Nuclear Excitation by a Strong Short Laser Pulse

Weidenmüller, Hans A.

doi:10.1063/1.3584065

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Nuclear Excitation by a Strong Short Laser Pulse

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Weidenmüller, Hans A.
Prof. Hans A. Weidenmüller, Emeriti, MPI for Nuclear Physics, Max Planck Society;

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http://dx.doi.org/10.1063/1.3584065
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Weidenmüller, H. A. (2011). Nuclear Excitation by a Strong Short Laser Pulse. American Institute of Physics Conference Proceedings, 1355: 187. doi:10.1063/1.3584065.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-72F5-E

Abstract

We derive the conditions on laser energy and photon number under which a short strong laser pulse excites a collective nuclear mode. We use the Giant Dipole Resonance as a representative example, and a random-matrix description of the fine-structure states and perturbation theory as tools. We identify the relevant observable as the nuclear time-decay function. That function is the Fourier transform of the autocorrelation function of the associated scattering matrix and contains information not otherwise available. We evaluate that function in specific cases and show that it may deviate significantly from an exponential.