report of the Director of the Geophysical Laboratory, Carnegie Institution of Washington, 1988-1989, Geophysical Laboratory, Washington, D.C., pp. 91-94 (1989).

52. Hemley, R. J., C. S. Zha, A. P. Jephcoat, H. K. Mao, L. W. Finger, and D. E. Cox, X-ray diffraction and equation of state of solid neon to 110 GPa, Phys. Rev. B, 39, 11820-11827 (1989). PDF

51. Hemley, R. J., and H. K. Mao, New optical transitions in type Ia diamonds at very high stresses, >Annual Report of the Director of the Geophysical Laboratory, Carnegie Institution of Washington, 1988-1989, Geophysical Laboratory, Washington, D.C., pp. 105-108 (1989).

50. Hemley, R. J., and H. K. Mao, Isotope effects in dense solid hydrogen: Phase transition in deuterium at 190 ± 20 GPa, Phys. Rev. Lett., 63, 1393-1395 (1989). PDF

49. Hemley, R. J., A. P. Jephcoat, C. S. Zha, H. K. Mao, L. W. Finger and D. E. Cox, Equation of state of solid neon from x-ray diffraction measurements to 110 GPa, in High Pressure Science and Technology, Proceedings of the XIth AIRAPT Conference (eds. N. V. Novikov and Chistyakov, Y. M.) 211-217 (Naukova Dumka, Kiev, 1989).

48. Hemley, R. J., R. E. Cohen, A. Yeganeh-Haeri, H. K. Mao, D. J. Weidner and E. Ito, Raman spectroscopy and lattice dynamics of MgSiO3 perovskite at high pressure, in Perovskite: A Structure of Great Interest to Geophysics and Materials Science (eds. A. Navrotsky and Weidner, D. J.) 35-53 (American Geophysical

47. Hemley, R. J., L. C. Chen, and H. K. Mao, New transformations between crystalline and amorphous ice, Nature, 338, 638-640 (1989).

46. Hazen, R. M., L. W. Finger, R. J. Hemley, and H. K. Mao, High-pressure crystal chemistry and amorphization of alpha-quartz, Solid State Comm., 72, 507-511 (1989). PDF

45. Finger, L. W., J. Ko, R. M. Hazen, T. Gasparik, R. J. Hemley, C. T. Prewitt, and D. J. Weidner, Crystal chemistry of phase B and an anhydrous analogue: implications for water storage in the upper mantle, Nature, 341, 140-142 (1989).

44. Finger, L. W., R. M. Hazen, and R. J. Hemley, BaCuSi2O6: a new cyclosilicate with four-membered tetrahedral rings, Am. Mineral., 74, 952-955 (1989).

43. Chen, L. C., H. K. Mao, and R. J. Hemley, Compression and polymorphism of CaSiO3 at high pressures and temperatures, Annual Report of the Director of the Geophysical Laboratory, Carnegie Institution of Washington, 1988-1989, Geophysical Laboratory, Washington, D.C., pp. 94-98 (1989).

1988

42. Stevenson, D. J., R. J. Hemley and E. Knittle, Metallization of non-conductors, in Frontiers in Mineral Physics, Chap. 22 (eds. W. A. Bassett, S. J. Mackwell and P. F. McMillan) American Geophysical Union, Washington, D.C., pp. 97-99 (1988).

41. Mao, H. K., A. P. Jephcoat, R. J. Hemley, L. W. Finger, C. S. Zha, R. M. Hazen, and D. E. Cox, Synchrotron x-ray diffraction measurements of single-crystal hydrogen to 26.5 GPa, Science, 239, 1131-1134 (1988). PDF

40. Mao, H. K., R. J. Hemley, Y. Wu, A. P. Jephcoat, L. W. Finger, C. S. Zha, and W. A. Bassett, High-pressure phase diagram and equation of state of solid helium from single-crystal x-ray diffraction to 23.3 GPa, Phys. Rev. Lett., 60, 2649-2652 (1988). PDF

39. Kubicki, J. D., and R. J. Hemley, In-situ high-pressure Raman spectra of silicate glasses, Annual Report of the Director of the Geophysical Laboratory, Carnegie Institution of Washington, 1987-1988, Geophysical Laboratory, Washington, D. C., 53-56 (1988).

38. Jephcoat, A. P., R. J. Hemley, H. K. Mao, R. E. Cohen, and M. J. Mehl, Raman spectroscopy and theoretical modelling of BeO at high pressure, Phys. Rev. B, 37, 4727-4734 (1988). PDF

37. Jephcoat, A. P., R. J. Hemley, and H. K. Mao, X-ray diffraction of ruby (Al2O3:Cr3+) to 175 GPa, Physica B, 150, 115-121 (1988).

36. Hemley, R. J., and R. F. Porter, Raman spectroscopy at ultrahigh pressures, Scripta Metallurgica, 22, 139-144 (1988).

35. Hemley, R. J., P. F. McMillan and G. H. Wolf, Optical spectroscopic techniques, in Frontiers in Mineral Physics, Ch. 13, (eds. W. A. Bassett, S. J. Mackwell and P. F. McMillan) American Geophysical Union, Washington, D.C., pp. 51-99 (1988).

