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22 results on '"Pretel, C."'

1. Dissemination of data measured at the CERN n TOF facility

Author

Dupont, E., Otuka, N., Cabellos, O., Aberle, O., Aerts, G., Altstadt, S., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Audouin, L., Bacak, M., Badurek, G., Balibrea, J., Barbagallo, M., Barros, S., Baumann, P., Bécares, V., Bečvář, F., Beinrucker, C., Belloni, F., Berthier, B., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brown, A., Brugger, M., Caamaño, M., Calviani, M., Calviño, F., Cano-Ott, D., Capote, R., Cardella, R., Carrapiço, C., Casanovas, A., Castelluccio, D. M., Cennini, P., Cerutti, F., Chen, Y. H., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M. A., Cosentino, L., Couture, A., Cox, J., Damone, L. A., David, S., Deo, K., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Dressler, R., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Fernández-Domínguez, B., Ferrant, L., Ferrari, A., Ferreira, P., Finocchiaro, P., Fraval, K., Frost, R. J. W., Fujii, K., Furman, W., Ganesan, S., Garcia, A. R., Gawlik, A., Gheorghe, I., Gilardoni, S., Giubrone, G., Glodariu, T., Göbel, K., Gomez-Hornillos, M. B., Goncalves, I. F., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Haight, R., Harada, H., Heftrich, T., Heil, M., Heinitz, S., Hernández-Prieto, A., Heyse, J., Igashira, M., Isaev, S., Jenkins, D. G., Jericha, E., Kadi, Y., Kaeppeler, F., Kalamara, A., Karadimos, D., Karamanis, D., Katabuchi, T., Kavrigin, P., Kerveno, M., Ketlerov, V., Khryachkov, V., Kimura, A., Kivel, N., Kokkoris, M., Konovalov, V., Krtička, M., Kroll, J., Kurtulgil, D., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Naour, C. Le, Lerendegui-Marco, J., Leong, L. S., Licata, M., Meo, S. Lo, Lonsdale, S. J., Losito, R., Lozano, M., Macina, D., Manousos, A., Marganiec, J., Martinez, T., Marrone, S., Masi, A., Massimi, C., Mastinu, P., Mastromarco, M., Matteucci, F., Maugeri, E. A., Mazzone, A., Mendoza, E., Mengoni, A., Milazzo, P. M., Mingrone, F., Mirea, M., Mondelaers, W., Montesano, S., Moreau, C., Mosconi, M., Musumarra, A., Negret, A., Nolte, R., O’Brien, S., Oprea, A., Palomo-Pinto, F. R., Pancin, J., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perkowski, J., Perrot, L., Pigni, M. T., Plag, R., Plompen, A., Plukis, L., Poch, A., Porras, I., Praena, J., Pretel, C., Quesada, J. M., Radeck, D., Rajeev, K., Rauscher, T., Reifarth, R., Riego, A., Robles, M., Roman, F., Rout, P. C., Rudolf, G., Rubbia, C., Rullhusen, P., Ryan, J. A., Sabaté-Gilarte, M., Salgado, J., Santos, C., Sarchiapone, L., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Sedyshev, P., Smith, A. G., Sosnin, N. V., Stamatopoulos, A., Stephan, C., Suryanarayana, S. V., Tagliente, G., Tain, J. L., Tarifeño-Saldivia, A., Tarrío, D., Tassan-Got, L., Tavora, L., Terlizzi, R., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Versaci, R., Vermeulen, M. J., Villamarin, D., Vicente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Wallner, A., Walter, S., Ware, T., Warren, S., Weigand, M., Weiß, C., Wolf, C., Wiesher, M., Wisshak, K., Woods, P. J., Wright, T., Žugec, P., Hambsch, F.-J., Kopecky, S., Siegler, P., Oberstedt, S., Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Mengoni, A., Lo Meo, S., Castelluccio, D. M., Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), n_TOF, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Dupont, E., Otuka, N., Cabellos, O., Aberle, O., Aerts, G., Altstadt, S., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Audouin, L., Bacak, M., Badurek, G., Balibrea, J., Barbagallo, M., Barros, S., Baumann, P., Bécares, V., Bečvář, F., Beinrucker, C., Belloni, F., Berthier, B., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brown, A., Brugger, M., Caamaño, M., Calviani, M., Calviño, F., Cano-Ott, D., Capote, R., Cardella, R., Carrapiço, C., Casanovas, A., Castelluccio, D.M., Cennini, P., Cerutti, F., Chen, Y.H., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Cosentino, L., Couture, A., Cox, J., Damone, L.A., David, S., Deo, K., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Dressler, R., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Fernández-Domínguez, B., Ferrant, L., Ferrari, A., Ferreira, P., Finocchiaro, P., Fraval, K., Frost, R.J.W., Fujii, K., Furman, W., Ganesan, S., Garcia, A.R., Gawlik, A., Gheorghe, I., Gilardoni, S., Giubrone, G., Glodariu, T., Göbel, K., Gomez-Hornillos, M.B., Goncalves, I.F., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Haight, R., Harada, H., Heftrich, T., Heil, M., Heinitz, S., Hernández-Prieto, A., Heyse, J., Igashira, M., Isaev, S., Jenkins, D.G., Jericha, E., Kadi, Y., Kaeppeler, F., Kalamara, A., Karadimos, D., Karamanis, D., Katabuchi, T., Kavrigin, P., Kerveno, M., Ketlerov, V., Khryachkov, V., Kimura, A., Kivel, N., Kokkoris, M., Konovalov, V., Krtička, M., Kroll, J., Kurtulgil, D., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Naour, C. Le, Lerendegui-Marco, J., Leong, L.S., Licata, M., Meo, S. Lo, Lonsdale, S.J., Losito, R., Lozano, M., Macina, D., Manousos, A., Marganiec, J., Martinez, T., Marrone, S., Masi, A., Massimi, C., Mastinu, P., Mastromarco, M., Matteucci, F., Maugeri, E.A., Mazzone, A., Mendoza, E., Milazzo, P.M., Mingrone, F., Mirea, M., Mondelaers, W., Montesano, S., Moreau, C., Mosconi, M., Musumarra, A., Negret, A., Nolte, R., O'Brien, S., Oprea, A., Palomo-Pinto, F.R., Pancin, J., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perkowski, J., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, L., Poch, A., Porras, I., Praena, J., Pretel, C., Quesada, J.M., Radeck, D., Rajeev, K., Rauscher, T., Reifarth, R., Riego, A., Robles, M., Roman, F., Rout, P.C., Rudolf, G., Rubbia, C., Rullhusen, P., Ryan, J.A., Sabaté-Gilarte, M., Salgado, J., Santos, C., Sarchiapone, L., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Sedyshev, P., Smith, A.G., Sosnin, N.V., Stamatopoulos, A., Stephan, C., Suryanarayana, S.V., Tagliente, G., Tain, J.L., Tarifeño-Saldivia, A., Tarrío, D., Tassan-Got, L., Tavora, L., Terlizzi, R., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Versaci, R., Vermeulen, M.J., Villamarin, D., Vicente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Wallner, A., Walter, S., Ware, T., Warren, S., Weigand, M., Weiß, C., Wolf, C., Wiesher, M., Wisshak, K., Woods, P.J., Wright, T., Ž Ugec, P., and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear reaction, nTOF, Physics::Instrumentation and Detectors, Chemistry & allied sciences, QC1-999, Nuclear Theory, Neutron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Physics and Astronomy (all), 0103 physical sciences, CERN, Nuclear astrophysics, Nuclear Physics - Experiment, 010306 general physics, Nuclear Experiment, Physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], Neutrons, Large Hadron Collider, Física [Àrees temàtiques de la UPC], Cross section, Reaccions nuclears, 010308 nuclear & particles physics, Nuclear data, Nuclear technology, ddc:540, Nuclear reactions
Abstract

