Low-energy electric dipole response in Sn-120
Author
Sakaguchi, H.
Matsubara, H.
Neveling, R.
Okamura, H.
Ong, H. J.
POLTORATSKA, I.
PONOMAREV, V. Yu.
RICHTER, A.
Shimbara, Y.
Shimizu, Y.
SIMONIS, J.
SMIT, F. D.
THIES, J. H.
Suzuki, T.
Yosoi, M.
Zenihiro, J.
KRUMBHOLZ, M.
VON NEUMANN-COSEL, P.
Hashimoto, T.
Tamii, A.
Adachi, T.
BERTULANI, C. A.
Fujita, H.
Fujita, Y.
Hatanaka, K.
Iwamoto, C.
Kawabata, T.
Khai, N. T.
Ganioglu, Ela
Susoy, G.
KRUGMANN, A.
MARTIN, D.
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Show full item recordAbstract
The electric dipole strength distribution in Sn-120 has been extracted from proton inelastic scattering experiments at E-p = 295 MeV and at forward angles including 0 degrees. It differs from the results of a Sn-120(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. (C) 2015 The Authors. Published by Elsevier B.V.
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