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| Staff Scientist |
| NAME |
Hyunchae Cynn |
| PHONE |
(925)422-3432 |
| FAX |
(925)423-2442 |
| E-MAIL |
Cynn1@llnl.gov |
| ADDRESS |
Lawrence Livermore National Lab
7000 East Avenue, L-041
Livermore, CA 94550 |
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I like to apply new experimental capabilities
to measure physical and chemical properties of materials at
extreme conditions using a diamond anvil cell. Recent advances
in synchrotron radiation technology have brought to the DAC
community experimental capabilities beyond the usual P,T conditions
to examine new physical, chemical, thermodynamic, and mechanical
properties of materials at extreme conditions.
I spend most of my research effort collecting
x-ray diffraction at various synchrotron facilities (SSRL,
NSLS, ESRF, APS, Spring-8) to understand material behavior
at high pressure and high temperature. The types of material
that I am interested in studying range from simple molecular
solids, metals and alloys to complicated silicates. |
H. Cynn, J.E. Klepeis, C.S. Yoo, D.A. Young, "Osmium
has the lowest experimentally determined compressibility",
Phys. Rev. Lett. 88, 135701 (2002)
[pdf]
H. Cynn, C.S. Yoo, B.J. Baer, V. Iota, A.K. McMahan, M. Nicol,
S. Carson, "Martensitic fcc-to-hcp transformation of xenon
at high pressure", Phys. Rev. Lett. 86,
4552 (2001) [pdf]
H. Cynn, C.S. Yoo, S.A. Sheffield, "Phase transition and
decomposition of 90% hydrogen peroxide at high pressures",
J. Chem. Phys. 110, 6836 (1999) [pdf]
H. Cynn, C.S. Yoo, "Equation of State of Tantalum to 174
GPa", Phys. Rev. B 59, 8526 (1999)
[pdf]
H. Cynn, O.L. Anderson, D.G. Isaak, and M. Nicol, "Grüneisen
ratios of MgO from the calculation of entropy", J.
Phys. Chem. 99, 7813-7818 (1995)
H. Cynn and A.M. Hofmeister, "High pressure IR spectra
of lattice modes and OH vibrations in Fe-bearing wadsleyite",
J. Geophy. Res. 99, 17717-17727 (1994)
H. Cynn, O.L. Anderson, and M. Nicol, "Effects of cation
disordering in a natural MgAl2O4 spinel observed by rectangular
parallelepiped ultrasonic resonance and Raman measurements",
Pure and Appl. Geophys. 141, 415-444
(1993) |
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