Coulomb dissociation of 20,21N

Röder, M. and Adachi, T. and Aksyutina, Y. and Alcantara, J. and Altstadt, S. and Elekes, Zoltán (2016) Coulomb dissociation of 20,21N. PHYSICAL REVIEW C, 93 (6). ISSN 2469-9985

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Abstract

Neutron-rich light nuclei and their reactions play an important role in the creation of chemical elements. Here, data from a Coulomb dissociation experiment on N20,21 are reported. Relativistic N20,21 ions impinged on a lead target and the Coulomb dissociation cross section was determined in a kinematically complete experiment. Using the detailed balance theorem, the N19(n,γ)N20 and N20(n,γ)N21 excitation functions and thermonuclear reaction rates have been determined. The N19(n,γ)N20 rate is up to a factor of 5 higher at T<1GK with respect to previous theoretical calculations, leading to a 10% decrease in the predicted fluorine abundance.

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