201. Measurement of $^{139}$La(n,$\gamma$) Cross Section at n_TOF
- Author
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M. Mosconi, S. O'Brien, F. Käppeler, R. Terlizzi, W.I. Furman, Carlos Guerrero, U. Abbondanno, Heinz Oberhummer, C. A. Papachristodoulou, L. Tavora, A. Herrera-Martinez, S. Walter, V. Chepel, Ralf Plag, M. Krtička, G. Vannini, P. Rullhusen, F. Gramegna, P. Vaz, I. Savvidis, G. Rudolf, Corrie S. Moreau, R. Ferreira-Marques, R. C. Haight, P. Baumann, M. Oshima, K. Fujii, J. Andrzejewski, C. Paradela, S. Andriamonje, L. Audouin, G. Aerts, S. David, E. Chiaveri, G. Tagliente, P. F. Mastinu, Michael Wiescher, C. Stephan, G. Cortes, Masayuki Igashira, E. Jericha, D. Cano-Ott, E. Griesmayer, F. Gunsing, N. Colonna, V. Konovalov, L. Perrot, Matthias Heil, J. Pancin, R. Vlastou, Roberto Capote, A. J. M. Plompen, P.A. Assimakopoulos, S. Lukic, A. Plukis, E. Berthoumieux, J. Salgado, A. Poch, A. Lindote, J. Marganiec, Y. Kadi, D. Karamanis, I. Dillmann, M. C. Vincente, H. Frais-Koelbl, F. Neves, N. Patronis, F. Voss, Isabel Lopes, I. Duran, P. M. Milazzo, James L. Cox, A. Goverdovski, Vasilis Vlachoudis, S. Isaev, L. Sarchiapone, F. Alvarez-Velarde, A. Carrillo de Albornoz, F. Bečvář, R. Gallino, A. Ferrari, M. Dalhfors, Gerald Badurek, K. Wisshak, R. Dolfini, C. Pretel, P. E. Koehler, H. Wendler, F. Calviño, H. Leeb, E. Kossionides, A. Ventura, P. Pavlopoulos, Rene Reifarth, L. Ferrant, H. Álvarez, Aaron Couture, L. Fitzpatrick, C. Lamboudis, J. L. Tain, A. Pavlik, D. Villamarin, C. Domingo-Pardo, J. M. Quesada, M. Embid-Segura, L. Tassan-Got, Manuel Lozano, C. T. Papadopoulos, C. Rubbia, B. Haas, Isabel S. Gonçalves, L. Marques, S. Marrone, M. Kerveno, W. Dridi, A. Mengoni, V. Ketlerov, C. Eleftheriadis, Thomas Rauscher, D. Karadimos, E. González-Romero, M. Rosetti, P. Cennini, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), S.V. Harissopulos, P. Demetriou, E. Julin, and nTOF
- Subjects
nuclei with mass number 90 to 149 ,lanthanum ,Chemistry ,Radiative capture ,Analytical chemistry ,Resonance ,020206 networking & telecommunications ,02 engineering and technology ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Abundance of the chemical elements ,Cross section (physics) ,Neutron capture ,25.40.Lw, 29.30.-h ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Neutron ,Spectroscopy ,s-process ,time of flight spectroscopy ,neutron radiative capture - Abstract
International audience; The capture cross section of the 139La has been measured relative to 197Au standard at n_TOF. We provide here a short description of the experimental apparatus and of the data analysis procedures. The extracted resonance parameters allow to calculate the fundamental nuclear quantities such as average spacing $\langleD\rangle$ 1=0 = 268 ± 22 eV, $\langleD\rangle$ 1=1 < 250 eV neutron strength functions S0 = (0.79 ± 0.03)×10-4, and S1 = (0.73 ± 0.05)×10-4 and the Maxwellian-averaged capture cross section (MACS). The MACS is particularly useful for the determination of the abundance synthesized by the main component of the s process
- Published
- 2005
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