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Survey of $^{17}$O excited states selectively populated by five-particle transfer reactions

Abstract : The highly selective reactions 12C(7Li,d)17O and 12C(6Li,p)17O have been used to populate high-lying excited states in 17O up to 16 MeV in excitation. Several of the states are newly observed, and the existence of others in a previous study of 12C(6Li,p)17O is confirmed. The observed spectra show a clear gap of about 3 MeV, indicating an energy gap between 3p-2h and 5p-4h states in 17O. Differential cross section angular distributions have been extracted from the data for both reactions and they have been compared with finite-range DWBA calculations by assuming a “5He” cluster transfer. Possible spins and parities are reported for states at 11.82 MeV (7/2+), 12.00 MeV (9/2+),12.22 MeV (7/2-), and 12.42 MeV (9/2+).
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http://hal.in2p3.fr/in2p3-00286498
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Submitted on : Tuesday, June 10, 2008 - 12:00:03 PM
Last modification on : Wednesday, September 16, 2020 - 4:00:16 PM

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A.M. Crisp, B.T. Roeder, O.A. Momotyuk, N. Keeley, K.W. Kemper, et al.. Survey of $^{17}$O excited states selectively populated by five-particle transfer reactions. Physical Review C, American Physical Society, 2008, 77, pp.044315. ⟨10.1103/PhysRevC.77.044315⟩. ⟨in2p3-00286498⟩

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