Low-energy electric dipole response in 120Sn
Nuclear Experiment
2015-03-31 v3 Nuclear Theory
Abstract
The electric dipole strength in 120Sn has been extracted from proton inelastic scattering experiments at E_p = 295 MeV and at forward angles including 0 degree. Below neutron threshoild it differs from the results of a 120Sn(gamma,gamma') experiment and peaks at an excitation energy of 8.3 MeV. The total strength corresponds to 2.3(2)% of the energy-weighted sum rule and is more than three times larger than what is observed with the (gamma,gamma') reaction. This implies a strong fragmentation of the E1 strength and/or small ground state branching ratios of the excited 1- states.
Keywords
Cite
@article{arxiv.1502.04305,
title = {Low-energy electric dipole response in 120Sn},
author = {A. M. Krumbholz and P. von Neumann-Cosel and T. Hashimoto and A. Tamii and T. Adachi and C. A. Bertulani and H. Fujita and Y. Fujita and E. Ganioglu and K. Hatanaka and C. Iwamoto and T. Kawabata and N. T. Khai and A. Krugmann and D. Martin and H. Matsubara and R. Neveling and H. Okamura and H. J. Ong and I. Poltoratska and V. Yu. Ponomarev and A. Richter and H. Sakaguchi and Y. Shimbara and Y. Shimizu and J. Simonis and F. D. Smit and G. Susoy and J. H. Thies and T. Suzuki and M. Yosoi and J. Zenihiro},
journal= {arXiv preprint arXiv:1502.04305},
year = {2015}
}
Comments
7 pages, 6 figures