The n-TOF neutron time-of-flight facility at CERN is used for high quality nuclear data measurements from thermal energy up to hundreds of MeV. In line with the CERN open data policy, the n-TOF Collaboration takes actions to preserve its unique data, facilitate access to them in standardised format, and allow their re-use by a wide community in the fields of nuclear physics, nuclear astrophysics and various nuclear technologies. The present contribution briefly describes the n-TOF outcomes, as well as the status of dissemination and preservation of n-TOF final data in the international EXFOR library. © The Authors, published by EDP Sciences, 2017.

Published
2016

2. Neutron-induced fission cross section of Np237 in the keV to MeV range at the CERN n_TOF facility

Author

Diakaki, M, Karadimos, D, Vlastou, R, Kokkoris, M, Demetriou, P, Skordis, E, Tsinganis, A, Abbondanno, U, Aerts, G, Álvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Bečvář, F, Berthoumieux, E, Calviani, M, Calviño, F, Cano-Ott, D, Capote, R, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, David, S, Dolfini, R, Domingo-Pardo, C, Dorochenko, A, Dridi, W, Duran, I, Eleftheriadis, Ch, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Fuji, K, Furman, W, Goncalves, I, Gallino, R, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Ioannidis, K, Isaev, S, Jericha, E, Kadi, Y, Käppeler, F, Karamanis, D, Kerveno, M, Ketlerov, V, Koehler, P, Kolokolov, D, Konovalov, V, Krtička, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Massimi, C, Mastinu, P, Mengoni, A, Milazzo, P M, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Oshima, M, Pancin, J, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Sedysheva, M, Stamoulis, K, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, M C, Vlachoudis, V, Voss, F, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment, Nuclear Experiment
Abstract

The neutron-induced fission cross section of Np237 was experimentally determined at the high-resolution and high-intensity facility n_TOF, at CERN, in the energy range 100 keV to 9 MeV, using the U235(n,f) and U238(n,f) cross section standards below and above 2 MeV, respectively. A fast ionization chamber was used in order to detect the fission fragments from the reactions and the targets were characterized as far as their mass and homogeneity are concerned by means of α spectroscopy and Rutherford backscattering spectroscopy respectively. Theoretical calculations within the Hauser-Feshbach formalism have been performed, employing the empire code, and the model parameters were tuned in order to successfully reproduce the experimental fission cross-sectional data and simultaneously all the competing reaction channels.

Published
2016

3. Nuclear Astrophysics at the n_TOF facility, CERN

Author

Tagliente, G, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Audouin, L, Badurek, G, Baumann, P, Bečvář, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calviño, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapiço, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillman, I, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Käppeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Koehler, P, Kossionides, E, Krtička, M, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone,S, Martinez, T, Massimi, C, Mastinu, P, Mengoni, A, Milazzo, P M, Mosconi, M, Neves, F, Oberhummer, H, Pancin, J, Papachris-todoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Stephan, C, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, A, Vincente, M C, Vlachoudis, V, Vlastou, V, Voss, F, Walter, F, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2015

4. Measurement and analysis of the Am-243 neutron capture cross section at the n_TOF facility at CERN

Author

TOF Collaboration, Mendoza, E., Cano-Ott, D., Guerrero, C., Berthoumieux, E., Abbondanno, U., Aerts, G., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Balibrea, J., Baumann, P., Becvar, F., Belloni, F., Calvino, F., Calviani, M., Capote, R., Carrapico, C., de Albornoz, A. Carrillo, Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, I., Dolfini, R., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Furman, W., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, S., Jericha, E., Kappeler, F., Kadi, Y., Karadimos, D., Karamanis, D., Ketlerov, V., Kerveno, M., Koehler, P., Konovalov, V., Kossionides, E., Krticka, M., Lampoudis, C., Leeb, H., Lindote, A., Lopes, I., Lossito, R., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Martinez, T., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, P. M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., Brien, S. O, Oshima, M., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Pigni, M. T., Plag, R., Plompen, A., Plukis, A., Poch, A., Praena, J., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Savvidis, I., Stephan, C., Tagliente, G., Tain, J. L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vicente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., Wisshak, K., 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), n_TOF Collaboration, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and 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)

Subjects
Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

Background: The design of new nuclear reactors and transmutation devices requires to reduce the present neutron cross section uncertainties of minor actinides. Purpose: Improvement of the 243Am(n,γ ) cross section uncertainty. Method: The 243Am(n,γ ) cross section has been measured at the n_TOF facility at CERN with a BaF2 total absorption calorimeter, in the energy range between 0.7 eV and 2.5 keV. Results: The 243Am(n,γ ) cross section has been successfully measured in the mentioned energy range. The resolved resonance region has been extended from 250 eV up to 400 eV. In the unresolved resonance region our results are compatible with one of the two incompatible capture data sets available below 2.5 keV. The data available in EXFOR and in the literature have been used to perform a simple analysis above 2.5 keV. Conclusions: The results of this measurement contribute to reduce the 243Am(n,γ ) cross section uncertainty and suggest that this cross section is underestimated up to 25% in the neutron energy range between 50 eV and a few keV in the present evaluated data libraries., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2014

