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About T-4



T-4 is the atomic and optical theory group in the Theoretical Division at Los Alamos National Laboratory. T-4 staff members and postdocs develop methods for and perform calculations of atomic structure, scattering cross sections, opacities, exotic atoms, and quantum optics, including effects of high energy density environments and interaction with external fields. Current efforts include the evaluation of opacities for a wide range of physical conditions, nonequilibrium plasma kinetics and spectroscopy, quantum molecular dynamics simulations, strong-field ionization and scattering, decoherence and chaos, quantum computing, and Bose-Einstein condensates / degenerate fermion gases. The Group provides interactive web sites for user calculations of opacities of mixtures and for calculations of atomic structure and cross sections. It also sponsors the Los Alamos Summer School for undergraduate students in physics.


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