Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility

T. Li; U. Garg; Y. Liu; R. Marks; B. K. Nayak; P. V. Madhusudhana Rao; M. Fujiwara; H. Hashimoto; K. Kawase; K. Nakanishi; S. Okumura; M. Yosoi; M. Itoh; M. Ichikawa; R. Matsuo; T. Terazano; M. Uchida; T. Kawabata; H. Akimune; Y. Iwao; T. Murakami; H. Sakaguchi; S. Terashima; Y. Yasuda; J. Zenihiro; M. N. Harakeh

doi:10.1103/physrevlett.99.162503

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arXiv · 0709.0567

Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility

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Abstract

The strength distributions of the giant monopole resonance (GMR) have been measured in the even-A Sn isotopes (A=112--124) with inelastic scattering of 400-MeV $α$ particles in the angular range $0^\circ$--$8.5^\circ$. We find that the experimentally-observed GMR energies of the Sn isotopes are lower than the values predicted by theoretical calculations that reproduce the GMR energies in $^{208}$Pb and $^{90}$Zr very well. From the GMR data, a value of $K_τ = -550 \pm 100$ MeV is obtained for the asymmetry-term in the nuclear incompressibility.

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T. Li, U. Garg, Y. Liu, R. Marks, B. K. Nayak, P. V. Madhusudhana Rao, M. Fujiwara, H. Hashimoto, K. Kawase, K. Nakanishi, S. Okumura, M. Yosoi, M. Itoh, M. Ichikawa, R. Matsuo, T. Terazano, M. Uchida, T. Kawabata, H. Akimune, Y. Iwao, T. Murakami, H. Sakaguchi, S. Terashima, Y. Yasuda, J. Zenihiro, M. N. Harakeh. 2007-09-05. Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility. https://doi.org/10.1103/physrevlett.99.162503

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