Low-energy electric dipole response in 120Sn
| Autor: | Krumbholz, A. M., von Neumann-Cosel, P., Hashimoto, T., Tamii, A., Adachi, T., Bertulani, C. A., Fujita, H., Fujita, Y., Ganioglu, E., Hatanaka, K., Iwamoto, C., Kawabata, T., Khai, N. T., Krugmann, A., Martin, D., Matsubara, H., Neveling, R., Okamura, H., Ong, H. J., Poltoratska, I., Ponomarev, V. Yu., Richter, A., Sakaguchi, H., Shimbara, Y., Shimizu, Y., Simonis, J., Smit, F. D., Susoy, G., Thies, J. H., Suzuki, T., Yosoi, M., Zenihiro, J. |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Phys. Lett. B 744, 7 (2015) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2015.03.023 |
| Popis: | 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. Comment: 7 pages, 6 figures |
| Databáze: | arXiv |
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