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Phys. Rev. C 66, 014605 (2002) [4 pages]

Reaction mechanism for 12C(e,e′n)11C in the continuum above the giant resonance

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K. Takahisa*, T. Saito†, S. Suzuki‡, C. Takakuwa§, and M. Oikawa**
Laboratory of Nuclear Science, Tohoku University, Mikamine, Taihaku-ku, Sendai 982-0826, Japan

T. Nakagawa†† and T. Tohei††
Department of Physics, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan

K. Abe
Department of Nuclear Engineering, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8579, Japan

Received 14 January 2002; published 16 July 2002

Out-of-plane measurements of the angular correlations for the 12C(e,e′n)11C reaction have been performed in the continuum above the giant resonance. The cross sections were directly separated into the longitudinal and transverse, longitudinal-transverse, and transverse-transverse components. Recent random-phase approximation (RPA) predictions reproduce fairly well the angular correlations of both the 12C(e,e′n0,1) and 12C(e,e′p0) reactions, but the Hartree-Fock predictions fail to reproduce that of (e,e′n0,1). It suggests that RPA correlations are crucial for the interpretation of the (e,e′n0,1) reaction in the observed excitation energy region.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.66.014605
DOI:
10.1103/PhysRevC.66.014605
PACS:
25.30.Fj, 23.20.-g, 24.30.-v, 27.20.+n

*Present address: Research Center for Nuclear Physics, Osaka University, Ibaraki 567-0047, Japan.

†Present address: Faculty of Engineering, Tohoku Gakuin University, Chuo, Tagajo 985-8537, Japan.

‡Present address: Japan Synchrotron Radiation Research Institute, Mikazuki-cho, Sayogun, Hyogo 679-5198, Japan.

§Present address: Research & Development Center, Toshiba Co. Shinsugita-cho, Isogo-ku, Yokohama 235-8522, Japan.

**Present address: 5th Research Center, Technical Research & Development Institute, Japan Defense Agency, Nagase, Yokosuka 239-0826, Japan.

††Present address: Tohoku Institute of Technology, Kasumi-cho, Taihaku-ku, Sendai 982-8577, Japan.

 
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