5. High accuracy determination of the $^{238}$U/$^{235}$U fission cross section ratio up to $\sim$1 GeV at n_TOF (CERN)

Author

Paradela, C., Calviani, M., Tarrío, D., Leal-Cidoncha, E., Leong, L. S., Tassan-Got, L., Naour, C. Le, Duran, I., Colonna, N., Audouin, L., Mastromarco, M., Meo, S. Lo, Ventura, A., Aerts, G., Altstadt, S., Álvarez, H., Álvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Badurek, G., Barbagallo, M., Baumann, P., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviño, F., Cano-Ott, D., Capote, R., Carrapiço, C., Cennini, P., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M. A., Cosentino, L., Couture, A., Cox, J., David, S., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Dressler, R., Dridi, W., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Finocchiaro, P., Fraval, K., Fujii, K., Furman, W., Ganesan, S., García, A. R., Giubrone, G., Gómez-Hornillos, M. B., Gonçalves, I. F., González-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Haight, R., Heil, M., Heinitz, S., Igashira, M., Isaev, S., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Kivel, N., Kokkoris, M., Konovalov, V., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Lederer, C., Leeb, H., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Martínez, T., Marrone, S., Massimi, C., Mastinu, P., Mendoza, E., Mengoni, A., Milazzo, P. M., Mingrone, F., Mirea, M., Mondelaers, W., Moreau, C., Mosconi, M., Musumarra, A., O'Brien, S., Pancin, J., Patronis, N., Pavlik, A., Pavlopoulos, P., Perkowski, J., Perrot, L., Pigni, M. T., Plag, R., Plompen, A., Plukis, L., Poch, A., Pretel, C., Praena, J., Quesada, J., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rudolf, G., Rubbia, C., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Stephan, C., Tagliente, G., Tain, J. L., Tavora, L., Terlizzi, R., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Vaz, P., Versaci, R., Vermeulen, M. J., Villamarin, D., Vincente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Wallner, A., Walter, S., Ware, T., Weigand, M., Weiß, C., Wiesher, M., Wisshak, K., Wright, T., Žugec, P., Universidade de Santiago de Compostela [Spain] (USC ), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, n_TOF, and 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)

Subjects
FOS: Physical sciences, Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The $^{238}$U to $^{235}$U fission cross section ratio has been determined at n_TOF up to $\sim$1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets have been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of the neutron energy. The result confirms current evaluations up to 200 MeV. A good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solving a long-standing discrepancy between the two most important experimental dataset available so far above 20 MeV, while extending the neutron energy range for the first time up to $\sim$1 GeV. The U238 to U235 fission cross section ratio has been determined at n_TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3–4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV. The $^{238}$U to $^{235}$U fission cross section ratio has been determined at n_TOF up to $\sim$1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets have been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3-4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of the neutron energy. The result confirms current evaluations up to 200 MeV. A good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solving a long-standing discrepancy between the two most important experimental dataset available so far above 20 MeV, while extending the neutron energy range for the first time up to $\sim$1 GeV.

Published
2014
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6. Measurement of resolved resonances of Th-232 (n, gamma) at the n_TOF facility at CERN

Author

Gunsing, F, Berthoumieux, E, Aerts, G, Abbondanno, U, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Calvino, F, Cano-Ott, D, Capote, R, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillman, I, Dolfini, R, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Fujii, K, Furman, W, Goncalves, I, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Isaev, S, Jericha, E, Kappeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lampoudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Mastinu, P, Mengoni, A, Milazzo, P M, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Oshima, M, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2012

7. Nuclear astrophysics at n_TOF, CERN

Author

Tagliente, G, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Audouin, L, Badurek, G, Baumann, P, Bečvář, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calviño, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapiço, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillman, I, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Käppeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Koehler, P, Kossionides, E, Krtička, M, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez, T, Massimi, C, Mastinu, P, Mengoni, A, Milazzo, P M, Mosconi, M, Neves, F, Oberhummer, H, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Stephan, C, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2012

8. Measurement of the U-236 (n, f) cross section from 170 meV to 2 MeV at the CERN n_TOF facility

Author

Sarmento, R, Calviani, M, Praena, J, Colonna, N, Belloni, F, Goncalves, I F, Vaz, P, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Barbagallo, M, Badurek, G, Baumann, P, Becvar, F, Berthoumieux, E, Calvino, F, Cano-Ott, D, Capote, R, Carrapico, C, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Diakaki, M, Dillmann, I, Dolfini, R, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Frais-Koelbl, H, Fuji, K, Furman, W, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Isaev, S, Jericha, E, Kappeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lampoudis, C, Lederer, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Martinez, T, Massimi, C, Mastinu, P, Mendoza, E, Mengoni, A, Milazzo, P M, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Oshima, M, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tarrio, D, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Ventura, A, Villamarin, D, Vicente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2011

9. Neutron-induced fission cross sections of 233U and 243Am in the energy range 0.5 Mev En 20 MeV @ n_TOF

Author

Belloni, F, Milazzo, P M, Calviani, M, Colonna, N, Mastinu, P, Abbondanno, U, Aerts, G, Álvarez, H, Álvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvár, F, Berthoumieux, E, Calviño, F, Cano-Ott, D, Capote, R, Carrapiço, C, Cennini, P, Chepel, V, Chiaveri, E, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Goncalves, I, González-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Käppeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Koehler, P, Kossionides, E, Krticka, M, Lampoudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martínez, T, Massimi, C, Mengoni, A, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vazl, P, Ventura, A, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wiescher, M, and Wisshak, K

Subjects
inorganic chemicals, biological sciences, Nuclear Theory, technology, industry, and agriculture, lipids (amino acids, peptides, and proteins), Nuclear Physics - Experiment, Nuclear Experiment
Abstract

Neutron-induced fission cross-sections of actinides have been recently measured at the neutron time of flight facility n_TOF at CERN in the frame of a research project involving isotopes relevant for nuclear astrophysics and nuclear technologies. Fission fragments are detected by a gas counter with good discrimination between nuclear fission products and background events. Neutron-induced fission cross-sections of 233U and 243Am were determined relative to 235U. The present paper reports the results obtained at neutron energies between 0.5 and 20 MeV.

