Abstract
A measurement of the decay in time of nuclei excited by an intense short laser pulse of energy E 0 yields the Fourier transform of the autocorrelation function of the associated scattering matrix. We determine the optimal length (in time) of the pulse and evaluate the time-decay function using random-matrix theory. That function is shown to contain information not otherwise available. We approximate that function in a manner that is useful for the analysis of data. For E 0 below the threshold energy E n of the first neutron channel, the time-decay function is exponential in time t while it is the product of an exponential and a power in t for E 0 > E n . The comparison of the measured decay functions in both energy domains yields an unambiguous and novel test of random-matrix theory in nuclei.
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