# Coulomb dissociation of $^{20,21}$N

Abstract : Neutron-rich light nuclei and their reactions play an important role for the creation of chemical elements. Here, data from a Coulomb dissociation experiment on $^{20,21}$N are reported. Relativistic $^{20,21}$N 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 $^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ and $^{20}\mathrm{N}(\mathrm{n},\gamma)^{21}\mathrm{N}$ excitation functions and thermonuclear reaction rates have been determined. The $^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ rate is up to a factor of 5 higher at $T<1$\,GK with respect to previous theoretical calculations, leading to a 10\,\% decrease in the predicted fluorine abundance.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01325998
Contributor : Michel Lion <>
Submitted on : Thursday, June 2, 2016 - 9:48:57 PM
Last modification on : Saturday, April 14, 2018 - 11:46:03 AM

### Citation

M. Röder, T. Adachi, Y. Aksyutina, J. Alcantara, S. Altstadt, et al.. Coulomb dissociation of $^{20,21}$N. Physical Review C, American Physical Society, 2016, 93, pp.065807. ⟨10.1103/PhysRevC.93.065807⟩. ⟨in2p3-01325998⟩

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