Published
2011

10. Neutron physics of the Re/Os clock. 1. Measurement of the (n, gamma) cross sections of Os-186, Os-187, Os-188 at the CERN n_TOF facility

Author

Mosconi, M, Fujii, K, Mengoni, A, Domingo-Pardo, C, Kappeler, F, Abbondanno, U, Aerts, G, Alvarez-Pol, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calviani, M, Calvino, F, Cano-Ott, D, Capote, R, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dolfini, R, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Isaev, S, Jericha, E, Kadi, Y, Karamanis, D, Karadimos, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Massimi, C, Mastinu, P, Milazzo, P M, Moreau, C, Neves, F, Oberhummer, H, Oshima, M, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, Alberto, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2010

11. Neutron-induced fission cross section of U-234 and Np-237 measured at the CERN Neutron Time-of-Flight (n_TOF) facility

Author

Paradela, C, Tassan-Got, L, Audouin, L, Berthier, B, Duran, I, Ferrant, L, Isaev, S, Le Naour, C, Stephan, C, Tarrio, D, Trubert, D, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Badurek, G, Baumann, P, Becvar, F, Berthoumieux, E, Calvino, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapico, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Domingo-Pardo, C, Dridi, W, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Goncalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Kadi, Y, Kappeler, F, Karadimos, D, Karamanis, D, Kerveno, M, Koehler, P, Kossionides, E, Krticka, M, Lampoudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez, T, Massimi, C, Mastinu, P, Mengoni, A, Milazzo, P M, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Oshima, M, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Tagliente, G, Tain, J L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, Alberto, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2010

12. The Zr-92 (n, gamma) reaction and its implications for stellar nucleosynthesis

Author

Tagliente, G, Milazzo, P M, Fujii, K, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calvino, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapico, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Domingo-Pardo, C, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrari, A, Ferreira-Marques, R, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Kappeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez, T, Massimi, C, Mastinu, P, Mengoni, A, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Stephan, C, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2010

13. Au-197 (n, gamma) cross section in the resonance region

Author

Massimi, C, Domingo-Pardo, C, Vannini, G, Audouin, L, Guerrero, C, Abbondanno, U, Aerts, G, Alvarez, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Calvino, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapico, C, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dridi, W, Duran, I, Eleftheriadis, C, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fujii, K, Furman, W, Galanopoulos, S, Goncalves, I F, Gonzalez-Romero, E, Gramegna, F, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Jericha, E, Kappeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Koehler, P, Kossionides, E, Krticka, M, Lampoudis, C, Lederer, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martinez, T, Mastinu, P, Mendoza, E, Mengoni, A, Milazzo, P M, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Pancin, J, Papadopoulos, C, Paradela, C, Pavlik, A, Pavlopoulos, P, Perdikakis, G, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Sarchiapone, L, Sarmento, R, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vaz, P, Ventura, A, Villamarin, D, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2010

14. Neutron physics of the Re/Os clock. 3. Resonance analyses and stellar (n, gamma) cross sections of Os-186, Os-187, Os-188

Author

Fujii, K, Mosconi, M, Mengoni, A, Domingo-Pardo, C, Kappeler, F, Abbondanno, U, Aerts, G, Alvarez-Pol, H, Alvarez-Velarde, F, Andriamonje, S, Andrzejewski, J, Assimakopoulos, P, Audouin, L, Badurek, G, Baumann, P, Becvar, F, Belloni, F, Berthoumieux, E, Bisterzo, S, Calviani, M, Calvino, F, Cano-Ott, D, Capote, R, Carrillo de Albornoz, A, Cennini, P, Chepel, V, Chiaveri, E, Colonna, N, Cortes, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Dolfini, R, Dridi, W, Duran, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Fitzpatrick, L, Frais-Koelbl, H, Furman, W, Gallino, R, Goncalves, I, Gonzalez-Romero, E, Goverdovski, A, Gramegna, F, Griesmayer, E, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martinez, A, Igashira, M, Isaev, S, Jericha, E, Kadi, Y, Karamanis, D, Karadimos, D, Kerveno, M, Ketlerov, V, Koehler, P, Konovalov, V, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marques, L, Marrone, S, Massimi, C, Mastinu, P, Milazzo, P M, Moreau, C, Neves, F, Oberhummer, H, Oshima, M, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rosetti, M, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Sarchiapone, L, Savvidis, I, Stephan, C, Tagliente, G, Tain, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, Alberto, Villamarin, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment
Published
2010

15. Experimental study of the 91Zr(n gamma) reaction up to 26 keV

Author

Tagliente, G, Milazzo, P M, Fujii, K, Aerts, G, Abbondanno, U, Alvarez, H, Alvarez-Velarde, F, Andriamonje, Samuel A, Andrzejewski, J, Assimakopoulos, Panayiotis, Audouin, L, Badurek, G, Baumann, P, Becvár, F, Belloni, F, Berthoumieux, E, Calviño, F, Calviani, M, Cano-Ott, D, Capote, R, Carrapiço, C, Cennini, P, Chepel, V, Colonna, N, Cortés, G, Couture, A, Cox, J, Dahlfors, M, David, S, Dillmann, I, Domingo-Pardo, C, Dridi, W, Durán, I, Eleftheriadis, C, Embid-Segura, M, Ferrant, L, Ferrari, A, Ferreira-Marques, R, Furman, W, Gonçalves, I, Gonzalez-Romero, E, Gramegna, F, Guerrero, C, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martínez, A, Igashira, M, Jericha, E, Kappeler, F, Kadi, Y, Karadimos, D, Karamanis, D, Kerveno, M, Köhler, P, Kossionides, E, Krticka, M, Lamboudis, C, Leeb, H, Lindote, A, Lopes, I, Lozano, M, Lukic, S, Marganiec, J, Marrone, S, Martínez, T, Massimi, C, Mastinu, P, Mengoni, A, Moreau, C, Mosconi, M, Neves, F, Oberhummer, H, O'Brien, S, Pancin, J, Papachristodoulou, C, Papadopoulos, C, Paradela, C, Patronis, N, Pavlik, A, Pavlopoulos, P, Perrot, L, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poch, A, Praena-Rodriguez, J, Pretel, C, Quesada, J, Rauscher, T, Reifarth, R, Rubbia, C, Rudolf, G, Rullhusen, P, Salgado, J, Santos, C, Sarchiapone, L, Savvidis, I, Stéphan, C, Taín, J L, Tassan-Got, L, Tavora, L, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarín, D, Vincente, M C, Vlachoudis, V, Vlastou, R, Voss, F, Walter, S, Wiescher, M, Wisshak, K, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), Laboratori Nazionali di Legnaro (LNL), Istituto Nazionale di Fisica Nucleare (INFN), European Organization for Nuclear Research (CERN), 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), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (INFN, Sezione di Bologna), nTOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 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), and National Institute for Nuclear Physics (INFN)

