The isoscalar giant dipole resonance in 208Pb and the nuclear incompressibility
/ Authors
M. Hedden, U. Garg, B. Kharraja, S. Zhu, M. Uchida, H. Sakaguchi, T. Murakami, M. Yosoi, H. Takeda, M. Itoh
and 13 more authors
T. Kawabata, T. Taki, T. Ishikawa, N. Tsukuhara, Y. Yasuda, M. Fujiwara, H. Fujimura, H. Yoshida, E. Obayashi, K. Hara, H. Akimune, M. Harakeh, M. Volkerts
/ Abstract
The isoscalar giant dipole resonance (ISGDR) has been investigated in 208Pb using inelastic scattering of 400 MeV α particles at extremely forward angles, including 0°. Using the superior capabilities of the Grand Raiden spectrometer, it has been possible to obtain inelastic spectra devoid of any “instrumental” background. The ISGDR strength distribution has been extracted from a multipole-decomposition of the observed spectra. The implications of these results on the experimental value of nuclear incompressibility are discussed.
DOI: 10.1063/1.1470054