Compressional-mode giant resonances in deformed nuclei

Background-free inelastic scattering spectra have been obtained for the Sm isotopes with 400 MeV α particles at forward angles (including 0°) to investigate the effect of deformation on the compressional-mode giant resonances. The strength distributions for the isoscalar giant resonances (L⩽3) have...

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Bibliographic Details
Published in:Physics letters. B 2002-11, Vol.549 (1-2), p.58-63
Main Authors: Itoh, M, Sakaguchi, H, Uchida, M, Ishikawa, T, Kawabata, T, Murakami, T, Takeda, H, Taki, T, Terashima, S, Tsukahara, N, Yasuda, Y, Yosoi, M, Garg, U, Hedden, M, Kharraja, B, Koss, M, Nayak, B.K, Zhu, S, Fujimura, H, Fujiwara, M, Hara, K, Yoshida, H.P, Akimune, H, Harakeh, M.N, Volkerts, M
Format: Article
Language:English
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Summary:Background-free inelastic scattering spectra have been obtained for the Sm isotopes with 400 MeV α particles at forward angles (including 0°) to investigate the effect of deformation on the compressional-mode giant resonances. The strength distributions for the isoscalar giant resonances (L⩽3) have been extracted for the spherical nucleus 144Sm and the deformed nucleus 154Sm. We have observed that the effects of deformation are different for the low- and high-excitation-energy components of the isoscalar giant dipole resonance in 154Sm. Evidence for the theoretically predicted coupling between the isoscalar dipole resonance and the high-energy octupole resonance is reported.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(02)02892-7