Subjects
statistical-model, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, cern, transmission, nucleosynthesis, capture cross-sections, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 25.40.Lw, 25.70.Ef, 27.60.+j, 97.10.Cv, n-tof, evolution, Nuclear Physics - Experiment, giant branch stars, Nuclear Experiment, neutron-capture, s-process
Abstract

The neutron capture cross sections of the Zr isotopes are relevant to studies in nuclear structure, nuclear astrophysics, and nuclear technology. The valence neutron of (91)Zr with respect to the neutron magic nucleus (90)Zr has interesting implications for the statistical analysis in the proximity of shell closures. In stellar nucleosynthesis, the Zr isotopes are important for the s-process reaction flow between the Fe seeds and the heavier isotopes. Because of its relatively small (n, gamma) cross sections, Zr represents also an interesting structural material for nuclear reactors. For the same reason, these cross sections are difficult to measure and reliable data are sparse. Therefore, the (n, gamma) cross sections of the Zr isotopes have been remeasured at the CERN n_TOF facility. Thanks to its high instantaneous flux, good energy resolution, and low background, this facility is particularly suited for the determination of small, resonance-dominated cross sections. In this work, results for the (91)Zr(n, gamma) (92)Zr reaction are reported in the neutron energy range from thermal to 26 keV. In this region, accurate data of 157 resonances could be obtained, 33 of these resonances are not present in the main databases and/or were observed for the first time. Physical Review C

Published
2008

16. Neutron capture cross section of 90Zr: Bottleneck in the s-process reaction flow

Author

Tagliente, G., Fujii, K., Milazzo, P.M., Moreau, C., Aerts, G., Abbondanno, U., Álvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Bečvá&#345, F., Berthoumieux, E., Bisterzo, S., Calviño, F., Calviani, M., Cano-Ott, D., Capote, R., Carrapiço, C., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillman, I., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, Anthony, Ferreira-Marques, R., Furman, W., Gallino, R., Goncalves, I., Gonzalez-Romero, E., Gramegna, F., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Karamanis, D., Kerveno, M., Koehler, P., Kossionides, E., Krtička, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marrone, S., Martínez, T., Massimi, C., Mastinu, P., Mengoni, A., Mosconi, M., Neves, F., Oberhummer, H., O'Brien, S., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., T. Pigni, M., Plag, R., Plompen, A., Plukis, A., Poch, A., Praena, J., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Savvidis, I., Stephan, C., Tain, J.L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., Wisshak, K., Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 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), Pole Universitaire Leonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), nTOF, 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), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
zr isotopes, facility, Astrophysics::High Energy Astrophysical Phenomena, nucleosynthesis, valence component, system, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 25.40.Lw, 25.70.Ef, 27.60.+j, 97.10.Cv, n-tof, massive stars, energy range, evolution, Nuclear Physics - Experiment, giant branch stars, Nuclear Experiment
Abstract

The neutron capture cross sections of the Zr isotopes have important implications in nuclear astrophysics and for reactor design. The small cross section of the neutron magic nucleus (90)Zr, which accounts for more than 50% of natural zirconium represents one of the key isotopes for the stellar s-process, because it acts as a bottleneck in the neutron capture chain between the Fe seed and the heavier isotopes. The same element, Zr, also is an important component of the structural materials used in traditional and advanced nuclear reactors. The (n, gamma) cross section has been measured at CERN, using the n_TOF spallation neutron source. In total, 45 resonances could be resolved in the neutron energy range below 70 keV, 10 being observed for the first time thanks to the high resolution and low backgrounds at n_TOF. On average, the Gamma(gamma) widths obtained in resonance analyses with the R-matrix code SAMMY were 15% smaller than reported previously. By these results, the accuracy of the Maxwellian averaged cross section for s-process calculations has been improved by more than a factor of 2. Physical Review C

Published
2008

17. Measurement of the radiative neutron capture cross section of 206Pb and its astrophysical implications

Author

Domingo-Pardo, C., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Berthoumieux, E., Bisterzo, S., Calvino, F., Calviani, M., Cano-Ott, D., Capote, R., Carrapico, C., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillman, I., Dolfini, R., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Furman, W., Gallino, R., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, M., Jericha, E., Kappeler, F., Kadi, Y., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Kossionides, E., Krticka, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marrone, S., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, P.M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., Oshima, M., O'Brien, S., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Plag, R., Plompen, A., Plukis, A., Poch, A., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Sarchiapone, L., Savvidis, I., Stephan, C., Tagliente, G., Tain, J.L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., Wisshak, K., Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), 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), nTOF, 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), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
25.40.Lw,27.80.+w,97.10.Cv, Neutron capture cross sections, Pulse height weighting technique, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, C6D6 scintillation detectors, Nuclear Physics - Experiment, Nuclear astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Monte Carlo simulations
Abstract

The (n, gamma) cross section of 206Pb has been measured at the CERN n_TOF facility with high resolution in the energy range from 1 eV to 600 keV by using two optimized C6D6 detectors. In the investigated energy interval about 130 resonances could be observed, from which 61 had enough statistics to be reliably analyzed via the R-matrix analysis code SAMMY. Experimental uncertainties were minimized, in particular with respect to (i) angular distribution effects of the prompt capture gamma-rays, and to (ii) the TOF-dependent background due to sample-scattered neutrons. Other background components were addressed by background measurements with an enriched 208Pb sample. The effect of the lower energy cutoff in the pulse height spectra of the C6D6 detectors was carefully corrected via Monte Carlo simulations. Compared to previous 206Pb values, the Maxwellian averaged capture cross sections derived from these data are about 20% and 9% lower at thermal energies of 5 keV and 30 keV, respectively. These new results have a direct impact on the s-process abundance of 206Pb, which represents an important test for the interpretation of the cosmic clock based on the decay of 238U., Comment: 11 pages, 8 figures, paper to be submitted to Phys. Rev. C

