Improvements and Testing Practical Expressions for Photon Strength Functions of E1 Gamma-Transitions
Nuclear Theory
2017-10-11 v2
Abstract
Analytical expression for the E1 photon strength functions (PSF) is modified to account for the low-energy enhancement due to nuclear structure effects (presence of low-energy state (LES)). A closed-form expression of the E1 PSF function includes response of two nuclear states: LES and giant diplole resonance (GDR). Expression for the nuclear response function on electromagnetic field is based on a model of excitation of two coupled damped states. These approach is tested for different data sets for spherical nuclei. Impact on PSF shape of coupling between LES and GDR excitations is considered.
Keywords
Cite
@article{arxiv.1611.00914,
title = {Improvements and Testing Practical Expressions for Photon Strength Functions of E1 Gamma-Transitions},
author = {Vladimir Plujko and Oleksandr Gorbachenko and Igor Kadenko and Kateryna Solodovnyk},
journal= {arXiv preprint arXiv:1611.00914},
year = {2017}
}
Comments
4 pages, 3 figures; 1st part of the report on International Conference on Nuclear Data for Science and Technology (ND2016), (changes in table 3)