Soft spin-dipole resonances in 40Ca

Author
Suzuki, T.
Ong, H. J.
Ishikawa, D.
Matsubara, H.
Meharchand, R.
Molina, F.
Okamura, H.
Perdikakis, G.
Rubio, B.
Scholl, C.
Susoy, Gülfem
Stuhl, L.
Krasznahorkay, A.
Csatlos, M.
Marketin, T.
Litvinova, E.
Adachi, T.
Zenihiro, J.
Zegers, R.
Thies, J.
Tamii, A.
Algora, A.
Daeven, J.
Estevez, E.
Fujita, H.
Fujita, Y.
Guess, C.
Gulyas, J.
Hatanaka, K.
Hirota, K.
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Abstract
High resolution experimental data has been obtained for the Ca-40,Ca-42,Ca-44,Ca-48(He-3,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 Sc-40 shows some interesting periodic gross feature. It resembles to a soft, damped multi-phonon vibrational band with (h) over bar omega= 1.8 MeV, which might be associated to pairing vibrations around Ca-40.
URI
http://hdl.handle.net/20.500.12627/81718
https://doi.org/10.1088/1742-6596/381/1/012096
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84867941596&origin=inward
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