Published
2007

18. Measurement of the neutron capture cross section of the s-only isotope 204Pb from 1 eV to 440 keV

Author

DOMINGO-PARDO, C., ABBONDANNO, U., AERTS, G., ÁLVAREZ-POL, H., ALVAREZ-VELARDE, F., ANDRIAMONJE, S., ANDRZEJEWSKI, J., ASSIMAKOPOULOS, P., AUDOUIN, L., BADUREK, G., BAUMANN, P., BE&#269VÁ, F., BERTHOUMIEUX, E., BISTERZO, S., CALVIÑO, F., CANO-OTT, D., CAPOTE, R., CARRAPIÇO, C., CENNINI, P., CHEPEL, V., CHIAVERI, E., COLONNA, N., CORTES, G., COUTURE, A., COX, J., DAHLFORS, M., DAVID, S., DILLMANN, I., DOLFINI, R., DRIDI, W., DURAN, I., ELEFTHERIADIS, C., EMBID-SEGURA, M., FERRANT, L., FERRARI, Anthony, FERREIRA-MARQUES, R., FITZPATRICK, L., FRAIS-KOELBL, H., FUJII, K., FURMAN, W., GALLINO, R., GONCALVES, I., GONZALEZ-ROMERO, E., GOVERDOVSKI, A., GRAMEGNA, F., GRIESMAYER, E., GUERRERO, C., GUNSING, F., HAAS, B., HAIGHT, R., HEIL, M., HERRERA-MARTINEZ, A., IGASHIRA, M., ISAEV, S., JERICHA, E., KADI, Y., KÄPPELER, F., KARAMANIS, D., KARADIMOS, D., KERVENO, M., KETLEROV, V., KOEHLER, P., KONOVALOV, V., KOSSIONIDES, E., KRTIČKA, M., LAMBOUDIS, C., LEEB, H., LINDOTE, A., LOPES, I., LOZANO, M., LUKIC, S., MARGANIEC, J., MARRONE, S., MASTINU, P., MENGONI, A., M. MILAZZO, P., MOREAU, C., MOSCONI, M., NEVES, F., OBERHUMMER, H., OSHIMA, M., O'BRIEN, S., PANCIN, J., PAPACHRISTODOULOU, C., PAPADOPOULOS, C., PARADELA, C., PATRONIS, N., PAVLIK, A., PAVLOPOULOS, P., PERROT, L., PLAG, R., PLOMPEN, A., PLUKIS, A., POCH, A., PRETEL, C., QUESADA, J., RAUSCHER, T., REIFARTH, R., ROSETTI, M., RUBBIA, C., RUDOLF, G., RULLHUSEN, P., SALGADO, J., SARCHIAPONE, L., SAVVIDIS, I., STEPHAN, C., TAGLIENTE, G., L. TAIN, J., TASSAN-GOT, L., TAVORA, L., TERLIZZI, R., VANNINI, G., VAZ, P., VENTURA, A., VILLAMARIN, D., VINCENTE, M.C., VLACHOUDIS, V., VLASTOU, R., VOSS, F., WALTER, S., WENDLER, H., WIESCHER, M., WISSHAK, K., C. Domingo-Pardo, U. Abbondanno, G. Aert, H. Álvarez-Pol, F. Alvarez-Velarde, S. Andriamonje, J. Andrzejewski, P. Assimakopoulo, L. Audouin, G. Badurek, P. Baumann, F. Becvár, E. Berthoumieux, S. Bisterzo, F. Calviño, D. Cano-Ott, R. Capote, C. Carrapiço, P. Cennini, V. Chepel, E. Chiaveri, N. Colonna, G. Corte, A. Couture, J. Cox, M. Dahlfor, S. David, I. Dillman, R. Dolfini, W. Dridi, I. Duran, C. Eleftheriadi, M. Embid-Segura, L. Ferrant, A. Ferrari, R. Ferreira-Marque, L. Fitzpatrick, H. Frais-Koelbl, K. Fujii, W. Furman, R. Gallino, I. Goncalve, E. Gonzalez-Romero, A. Goverdovski, F. Gramegna, E. Griesmayer, C. Guerrero, F. Gunsing, B. Haa, R. Haight, M. Heil, A. Herrera-Martinez, M. Igashira, S. Isaev, E. Jericha, Y. Kadi, F. Käppeler, D. Karamani, D. Karadimo, M. Kerveno, V. Ketlerov, P. Koehler, V. Konovalov, E. Kossionide, M. Krtička, C. Lamboudi, H. Leeb, A. Lindote, I. Lope, M. Lozano, S. Lukic, J. Marganiec, S. Marrone, P. Mastinu, A. Mengoni, P. M. Milazzo, C. Moreau, M. Mosconi, F. Neve, H. Oberhummer, M. Oshima, S. O'Brien, J. Pancin, C. Papachristodoulou, C. Papadopoulo, C. Paradela, N. Patroni, A. Pavlik, P. Pavlopoulo, L. Perrot, R. Plag, A. Plompen, A. Pluki, A. Poch, C. Pretel, J. Quesada, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusen, J. Salgado, L. Sarchiapone, I. Savvidi, C. Stephan, G. Tagliente, J. L. Tain, L. Tassan-Got, L. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin, M. C. Vincente, V. Vlachoudi, R. Vlastou, F. Vo, S. Walter, H. Wendler, M. Wiescher, K. Wisshak(n_TOF Collaboration), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), 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), 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), nTOF, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
25.40.Lw, 27.80.+w, 97.10.Cv, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], NEUTRON TIME OF FLIGHT, Nuclear Experiment, S-PROCESS, NEUTRON CAPTURE CROSS SECTION
Abstract

The neutron capture cross section of 204Pb has been measured at the CERN n_TOF installation with high resolution in the energy range from 1 eV to 440 keV. An R-matrix analysis of the resolved resonance region, between 1 eV and 100 keV, was carried out using the SAMMY code. In the interval between 100 keV and 440 keV we report the average capture cross section. The background in the entire neutron energy range could be reliably determined from the measurement of a 208Pb sample. Other systematic effects in this measurement could be investigated and precisely corrected by means of detailed Monte Carlo simulations. We obtain a Maxwellian average capture cross section for 204Pb at kT=30 keV of 79(3) mb, in agreement with previous experiments. However our cross section at kT=5 keV is about 35% larger than the values reported so far. The implications of the new cross section for the s-process abundance contributions in the Pb/Bi region are discussed., Comment: 8 pages, 3 figures, article submitted to Phys. Rev. C

Published
2007

19. New measurement of neutron capture resonances of 209Bi

Author

Domingo-Pardo, C., Abbondanno, U., Aerts, G., Alvarez-Pol, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Becvar, F., Berthoumieux, E., Calvino, F., Cano-Ott, D., Capote, R., Carrillode Albornoz, A., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillman, I., Dolfini, R., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Furman, W., Gallino, R., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, S., Jericha, E., Kadi, Y., Kappeler, F., Karamanis, D., Karadimos, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Kossionides, E., Krticka, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Mastinu, P., Mengoni, A., Milazzo, P.M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., Oshima, M., O'Brien, S., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Plag, R., Plompen, A., Plukis, A., Poch, A., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Sarchiapone, L., Savvidis, I., Stephan, C., Tagliente, G., Tain, J.L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, Alberto, Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., and Wisshak, K.

