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Exploring the Physical Properties of Matter in Extreme Conditions

APS Colloquium
Siegfried H. Glenzer, SLAC National Accelerator Laboratory
April 2, 2014 3:00PM to 4:00PM
Building 402
SLAC Distinguished Staff Scientist Siegfried H. Glenzer will present "Exploring the Physical Properties of Matter in Extreme Conditions" Wednesday, April 2, 2014, at 3 p.m., in the Building 402 Auditorium.


One of the great challenges of this century is to determine if nuclear fusion of hydrogen isotopes can be demonstrated in the laboratory and developed into an unlimited carbon-free energy source. Recent experiments to achieve a burning plasma state at the National Ignition Facility have led to the important finding that a successful demonstration will require much improved understanding of the microscopic physics of dense plasmas.

This talk will present a new high-energy-density science program at SLAC aimed at pursuing discovery- class science of fusion plasmas using the seeded LCLS beam with x-ray pulses with the highest peak brightness available today. This capability allows measurement of plasmons in shock-compressed matter. Specifically, high-density aluminum has been compressed up to a mass density of 7 g cm-3 with a free electron density of ne = 4.7 x 1 023 cm-3 and a temperature of 20,000 K.

In these conditions, we visualize the density and pressure evolution by resolving correlations up to distances comparable to the atomic size of aluminum. Our data allow direct determination of pressure for validating theoretical models for the thermodynamics at high pressure. We will show how LCLS data relate back to the design of ignition fusion experiments and will discuss future plans for the study of hot and dense matter.

About the Presenter

Siegfried H. Glenzer is the High-Energy-Density Science Program leader at the SLAC National Accelerator Laboratory. He joined SLAC as a distinguished scientist in 2013 to build a new discovery-class program exploring matter in extreme conditions using high-power lasers and the world-class Linac Coherent Light Source x-ray beam.

Before joining SLAC, he was Plasma Physics Group Leader at the Lawrence Livermore National Laboratory for 12 years, where he led the first inertial confinement fusion experiments on the National Ignition Facility. In 2004, he won the Alexander von Humboldt senior research prize, and spent a research and teaching year at the Universitat Rostock and at the Deutsche Elektronen Synchrotron (Germany).

Glenzer has authored and co-authored more than 350 publications in refereed journals, published the textbook Plasma Scattering of Electromagnetic Radiation, and is a fellow of the American Physical Society.

About the APS Colloquium Series

The monthly APS Colloquium Series benefits the Advanced Photon Source and Argonne communities by bringing distinguished scientists in all disciplines to lecture on topics of general interest.

Objectives include the cross-fertilization of research initiatives at various institutions, and the identification of possible uses of the Advanced Photon Source. The lecturer is also invited to spend an additional day visiting with scientists at Argonne.

For more information see the APS Colloquium page.