Title: Completely quantized theory of homogeneous line broadening in long-lived nuclear states
Authors: Odeurs, Joseph
Issue Date: Apr-1996
Publisher: American physical soc
Series Title: Physical review b vol:53 issue:14 pages:9059-9063
Abstract: Long-lived nuclei incorporated in a lattice are submitted to fluctuating interactions exerted on them by the lattice atoms surrounding them. Two models are considered: Gaussian Markovian processes and Gaussian broadband fluctuations. The frequency spectrum of the electromagnetic radiation emitted by nuclei is the Fourier transform of the first-order correlation function, which can be expressed solely in terms of two-time and one-time averages of nuclear operators. The one-time averages, which depend on the fluctuations, can be calculated. Using the quantum regression theorem, the two-time averages are calculated as well and hence the frequency spectrum. For both models this spectrum is Lorentzian with width equal to the sum of the natural Linewidth and a lattice-induced width.
ISSN: 0163-1829
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Development cooperation

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