Subjects
Nuclear Physics - Experiment, Nuclear Experiment
Abstract

The neutron capture cross section of Bi209 has been measured at the CERN n TOF facility by employing the pulse-height-weighting technique. Improvements over previous measurements are mainly because of an optimized detection system, which led to a practically negligible neutron sensitivity. Additional experimental sources of systematic error, such as the electronic threshold in the detectors, summing of gamma-rays, internal electron conversion, and the isomeric state in bismuth, have been taken into account. Gamma-ray absorption effects inside the sample have been corrected by employing a nonpolynomial weighting function. Because Bi209 is the last stable isotope in the reaction path of the stellar s-process, the Maxwellian averaged capture cross section is important for the recycling of the reaction flow by alpha-decays. In the relevant stellar range of thermal energies between kT=5 and 8 keV our new capture rate is about 16% higher than the presently accepted value used for nucleosynthesis calculations. At this low temperature an important part of the heavy Pb-Bi isotopes are supposed to be synthesized by the s-process in the He shells of low mass, thermally pulsing asymptotic giant branch stars. With the improved set of cross sections we obtain an s-process fraction of 19(3)% of the solar bismuth abundance, resulting in an r-process residual of 81(3)%. The present (n,gamma) cross-section measurement is also of relevance for the design of accelerator driven systems based on a liquid metal Pb/Bi spallation target. The neutron capture cross section of Bi209 has been measured at the CERN n TOF facility by employing the pulse-height-weighting technique. Improvements over previous measurements are mainly because of an optimized detection system, which led to a practically negligible neutron sensitivity. Additional experimental sources of systematic error, such as the electronic threshold in the detectors, summing of gamma-rays, internal electron conversion, and the isomeric state in bismuth, have been taken into account. Gamma-ray absorption effects inside the sample have been corrected by employing a nonpolynomial weighting function. Because Bi209 is the last stable isotope in the reaction path of the stellar s-process, the Maxwellian averaged capture cross section is important for the recycling of the reaction flow by alpha-decays. In the relevant stellar range of thermal energies between kT=5 and 8 keV our new capture rate is about 16% higher than the presently accepted value used for nucleosynthesis calculations. At this low temperature an important part of the heavy Pb-Bi isotopes are supposed to be synthesized by the s-process in the He shells of low mass, thermally pulsing asymptotic giant branch stars. With the improved set of cross sections we obtain an s-process fraction of 19(3)% of the solar bismuth abundance, resulting in an r-process residual of 81(3)%. The present (n,gamma) cross-section measurement is also of relevance for the design of accelerator driven systems based on a liquid metal Pb/Bi spallation target.

Published
2006

20. Neutron capture cross section of 232Th measured at the n_TOF facility at CERN in the unresolved resonance region up to 1 MeV

Author

Aerts, G., Abbondanno, U., Álvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Be Vá, F., Berthoumieux, E., Calviño, F., Cano-Ott, D., Capote, R., Carrillo De Albornoz, A., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillman, I., Dolfini, R., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, Anthony, Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Furman, W., Goncalves, I., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, S., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Kossionides, E., Krti Ka, M., Lamboudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Mastinu, P., Mengoni, A., Milazzo, P.M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O'Brien, S., Oshima, M., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, A., Poch, A., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Sarchiapone, L., Savvidis, I., Stephan, C., Taliente, G., Tain, J.L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., Wisshak, K., Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), 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), 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), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), nTOF, 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), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
25.40.Lw, 25.40.Ny, 28.20.Fc, Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

We have measured the neutron capture reaction yield of 232Th$ at the neutron time-of-flight facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The average capture cross section has been extracted in the energy range from 4 keV up to 1 MeV with an overall accuracy better than 4%. An independent IAEA evaluation shows good agreement with the data. The average cross section has been expressed in terms of average resonance parameters using the partial waves \ell =0,1, and 2.

Published
2006

21. Measurement of the 151Sm(n,) cross section from 0.6 eV to 1 MeV via the neutron time-of-flight technique at the CERN n_TOF facility

Author

Marrone, S, Abbondanno, U, Aerts, G, Alvarez-Velarde, F, Alvarez-Pol, H, Andriamonje, Samuel A, Andrzejewski, J, Badurek, G, Baumann, P, Voss, F, Käppeler, F K, Krticka, M, Raman, S, Mengoni, A, Gallino, R, Goncalves, I S, Gonzalez-Romero, S, Goverdovski, A A, Gramegna, F, Griesmayer, E, Gunsing, F, Haas, B, Haight, R, Heil, M, Herrera-Martínez, A, Isaev, S, Jericha, E, Kadi, Y, Karadimos, D, Kerveno, M, Ketlerov, V, Köhler, P E, Konovalov, V, Kritcka, M, Lamboudis, P, Leeb, H, Lindote, A, Lopes, M I, Lozano, M, Lukic, S, Marganiec, J, Martínez-Val, J M, Mastinu, P F, Milazzo, P M, Molina-Coballes, A, Moreau, C, Mosconi, M, Neves, F, Oberhummer, Heinz, O'Brien, S, Pancin, J, Papaevangelou, T, Paradela, C, Pavlik, A, Pavlopoulos, P, Perlado, J M, Perrot, L, Pignatari, M, Pigni, M T, Plag, R, Plompen, A, Plukis, A, Poche, A, Policarpo, Armando, Pretel, C, Queada, J M, Rapp, W, Rauscher, T, Reifarth, A, Rosetti, M, Rubbia, Carlo, Rudolf, G, Rullhusen, P, Salgado, J, Soares, J C, Stéphan, C, Tagliente, G, Taín, J L, Tassan-Got, L, Tavora, L M N, Terlizzi, R, Vannini, G, Vaz, P, Ventura, A, Villamarín-Fernández, D, Vincente-Vincente, M, Vlachoudis, V, Wendler, H, Wiescher, M, and Wisshak, K

Subjects
Nuclear Physics - Experiment, Particle Physics - Experiment
Published
2006

