Polarization Transfer in the16O(p, p′) Reaction at Forward Angles and Structure of the Spin‐dipole Resonances
/ Authors
T. Kawabata, H. Akimune, G. Berg, H. Fujimura, H. Fujita, Y. Fujita, M. Fujiwara, K. Hara, K. Hatanaka, K. Hosono
and 19 more authors
T. Ishikawa, M. Itoh, J. Kamiya, M. Nakamura, T. Noro, E. Obayashi, H. Sakaguchi, Y. Shimbara, H. Takeda, T. Taki, A. Tamii, H. Toyokawa, M. Uchida, H. Ueno, T. Wakasa, K. Yamasaki, Y. Yasuda, H. Yoshida, M. Yosoi
/ Abstract
Cross sections and polarization transfer observables in the 16O(p,p′) reactions at 392 MeV were measured at forward angles including 0°. The non‐spin‐flip (ΔS = 0) and spin‐flip (ΔS = 1) strengths in transitions to several discrete states and broad resonances in 16O were extracted using a model‐independent method. The giant resonances in the energy region of E x = 19–27 MeV were found to be predominantly excited by ΔL = 1 transitions. The strength distribution of spin‐dipole transitions with ΔS = 1 and ΔL = 1 were deduced. The obtained distribution was compared with a recent shell model calculation. Experimental results are reasonably explained by distorted‐wave impulse‐approximation calculations with the shell model wave functions.