34. Hemley, R. J., and H. K. Mao, Phase transition in solid molecular hydrogen at ultrahigh pressures, Phys. Rev. Lett., 61, 857-860 (1988). PDF

33. Hemley, R. J., A. C. Lasaga, V. Vaida, and M. Karplus, Theoretical analysis of the 11Bu1(1B1+)♦11Ag-(1A11) transition of trans and cis 1,3,5-hexatriene, J. Phys. Chem., 92, 945-954 (1988). PDF

32. Hemley, R. J., A. P. Jephcoat, H. K. Mao, L. C. Ming, and M. H. Manghnani, Pressure-induced amorphization of crystalline silica, Nature, 334, 52-54 (1988).

31. Hemley, R. J., High-pressure studies of planetary gases and liquids, Eos Trans. Am. Geophys. Union, 69, 159-160 (1988).

1987

30. Mao, H. K., R. J. Hemley, and E. C. T. Chao, The application of micro-Raman spectroscopy to analysis and identification of minerals in thin section, Scanning Microscopy, 1, 495-501 (1987).

29. Jephcoat, A. P., H. K. Mao, L. W. Finger, D. E. Cox, R. J. Hemley, and C. S. Zha, Pressure-induced structural phase transitions in solid xenon, Phys. Rev. Lett., 59, 2670-2673 (1987). PDF

28. Hemley, R. J., and H. K. Mao, Single-crystal micro-Raman spectroscopy of phases in the Y-Ba-Cu-O superconductor, Phys. Rev. Lett., 58, 2340-2342 (1987). PDF

27. Hemley, R. J., A. P. Jephcoat, H. K. Mao, C. S. Zha, L. W. Finger, and D. E. Cox, Static compression of H2O-ice to 128 GPa (1.28 Mbar), Nature, 330, 737-740 (1987).

26. Hemley, R. J., M. D. Jackson, and R. G. Gordon, Theoretical study of the structure, lattice dynamics, and equations of state of perovskite-type MgSiO3 and CaSiO3, Phys. Chem. Minerals, 14, 2-12 (1987).

25. Hemley, R. J., P. M. Bell, and H. K. Mao, Laser techniques in high-pressure geophysics, Science, 237, 605-612 (1987). PDF

24. Hemley, R.J., Pressure dependence of Raman spectra of SiO2 polymorphs: α-quartz, coesite, and stishovite, in High-Pressure Research in Mineral Physics (eds. M.H. Manghnani and Y. Syono), pp. 347-359, Terra Scientific, Tokyo/American Geophysical Union, Washington, D.C. (1987).

23. Hazen, R. M., H. K. Mao, L. W. Finger, and R. J. Hemley, Single-crystal x-ray diffraction of n-H2 at high pressure, Phys. Rev. B, 36, 3944-3947 (1987). PDF

1986

22. Mehl, M. J., R. J. Hemley, and L. L. Boyer, Potential-induced breathing model for the elastic moduli and high-pressure behavior of the cubic alkaline-earth oxides, Phys. Rev. B, 33, 8685-8696 (1986). PDF

21. Hemley, R. J., H. K. Mao, P. M. Bell, and S. Akimoto, Lattice vibrations of high-pressure SiO2 phases: Raman spectrum of synthetic stishovite, Proceedings of the Xth AIRAPT International High Pressure Conference, Amsterdam, July 8-11, 1985, Physica B, 139-140, 455-457 (1986).

20. Hemley, R. J., H. K. Mao, and E. C. T. Chao, Raman spectrum of natural and synthetic stishovite, Phys. Chem. Minerals, 13, 285-290 (1986).

19. Hemley, R. J., H. K. Mao, P. M. Bell, and B. O. Mysen, Raman spectroscopy of SiO2 glass at high pressure, Phys. Rev. Lett., 57, 747-750 (1986). PDF

18. Hemley, R. J., B. R. Brooks, and M. Karplus, Theoretical study of the ground-state vibrations of the linear polyenes, J. Chem. Phys., 85, 6550-6564 (1986). PDF

17. Bell, P. M., H. K. Mao, and R. J. Hemley, Observations of solid H2, D2, and N2 at pressures around 1.5 megabar at 25oC, Proceedings of the Xth AIRAPT International High Pressure Conference, Amsterdam, July 8-11, 1985, Physica B, 139-140, 16-20 (1986).

1985

16. Mao, H. K., P. M. Bell, and R. J. Hemley, Ultrahigh pressures: optical observations and Raman measurements of hydrogen and deuterium to 1.47 Mbar, Phys. Rev. Lett., 55, 99-102 (1985). PDF

15. Hemley, R. J., D. G. Leopold, V. Vaida, and M. Karplus, The singlet states of styrene: Theoretical vibrational analysis of the ultraviolet spectrum, J. Chem. Phys., 82, 5379-5397 (1985). PDF

14. Hemley, R. J., M. D. Jackson, and R. G. Gordon, First-principles theory for the equations of state of minerals to high pressures and temperatures: application to MgO, Geophys. Res. Lett., 12, 247-250 (1985).

13. Hemley, R. J., and R. G. Gordon, Theoretical study of solid NaF and NaCl at high pressures and temperatures, J. Geophys. Res., 90, 7803-7813 (1985).

12. Hemley, R. J., U. Dinur, V. Vaida, and M. Karplus, Theoretical study of the ground and excited singlet states of styrene, J. Am. Chem. Soc., 107, 836-844 (1985). PDF