22. Measurement and resonance analysis of the 237Np neutron capture cross section

Author

M. Embid-Segura, Manuel Lozano, L. Perrot, R. Lossito, V. Chepel, Ralf Plag, Rene Reifarth, P. Baumann, I. Duran, P. Cennini, E. Kossionides, W.I. Furman, M. Mosconi, G. Aerts, A. Lindote, C. Stephan, C. A. Papachristodoulou, Javier Praena, P. Pavlopoulos, S. O'Brien, J. M. Quesada, A. Herrera-Martinez, N. Patronis, R. Terlizzi, F. Voss, F. Becvar, C. Eleftheriadis, M. C. Vicente, Alberto Mengoni, A. J. M. Plompen, P. M. Milazzo, A. Carrillo de Albornoz, G. Rudolf, L. Ferrant, M. Igashira, I. Lopes, Yacine Kadi, Nicola Colonna, D. Villamarin, P. E. Koehler, L. Fitzpatrick, J. Salgado, Marco T. Pigni, A. Poch, M. Oshima, J. L. Tain, J. Andrzejewski, Carlos Guerrero, Carlo Rubbia, Alfredo Ferrari, R. Ferreira-Marques, S. Isaev, Heinz Oberhummer, V. Vlachoudis, U. Abbondanno, L. Tavora, V. Konovalov, E. Griesmayer, J. Cox, Laurent Tassan-Got, S. David, G. Cortes, P. Rullhusen, G. Tagliente, C. Massimi, E. Jericha, R. C. Haight, Roberto Capote, V. Ketlerov, C. Carrapiço, P.A. Assimakopoulos, M. Kerveno, F. Neves, L. Audouin, F. Käppeler, G. Vannini, E. Gonzalez-Romero, Michael Wiescher, I. Goncalves, Thomas Rauscher, D. Karamanis, I. Dillmann, C. Moreau, D. Karadimos, Michael Heil, S. Walter, C. T. Papadopoulos, F. Gramegna, A. Plukis, A. Goverdovski, C. Santos, F. Alvarez-Velarde, Gerald Badurek, W. Dridi, R. Dolfini, M. Rosetti, S. Marrone, E. Mendoza, B. Haas, J. Marganiec, S. Andriamonje, R. Vlastou, P. F. Mastinu, E. Berthoumieux, I. Savvidis, M. Calviani, H. Frais-Koelbl, C. Paradela, S. Lukic, L. Marques, M. Krtička, C. Pretel, T. Martinez, K. Fujii, Fabio Belloni, F. Calviño, H. Leeb, L. Sarchiapone, M. Dahlfors, P. Vaz, Alberto Ventura, Aaron Couture, C. Lampoudis, A. Pavlik, C. Domingo-Pardo, F. Gunsing, J. Pancin, E. Chiaveri, D. Cano-Ott, K. Wisshak, H. Wendler, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Aval du cycle et Energie Nucléaire (ACEN), 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)-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), 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), Pôle Universitaire Léonard de Vinci, Pôle Universitaire Léonard de Vinci (PULV), TOF, Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, European Union (UE), Ministerio de Educación y Ciencia (MEC). España, Guerrero C., Cano-Ott D., Mendoza E., Abbondanno U., Aerts G., Alvarez-Velarde F., Andriamonje S., Andrzejewski J., Assimakopoulos P., Audouin L., Badurek G., Baumann P., Becvar F., Belloni F., Berthoumieux E., Calvino F., Calviani M., Capote R., Carrapico C., Carrillo de Albornoz A., Cennini P., Chepel V., Chiaveri E., Colonna N., Cortes G., Couture A., Cox J., Dahlfors M., David S., Dillmann I., Dolfini R., Domingo-Pardo C., Dridi W., Duran I., Eleftheriadis C., Embid-Segura M., Ferrant L., Ferrari A., Ferreira-Marques R., Fitzpatrick L., Frais-Koelbl H., Fujii K., Furman W., Goncalves I., Gonzalez-Romero E., Goverdovski A., Gramegna F., Griesmayer E., Gunsing F., Haas B., Haight R., Heil M., Herrera-Martinez A., Igashira M., Isaev S., Jericha E., Kaeppeler F., Kadi Y., Karadimos D., Karamanis D., Ketlerov V., Kerveno M., Koehler P., Konovalov V., Kossionides E., Krticka M., Lampoudis C., Leeb H., Lindote A., Lopes I., Lossito R., Lozano M., Lukic S., Marganiec J., Marques L., Marrone S., Martinez T., Massimi C., Mastinu P., Mengoni A., Milazzo P. M., Moreau C., Mosconi M., Neves F., Oberhummer H., O'Brien S., Oshima M., Pancin J., Papachristodoulou C., Papadopoulos C., Paradela C., Patronis N., Pavlik A., Pavlopoulos P., Perrot L., Pigni M. T., Plag R., Plompen A., Plukis A., Poch A., Praena J., Pretel C., Quesada J., Rauscher T., Reifarth R., Rosetti M., Rubbia C., Rudolf G., Rullhusen P., Salgado J., Santos C., Sarchiapone L., Savvidis I., Stephan C., Tagliente G., Tain J. L., Tassan-Got L., Tavora L., Terlizzi R., Vannini G., Vaz P., Ventura A., Villamarin D., Vicente M. C., Vlachoudis V., Vlastou R., Voss F., Walter S., Wendler H., Wiescher M., Wisshak K., 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), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, 010308 nuclear & particles physics, CAPTURE CROSS-SECTION, Detector, Nuclear data, BARIUM-FLORIDE CALORIMETER, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Resonance (particle physics), Calorimeter, Nuclear physics, Cross section (physics), 0103 physical sciences, Range (statistics), Neutron cross section, Nuclear Physics - Experiment, GAMMA SPECTROSCOPY, 010306 general physics, EMERGING NUCLEAR TECHNOLOGIES
Abstract

The neutron capture cross section of 237Np was measured between 0.7 and 500 eV at the CERN n-TOF facility using the 4π BaF2 Total Absorption Calorimeter. The experimental capture yield was extracted minimizing all the systematic uncertainties and was analyzed together with the most reliable transmission data available using the sammy code. The result is a complete set of individual as well as average resonance parameters [D0=0.56(2) eV, Γγ=40.9(18) meV, 104S0=0.98(6), R ′=9.8(6) fm]. The capture cross section obtained in this work is in overall agreement with the evaluations and the data of Weston and Todd, thus showing sizable differences with respect to previous data from Scherbakov and large discrepancies with data Kobayashi. The results indicate that a new evaluation combining the present capture data with reliable transmission data would allow reaching an accuracy better than 4%, in line with the uncertainty requirements of the nuclear data community for the design and operation of current and future nuclear devices. Unión Europea NTOF-NDXADS IP-EUROTRANS CIEMAT-ENRESA Plan Nacional de Física de Partículas (España) FPA2005-06918-C03-01 Programa Consolider-Ingenio 2010 (España)

Published
2012

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