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Phys. Rev. C 59, 760 - 766 (1999)

(α,2α) cluster knockout reaction on 9Be and 12C at 580 MeV

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A. Nadasen, J. Brusoe, J. Farhat, K. A. G. Rao, D. Sisan, and J. Williams
Department of Natural Sciences, University of Michigan, Dearborn, Michigan 48128

P. G. Roos, F. Adimi *, T. Gu †, and M. Khayat ‡
Department of Physics, University of Maryland, College Park, Maryland 20742

R. E. Warner
Department of Physics, Oberlin College, Oberlin, Ohio 44074

Received 1 September 1998

Cross-section measurements of the 9Be,12C(α,2α) reaction at 580 MeV bombarding energy are presented. The data are compared with distorted-wave impulse approximation calculations. The agreement between theory and experiment suggests a dominance of the quasifree knockout mechanism. The extracted α-particle spectroscopic factors are in reasonable agreement with theory and proton-induced knockout reactions, unlike measurements for the (α,2α) reaction at energies <~140 MeV, but still show significant angular dependence.


©1999 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.59.760
DOI: 10.1103/PhysRevC.59.760
PACS: 21.60.Gx, 24.10.Eq, 25.55.-e

* Present address: Research and Data Systems Corporation, 7833 Walker Dr., Suite 550, Greenbelt, MD 20770.
† Present address: Cable & Wireless USA, 1919 Gallows Road, Vienna, VA 22182.
‡ Present address: Research and Data Systems Corporation, 7833 Walker Dr., Suite 550, Greenbelt, MD 20770.

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