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443 results on '"J., Benlliure"'

401. A low-mass neutron flux monitor for the n_TOF facility at CERN

Author

S. David, G. Tagliente, G. Vannini, F. Käppeler, E. Savvidis, F. Rejmund, M. Terrani, V. Chepel, L. Ferrant, A. Lindote, D. Karamanis, P. Baumann, T. Papaevangelou, E. Chiaveri, Per Carlson, A. Perez-Parra, P. E. Koehler, P. F. Mastinu, Corrie S. Moreau, J. Salgado, V. Peskov, B. Berthier, A. Poch, M. Loriggiola, S. Andriamonje, J.C. Soares, G. Cortes, C. Borcea, C. Eleftheriadis, M. Embid-Segura, M. Vincente-Vincente, W.I. Furman, H. Leeb, A. Goverdovski, E. Mínguez, F. Neves, L. Ferreira-Lourenco, Y. Kadi, D. Villamarin-Fernandez, H. Frais-Koelbl, V. Lacoste, P. M. Milazzo, D. Cortina, Manuel Lozano, Gerald Badurek, A. Angelopoulos, Roberto Capote, P.A. Assimakopoulos, F. Voss, F. Becvar, I. Duran, N. Tsangas, M. Rosetti, R. C. Haight, Nicola Colonna, K. Wisshak, H. Álvarez, J. L. Tain, L. Zanini, E. Jericha, Thomas Rauscher, C. Paradela, Vasilis Vlachoudis, R. Dolfini, M.I. Lopes, R. Ferreira-Marques, R. Vlastou, H. Beer, L. Perrot, C. Tapia, I. F. Gonçalves, H. Wendler, K.G. Ioannides, F. Gramegna, Saed Dababneh, George Kitis, E. Kossionides, F. Gunsing, E. Boscolo-Marchi, Sigfrido Boffi, Michael Wiescher, A. Ventura, D. Cano-Ott, E. Gonzalez-Romero, Y. Giomataris, Ralf Plag, J. Benlliure, Marco Radici, N. Janeva, C. Rubbia, P. Pavlopoulos, Ch.O. Bacri, A. Plukis, E. Griesmayer, A.J.P.L. Policarpo, Subramanian Raman, S. Lukic, N. Bustreo, S. Marrone, A. J. M. Plompen, José M. Martínez-Val, U. Abbondanno, José Manuel Perlado, Heinz Oberhummer, G. Rudolf, W. Rapp, Michael Heil, P. Calviño, E. Berthomieux, V. Konovalov, C. Pretel, James L. Cox, V. Ketlerov, G. Aerts, P. Cennini, A. Herrera-Martinez, Arnaud Ferrari, C. Stephan, S. O'Brien, Alberto Mengoni, R. Terlizzi, A. Molina-Coballes, L. Tavora, P. Rullhusen, J. Pancin, S. Markov, S. Marigo, M. Dahlfors, P. Vaz, Aaron Couture, A. Pavlik, C. Domingo-Pardo, Rene Reifarth, A. Kelic, J. M. Quesada, L. Tassan-Got, C. Coceva, 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 Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and TOF

Subjects
TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Silicon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, ComputingMethodologies_ARTIFICIALINTELLIGENCE, Nuclear physics, 0103 physical sciences, Neutron, 010306 general physics, Nuclear Experiment, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Scattering, Detector, TheoryofComputation_GENERAL, Neutron radiation, Neutron capture, ComputingMethodologies_PATTERNRECOGNITION, chemistry, Physics::Accelerator Physics, Low Mass
Abstract

A small-mass system has been developed for monitoring the flux of neutrons with energy up to 1 MeV at the new time-of-flight facility at CERN, n_TOF. The monitor is based on a thin Mylar foil with a 6Li deposit, placed in the neutron beam, and an array of Silicon detectors, placed outside the beam, for detecting the products of the 6Li(n, alpha)³H reaction. The small amount of material on the beam ensures a minimal perturbation of the flux and minimizes the background related to scattered neutrons. Moreover, a further reduction of the gamma-ray background has been obtained by constructing the scattering chamber hosting the device in carbon fibre. A detailed description of the flux monitor is here presented, together with the characteristics of the device, in terms of efficiency, resolution and induced background. The use of the monitor in the measurement of neutron capture cross-sections at n_TOF is discussed

402. Residual nuclei produced by spallation reactions

Author

F. Rejmund, L. Ferran, J. Conne, S. Leray, R. A. Mewaldt, B. Fernandez, S. Czajkowski, J. Pereira, J. E. Ducret, J. S. George, Fairouz Hammache, L. Audouin, M. Bernas, Mark E. Wiedenbeck, B. Jurado, M.S. Pravikoff, Arnd R. Junghans, J.-C. David, A. Heinz, Nathan Eugene Yanasak, W. Wlazlo, C. Villagrasa, C.O. Bacri, B. Berthier, K.-H. Schmidt, P. Armbruster, J. Benlliure, M. V. Ricciardi, Enrique Casarejos, K. Sümmerer, L. Tassan-Got, C. Stephan, Thomas Faestermann, L. Donadille, R. Legrain, J. Taieb, A. Boudard, M. Fernandez, C. Volant, F. Vivés, Kerttuli Helariutta, D. Karamanis, B. Mustapha, and T. Enqvist

