Coulomb dissociation of N 20 , 21
2016; American Physical Society; Volume: 93; Issue: 6 Linguagem: Inglês
10.1103/physrevc.93.065807
ISSN2470-0002
AutoresM. Röder, T. Adachi, Yulia Aksyutina, Juan M. A. Alcántara, Sebastian Altstadt, H. Álvarez-Pol, N. I. Ashwood, L. Atar, T. Aumann, V.V. Avdeichikov, M. Barr, S. Beceiro-Novo, D. Bemmerer, J. Benlliure, C. A. Bertulani, K. Boretzky, M. J. G. Borge, G. Burgunder, M. Caamaño, C. Caesar, E. Casarejos, W. N. Catford, J. Cederkäll, S. Chakraborty, M. Chartier, Leonid Chulkov, D. Cortina‐Gil, R. Crespo, U. Datta Pramanik, P. Díaz Fernández, I. Dillmann, Z. Elekes, J. Enders, О В Ершова, A. Estradé, F. Farinon, L. M. Fraile, M. Freer, M. Freudenberger, H. O. U. Fynbo, D. Galaviz, H. Geißel, R. Gernhäuser, K. Göbel, P. Golubev, D. González-Díaz, J. Hagdahl, T. Heftrich, Michael Heil, M. Heine, A. Heinz, Ana Henriques, M. Holl, G. Ickert, A. S. Ignatov, Bo Jakobsson, H. Johansson, B. Jonson, N. Kalantar‐Nayestanaki, R. Kanungo, A. Kelić-Heil, R. Knöbel, T. Kröll, R. Krücken, J. Kurcewicz, Nikolaus Kurz, M. Labiche, Christoph Langer, T. Le Bleis, R. C. Lemmon, O. Lepyoshkina, Simon Lindberg, Jorge Machado, J. Marganiec, M. Mostazo, Alina Movsesyan, Mohammad Ali Najafi, T. Nilsson, Chiara Nociforo, V. Panin, S. Paschalis, Á. Perea, M. Petri, S. Piétri, Ralf Plag, A. Procházka, Md. Anisur Rahaman, Ganna Rastrepina, R. Reifarth, G. Ribeiro, M. V. Ricciardi, C. Rigollet, K. Riisager, D. M. Rossi, Jose Sanchez del Rio Saez, D. Savran, H. Scheit, H. Simon, O. Sorlin, Victor Stoica, B. Štreicher, Jon Taylor, O. Tengblad, Satoru Terashima, Ronja Thies, Yasuhiro Togano, Ethan Uberseder, J. Van de Walle, Paulo Eduardo Neves Ferreira Velho, В. М. Волков, A. Wagner, Felix Wamers, H. Weick, Mario Weigand, C. Wheldon, G. L. Wilson, Christine Wimmer, J. S. Winfield, P. J. Woods, Dmitry Yakorev, Mikhail Zhukov, A. Zilges, Κ. Zuber,
Tópico(s)Astronomical and nuclear sciences
ResumoNeutron-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.
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