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• Tom Allison
• 275 Birge Hall
• (510) 643-1831
• Curriculum Vitae

With the advent of more intense x-ray sources, we are beginning to reach intensities in which non-linear effects will become important in the x-ray regime. I wish to explore this new regime of physics and discover novel methods of manipulating the interaction of intense x-ray beams with matter to study ultrafast phenomena. I am also interested in plasma physics, chaos theory, and phase transitions. I obtained my B.S. in Applied Physics from Cornell University in 2003.

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• Alfredo Correa
• Lawrence Livermore
• National Lab
• (925) 422-3520
• Publications

My work is now focused on applying first principles and computational techniques to calculate structural and electronic properties of Carbon in its different high pressure phases. I am using molecular dynamic simulations combined with density functional theory. We use simulations to help in the interpretation of experimental results on the melting of carbon. The goal of the project is to have an accurate phase diagram of carbon, including the computation of its thermodynamics and electronic properties.

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• Michael Greaves
• 275 Birge Hall
• (510) 643-1831

I received a BS and MS in Electrical and Computer Engineering from Carnegie Mellon University in Pittsburgh, PA. I am currently a PhD student in Applied Science and Technology (Applied Physics) at UCB. I will be working at LBL on ultrafast streak camera development and ultrafast measurements. My other research interests include X and gamma-ray detector systems for medical physics. When not in the lab, I can often be found running, hiking, biking, or tap dancing.

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• Hae Ja Lee
• 275 Birge Hall
• (510) 643-1831
• Curriculum Vitae

My research interests are in study of electronic and structural changes using ultrafast x-ray diffraction, absorption, spectroscopy. This involves condensed matter, warm dense matter, and the plasma regime. Dynamics of laser-pulse-excited material will be observed through a synchrotron x-ray source with sub-picosecond pulses. In addition, I will also perform Thomson scattering on high temperature dense plasmas for the understanding of the mechanism and the interaction of the atoms/ions. I received my BS in Physics from KAIST and obtained MS and PhD in Physics from Seoul National University, Korea.

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• Chris Weber
• Building 2,
  Room 332, LBL
• (510) 486-6778
• Curriculum Vitae

At beamline 6 of the Advanced Light Source, an amplified femtosecond laser system is synchronized with soft- and hard-x-ray synchrotron radiation for pump-probe experiments. Our experiments probe materials with mean energies of a few eV: the "warm, dense matter" (WDM) regime, which lies between those of condensed matter and strongly-coupled plasmas. Material properties in this regime are largely unknown; and because many experiments creating WDM create a short-lived, nonequilibrium state, probing the ultrafast dynamics of this state is particularly important. We create WDM from thin foils through the absorption of a short pulse of light containing several milijoules of energy. This laser pulse is overlapped at the foil in time and space with a broadband x-ray pulse. The transmitted x-rays are dispersed for ~1 eV resolution and swept to picosecond resolution by an x-ray streak camera, giving a near-edge x-ray absorption spectrum of the WDM before it melts or ablates.

I did my Ph.D. work in condensed-matter physics at UC Berkeley, in the group of Joe Orenstein. There I developed and used ultrafast transient-spin-grating spectroscopy to study spin propagation and spin-space correlations in two-dimensional electron gases in GaAs quantum wells. The length scales were microns, and the time-scales were picoseconds. For details and publications, please see my CV.