Soft spin dipole giant resonances in 40Ca
Nuclear Experiment
2015-06-16 v1
Abstract
High resolution experimental data has been obtained for the 40,42,44,48Ca(3He,t)Sc charge exchange reaction at 420 MeV beam energy, which favors the spin-isospin excitations. The measured angular distributions were analyzed for each state separately, and the relative spin dipole strength has been extracted for the first time. The low-lying spin-dipole strength distribution in 40Sc shows some interesting periodic gross feature. It resembles to a soft, dumped multi-phonon vibrational band with = 1.8 MeV, which might be associated to pairing vibrations around Ca.
Cite
@article{arxiv.1308.3566,
title = {Soft spin dipole giant resonances in 40Ca},
author = {L. Stuhl and A. Krasznahorkay and M. Csatlos and T. Marketin and E. Litvinova and T. Adachi and A. Algora and J. Daeven and E. Estevez and H. Fujita and Y. Fujita and C. Guess and J. Gulyas and K. Hatanaka and K. Hirota and H. J. Ong and D. Ishikawa and H. Matsubara and R. Meharchand and F. Molina and H. Okamura and G. Perdikakis and B. Rubio and C. Scholl and T. Suzuki and G. Susoy and A. Tamii and J. Thies and R. Zegers and J. Zenihiro},
journal= {arXiv preprint arXiv:1308.3566},
year = {2015}
}