Excitation of isovector spin-dipole resonances and neutron skin of nuclei

A. Krasznahorkay, M. Fujiwara, P. Van Aarle, H. Akimune, I. Daito, H. Fujimura, Y. Fujita, M. N. Harakeh, T. Inomata, J. Jänecke, S. Nakayama, A. Tamii, M. Tanaka, H. Toyokawa, W. Uijen, M. Yosoi

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The cross sections of the isovector spin-dipole resonances (SDR) in the Sb isotopes excited by the (3He, t) charge-exchange reaction at 450 MeV for 0° ≤ θt ≤ 1.15° have been measured. The results are compared with the predicted sum-rule strengths related to the difference of neutron and proton root-mean-square radii. Within the model used, the radii differences (neutron-skin thicknesses) deduced for 114Sn, 116Sn, 118Sn, 122Sn, and 124Sn are ≤0.09, 0.12 ± 0.06, 0.13 ± 0.06, 0.22 ± 0.07, and 0.19 ± 0.07 fm, respectively. This result suggests a new method for the measurement of the neutron-skin thicknesses of unstable nuclei.

Original languageEnglish
Pages (from-to)3216-3219
Number of pages4
JournalPhysical Review Letters
Issue number16
Publication statusPublished - Apr 19 1999

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Krasznahorkay, A., Fujiwara, M., Van Aarle, P., Akimune, H., Daito, I., Fujimura, H., Fujita, Y., Harakeh, M. N., Inomata, T., Jänecke, J., Nakayama, S., Tamii, A., Tanaka, M., Toyokawa, H., Uijen, W., & Yosoi, M. (1999). Excitation of isovector spin-dipole resonances and neutron skin of nuclei. Physical Review Letters, 82(16), 3216-3219.