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Subrata Ghose Professor Office: ATG-162    (Mailing Address) Phone: 206-543-7378 Fax: 206-543-3836(shared) E-Mail: ghose* * to send email, replace * with @ess.washington.edu

Areas of Interest:
Mineral Physics

Research Groups:
Mineral Physics
Petrology/Mineralogy/Geochemistry

Education:
Ph.D., Mineralogy and Crystallography, University of Chicago, 1959
M.S., Mineralogy and Crystallography, University of Chicago, 1959
M.Sc., Geology, University of Calcutta, 1955

Background and Current Research:
Subrata Ghose received the M.Sc. degree in geology from the University of Calcutta in 1955 and both M.S. and Ph.D. degrees in mineralogy and crystallography from the University of Chicago in 1959. He gained considerable research experience at several institutions, including: the Crystallography Laboratory at the University of Pittsburgh; Institut für Kristallographie und Petrographie, E.T.H., Zürich; Argonne National Laboratory; and Planetology Branch, Goddard Space Flight Center, NASA, Greenbelt, Maryland. He was on the visiting faculty of the University of California, Berkeley, in 1971-72. Ghose came to the University of Washington in 1972 and was a visiting professor at the Université Médicale et Scientifique de Grenoble, France in 1980-81; the University of Kyoto, Japan in 1986; and Universities of Bayreuth and Munich in 1990. He was the Principal Investigator of Lunar Samples, NASA from 1971 to 1978. He received the Senior U.S. Scientist Award of the Alexander von Humboldt Foundation in 1990. Currently Ghose serves as scientific collaborator at Argonne, Brookhaven and Oak Ridge National Laboratories, and Institut Laue-Langevin, Grenoble, France. At the University of Washington Ghose holds adjunct professor appointments in the Geophysics Program and Materials Science and Engineering.

Professor Ghose's current research interests lie in the field of mineral physics, including: (1) lattice dynamics, phase transition and physical and thermodynamic properties of minerals at high pressure and high temperature using x-ray and neutron diffraction, electron microscopy, inelastic neutron scattering, IR and Raman spectroscopy; (2) magnetic phase transitions and thermodynamic behavior of minerals using magnetic susceptibility and magnetization measurements, Mössbauer resonance spectroscopy and low temperature neutron diffraction; (3) thermodynamics and kinetics of cation order-disorder in ferromagnesian silicates; and (4) silicate melts at high temperature and pressure using in situ Raman- and x-ray scattering and molecular dynamics simulations.

Selected Publications:
Rao, K. R., Chaplot, S. L., Choudhury, N., Ghose, S., Hastings, J. M., Corliss, L. M., and Price, D. L., 1988, Lattice dynamics and inelastic neutron scattering from forsterite, Mg2SiO4: Phonon dispersion relation, density of states and specific heat, Physics and Chemistry of Minerals, v. 16, p. 83-97.

Ghose, S., Tsukimura, K., and Hatch, D. M., 1989, Phase transitions in ilvaite, a mixed-valence iron silicate II. A high temperature single crystal x-ray diffraction study and Landau theory of the monoclinic to orthorhombic phase transition induced by charge delocalization, Physics and Chemistry of Minerals, v. 16, p. 483-496.

Van Tendeloo, G., Ghose, S., and Amelinckx, S., 1989, A dynamical model for the phase transition in anorthite, CaAl2Si2O8: I. Evidence from electron microscopy, Physics and Chemistry of Minerals, v. 16, p. 311-319.

Hatch, D. M. and Ghose, S., 1989, A dynamical model for the phase transition in anorthite. II. Order parameter treatment and Landau theory, Physics and Chemistry of Minerals, v. 16, p. 614-620.

Hatch, D. M. and Ghose, S., 1989, Symmetry analysis of the phase transition and twinning in MgSiO3 garnet: Implications to mantle mineralogy, American Mineralogist, v. 74, p. 1221-1224.

Ghose, S., Hewat, A. W., and Pinkney, M., 1990, A powder neutron diffraction study of magnetic phase transitions and spin frustration in ilvaite, a mixed-valence iron silicate, Solid State Communications, v. 74, p. 413-418.

Hatch, D. M. and Ghose, S., 1991, The alpha-beta phase transition in cristobalite, SiO2. Symmetry analysis, domain structure and the dynamical nature of the beta-phase. Physics and Chemistry of Minerals, v. 17, p. 554-562.

Ghose, S., Hastings, J. M., Choudhury, N., Chaplot, S. L., and Rao, K. R., 1991, Phonon dispersion relation in fayalite, Fe2SiO4, Physica B, v. 174, p. 83-86.

Ghose, S., Choudhury, N., Chaplot, S. L., and Rao, K. R., 1992, Phonon density of states and thermodynamic properties of minerals. In: Thermodynamic Data Systematics and Estimation, Saxena, S.K., ed., Springer-Verlag, New York, p. 283-314.

Hess, N. J., Ghose, S., and Exarhos, G. J., 1992, Raman spectroscopic studies at simultaneous high pressure and temperature of the phase relations of CaCO3 and the lattice dynamics of the calcite - CaCO3(II) phase transition. Recent Trends in High Pressure Research: Proceedings of the XIII AIRAPT International Conference, Bangalore, India, Singh, A.K., ed., p. 236-241.

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