Isoscalar giant monopole resonance in Sn isotopes using a quantum molecular dynamics model
Abstract
The isoscalar giant monopole resonance (ISGMR) in Sn isotopes and other nuclei is investigated in the framework of the isospin-dependent quantum molecular dynamics (IQMD) model. The spectrum of GMR is calculated by taking the root-mean-square (RMS) radius of a nucleus as its monopole moment. The peak energy, the full width at half maximum (FWHM), and the strength of GMR extracted by a Gaussian fit to the spectrum have been studied. The GMR peak energies for Sn isotopes from the calculations using a mass-number dependent Gaussian wave-packet width for nucleons are found to be overestimated and show a weak dependence on the mass number compared with the experimental data. However, it is found that experimental data of the GMR peak energies for Ni, Zr, and Pb as well as Sn isotopes can be nicely reproduced after taking into account the isospin dependence in isotope chains in addition to the mass number dependence of for nucleons in the IQMD model calculation.
Keywords
Cite
@article{arxiv.1308.1200,
title = {Isoscalar giant monopole resonance in Sn isotopes using a quantum molecular dynamics model},
author = {C. Tao and Y. G. Ma and G. Q. Zhang and X. G. Cao and D. Q. Fang and H. W. Wang and J. Xu},
journal= {arXiv preprint arXiv:1308.1200},
year = {2014}
}
Comments
9 pages, 12 figures; accepted by Phys. Rev. C