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Tensor polarization of 12C[2+ 1] in the 16O(13C,12C)17O reaction at 50 MeV

  • Heavy ion physics
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The European Physical Journal A - Hadrons and Nuclei Aims and scope Submit manuscript

Abstract:

The 16O(13C,12C)17O reaction at 50 MeV has been investigated using the kinematical coincidence method. Polarization tensors t 20 and t 40 of 12C[2+ 1] for the quantization axis taken along the direction of propagation have been measured by analyzing the energy spectrum of 12C[2+ 1], modulated by the effect of γ ray emission. The deduced t 40 values significantly deviate from zero, contrary to the prediction of the distorted-wave Born approximation theory based on one-step p shell neutron stripping without spin-dependent interactions. The phenomenological spin–orbit interaction necessary to reproduce the magnitude of measured t 40 is found to be much larger than the folding model prediction. It is shown that the experimental polarization tensors as well as the cross sections can be reproduced by introducing multi-step processes involving excitations in 12C and 13C without introducing spin-dependent interactions.

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Received: 2 August 1999 / Revised version: 3 February 2000

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Ikeda, N., Nakamura, F., Mizuuchi, K. et al. Tensor polarization of 12C[2+ 1] in the 16O(13C,12C)17O reaction at 50 MeV . EPJ A 7, 491–502 (2000). https://doi.org/10.1007/PL00013650

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  • DOI: https://doi.org/10.1007/PL00013650

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