Subjects
Nuclear physics, Nuclear reaction, Chemistry, Radiochemistry, General Physics and Astronomy, Spallation
Abstract

Une connaissance precise de tous les noyaux produits par spallation est necessaire pour predire la radioactivite et les modifications chimiques induites dans une cible de spallation. Des donnees experimentales obtenues par la technique de la cinematique inverse sont presentees. De nouveaux resultats preliminaires plus complets sont aussi presentes. Ces mesures de production d'isotopes dans le fer permettent d'estimer directement les alterations et dommages generes dans une fenetre metallique d'un ADS.

403. Shell effects and pairing correlations in fission investigated with radioactive beams

Author

J. Benlliure, Arnd R. Junghans, and K.-H. Schmidt

Subjects
Physics, Nuclear and High Energy Physics, Cold fission, Cluster decay, Fission, Nuclear Theory, Hadron, Actinide, Kinetic energy, Nuclear physics, Pairing, Nuclear fusion, Atomic physics, Nuclear Experiment
Abstract

The secondary-beam facility at GSI allows to produce a large variety of exotic nuclei at relativistic energies. This technique offers a unique oportunity to investigate systematically fission in inverse kinematics. In the present experiment, the fission properties of more than 70 different actinides and preactinides were investigated at low excitation energy. The elemental yields and kinetic energies of the fission residues present new signatures of shell structure and pairing correlations.

411. The ASY-EOS experiment at GSI: Investigating the symmetry energy at supra-saturation densities

Author

Lunardi, S., Russotto, P., Chartier, M., Cozma, M. D., De Filippo, E., Le Fèvre, A., Gannon, S., Gašparić, I., Kiš, M., Kupny, S., Leifels, Y., Lemmon, R. C., Li, Q., Łukasik, J., Marini, P., Pawłowski, P., Santoro, S., Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al Ajlan, A., Al Garawi, M., Al Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Bassini, R., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Czech, B., Di Toro, M., Famiano, M., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, Riccardo, Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Lasko, P., Lombardo, I., Lynch, W. G., Matthews, Z., May, L., Minniti, T., Mostazo, M., Pagano, A., Papa, M., Pirrone, S., Pleskac, R., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M. B., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H. H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., Bizzeti, P. G., Bucci, C., Chiari, M., Dainese, A., Di Nezza, P., Menegazzo, R., Nannini, A., Signorini, C., Valiente Dobon, J. J., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Russotto, P., Chartier, M., Filippo, E., Fèvre, A., Gannon, S., Gaparić, I., Ki, M., Kupny, S., Leifels, Y., Lemmon, R., Ukasik, J., Marini, P., Pagano, A., Pawowski, P., Santoro, S, Trautmann, W., Veselsky, M., Acosta, L., Adamczyk, M., Al-Ajlan, A., Al-Garawi, M., Al-Homaidhi, S., Amorini, F., Auditore, L., Aumann, T., Ayyad, Y., Baran, V., Basrak, Z., Benlliure, J., Boiano, C., Boisjoli, M., Boretzky, K., Brzychczyk, J., Budzanowski, A., Cardella, G., Cammarata, P., Chajecki, Z., Chbihi, A., Colonna, M., Cozma, D., Czech, B., Toro, M., Famiano, M., Geraci, E., Greco, V., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Krasznahorkay, A., Kurz, N., Guidara, E., Lanzalone, G., Lasko, P., Li, Q., Lombardo, I., Lynch, W., Matthews, Z., May, L., Minniti, T., Mostazo, M., Papa, M., Pirrone, S., Politi, G., Porto, F., Reifarth, R., Reisdorf, W., Riccio, F., Rizzo, F., Rosato, E., Rossi, D., Simon, H., Skwirczynska, I., Sosin, Z., Stuhl, L., Trifirò, A., Trimarchi, M., Tsang, M., Verde, G., Vigilante, M., Wieloch, A., Wigg, P., Wolter, H., Wu, P., Yennello, S., Zambon, P., Zetta, L., Zoric, M., B.A.Li and J.B.Natowitz, P., Russotto, M., Chartier, E., De Filippo, A., Le Fevre, S., Gannon, A., Ga??spari??, M., Ki??, S., Kupny, Y., Leifel, R., Lemmon, J., Lukasik, P., Marini, A., Pagano, P., Pawlowski, S., Santoro, W., Trautmann, M., Veselsky, L., Acosta, M., Adamczyk, A., Al Ajlan, M., Al Garawi, S., Al Homaidhi, F., Amorini, L., Auditore, T., Aumann, Y., Ayyad, V., Baran, Z., Basrak, J., Benlliure, C., Boiano, C., Boisjoli, K., Boretzky, J., Brzychczyk, A., Budzanowski, G., Cardella, P., Cammarata, Z., Chajecki, A., Chbihi, M., Colonna, B., Czech, M., Di Toro, M., Famiano, E., Geraci, L., Grassi, V., Greco, C., Guazzoni, P., Guazzoni, M., Heil, L., Heilborn, R., Introzzi, T., Isobe, K., Kezzar, A., Krasznahorskay, N., Kurz, E., La Guidara, G., Lanzalone, P., Lasko, Q., Li, I., Lombardo, W. G., Lynch, Z., Matthew, L., May, T., Minniti, M., Mostazo, M., Papa, S., Pirrone, G., Politi, F., Porto, R., Reifarth, W., Reisdorf, F., Riccio, F., Rizzo, Rosato, Elio, D., Rossi, H., Simon, I., Skwirczynska, Z., Sosin, A., Trifirò, M., Trimarchi, M. B., Tsang, G., Verde, Vigilante, Mariano, A., Wieloch, P., Wigg, H. H., Wolter, P., Wu, S., Yennello, P., Zambon, L., Zetta, M., Zoric, Cozma, M., De Filippo, E., Le Fèvre, A., Gašparić, I., Kiš, M., Łukasik, J., Pawłowski, P., Santoro, S., Bassini, R., Di Toro, M., La Guidara, E., and Pleskac, R.

