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Nuclear Experiment

arXiv:1512.00590 (nucl-ex)
[Submitted on 2 Dec 2015 (v1), last revised 14 Mar 2016 (this version, v2)]

Title:Observation of Large Enhancement of Charge Exchange Cross Sections with Neutron-Rich Carbon Isotopes

Authors:I. Tanihata, S. Terashima, R. Kanungo, F. Ameil, J. Atkinson, Y. Ayyad, D. Cortina-Gil, I. Dillmann, A. Estradé, A. Evdokimov, F. Farinon, H. Geissel, G. Guastalla, R. Janik, R. Knoebel, J. Kurcewicz, Yu. A. Litvinov, M. Marta, M. Mostazo, I. Mukha, C. Nociforo, H.J. Ong, S. Pietri, A. Prochazka, C. Scheidenberger, B. Sitar, P. Strmen, M. Takechi, J. Tanaka, H. Toki, J. Vargas, J. S. Winfield, H. Weick
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Abstract:Production cross sections of nitrogen isotopes from high-energy carbon isotopes on hydrogen and carbon targets have been measured for the first time for a wide range of isotopes. The fragment separator FRS at GSI was used to deliver C isotope beams. The cross sections of the production of N isotopes were determined by charge measurements of forward going fragments. The cross sections show a rapid increase with the number of neutrons in the projectile. Since the production of nitrogen is mostly due to charge exchange reactions below the proton separation energies, the present data suggests a concentration of Gamow-Teller and Fermi transition strength at low excitation energies for neutron-rich isotopes. It was also observed that the cross sections were enhanced much more strongly for neutron rich isotopes in the C-target data.
Comments: 11 pages, 9 figures, 30 references
Subjects: Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Cite as: arXiv:1512.00590 [nucl-ex]
  (or arXiv:1512.00590v2 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.1512.00590

Submission history

From: Isao Tanihata [view email]
[v1] Wed, 2 Dec 2015 06:51:01 UTC (1,381 KB)
[v2] Mon, 14 Mar 2016 08:44:59 UTC (1,334 KB)
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