Description of nuclear photoexcitation by Lorentzian expressions for electric dipole photon strength function
Abstract
The description of photoabsorption cross-sections of cold nuclei by closed-form Lorentzian models of photon strength functions for photoexcitation by electric dipole gamma-rays is considered. Systematics of the GDR parameters are given and input parameters of different analytical models are discussed The experimental data are compared with theoretical calculations for even-even nuclei using criteria of minimum of both least-square value and root-mean-square deviation factor. Simple extensions of the models with energy-dependent widths to high gamma-ray energies 30MeV which hold the energy-weighted sum rule for E1 gamma-transitions in good approximation are proposed and tested.
Keywords
Cite
@article{arxiv.1911.12134,
title = {Description of nuclear photoexcitation by Lorentzian expressions for electric dipole photon strength function},
author = {Vladimir Plujko and Oleksandr Gorbachenko and Kateryna Solodovnyk},
journal= {arXiv preprint arXiv:1911.12134},
year = {2019}
}
Comments
12 pages, 9 figures, 3 tables. This is pre-print of an article published in The European Physical Journal A. The final authenticated version is available online at: https://doi.org/10.1140/epja/i2019-12899-6