Experimental barrier distributions for the fusion of 12C, 16O, 28Si, and 35Cl with 92Zr and coupled-channels analyses

J. O. Newton, C. R. Morton, M. Dasgupta, J. R. Leigh, J. C. Mein, D. J. Hinde, H. Timmers, K. Hagino

研究成果: Article査読

138 被引用数 (Scopus)

抄録

Precise excitation functions for the fusion of 12C, 16O, 28Si, and 35Cl on 92Zr were measured for bombarding energies spanning the Coulomb barrier regions. Experimental fusion barrier distributions were derived from these data and compared with the results of realistic coupled-channels calculations, which included couplings to all orders and treated excitation energies correctly. To gain reasonable agreement for the heavier projectiles it was necessary to include double-phonon excitations of the first 2+ and 3- vibrational states in 92Zr. The diffuseness parameter required to fit the high-energy cross sections increases with increasing charge of the projectile and, as found in earlier work, is higher than that required to fit elastic-scattering data. It is suggested that a potential which falls more rapidly at large distance than the Woods-Saxon form might help explain the anomaly.

本文言語English
論文番号064608
ページ(範囲)646081-6460812
ページ数5814732
ジャーナルPhysical Review C - Nuclear Physics
64
6
DOI
出版ステータスPublished - 2001 12月
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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