Subjects
Particle physics, History, QC1-999, Nuclear Theory, FOS: Physical sciences, and isobaric spin 24.10.Pa Thermal and statistical models, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Education, Nuclear physics, Physics and Astronomy (all), nuclear physics, heavy-ions, symmetry energy, Au+Au collisions, Neutron, Nuclear Experiment (nucl-ex), Nuclear Experiment, ComputingMilieux_MISCELLANEOUS, Physics, sezele, Order (ring theory), Nuclear equation of state, Observable, 21.65.-f Nuclear matter 27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219 24.60.-k Statistical theory and fluctuations 25.75.Gz Particle correlations and fluctuations 21.10.Hw Spin, Symmetry (physics), Term (time), Computer Science Applications, parity, Nuclear reactions, Saturation (chemistry), Nucleon, Energy (signal processing)
Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011., Comment: Talk given by P. Russotto at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

Published
2013

412. The data acquisition system of the neutron time-of-flight facility n- TOF at CERN

Author

Abbondanno, U., Aerts, G., Alvarez-Velarde, F., Alvarez, H., Andriamonje, S., Andrzejewski, J., Badurek, G., Baumann, P., Becvar, F., Benlliure, J., Berthomieux, E., Betev, B., Calvino, P., Cano-Ott, D., Capote, R., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Cortina, D., Couture, A., Cox, J., Dababneh, S., David, S., Dolfini, R., Domingo-Pardo, C., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, Anthony, Ferreira-Marques, R., Frais-Koelbl, H., Furman, W.I., Goncalves, I.F., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Gunsing, F., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Isaev, S., Jericha, E., Käppeler, F., Kadi, Y., Kerveno, M., Ketlerov, V., Koehler, P.E., Konovalov, V., Kossionides, E., Krticka, M., Leeb, H., Lindote, A., Lopes, M.I., Lozano, M., Lukic, S., Marganiec, J., Marrone, S., Martinez-Val, J., Mastinu, P.F., Mengoni, A., Milazzo, P.M., Molina-Coballes, A., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O'Brien, S., Pancin, J., Papaevangelou, T., Paradela, C., Pavlik, A., Pavlopoulos, P., Perlado, J.M., Perrot, L., Peskov, V., Plag, R., Plompen, A., Plukis, A., Poch, A., Policarpo, A., Pretel, C., Quesada, J.M., Rapp, W., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rulhusen, P., Salgado, J., Schäfer, E., Soares, J.C., Stephan, C., Tagliente, G., Tain, J.L., Tassan-Got, L., Tavora, L.M.N., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin-Fernandez, D., Vincente-Vincente, M., Vlachoudis, V., Voss, F., Wendler, H., Wiescher, M., Wisshak, K., Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. GREENER - Grup de recerca d'estudis energètics i de les radiacions, U.Abbondanno, G. Aert, F.Alvarez, H.Alvarez, S.Andriamonje, J.Andrzejewski, G.Badurek, P.Baumann, F.Becvar, J. Benlliure, E. Berthomieux, B.Betev, F. Calvino, D.Cano-Ott, R.Capote, P.Cennini, V.Chepel, E.Chiaveri, N.Colonna, G.Corte, D.Cortina, A.Couture, J.Cox, S.Dababneh, S.David, R.Dolfini, C.Domingo-Pardo, I.Duran, M.Embid-Segura, L.Ferrant, A.Ferrari, R.Ferreira-Marque, H.Frais-Koelbl, W.Furman, I.Goncalve, E.Gonzalez-Romero, A.Goverdovski, F.Gramegna, E.Griesmayer, F.Gunsing, B.Haa, R.Haight, M.Heil, A.Herrera-Martinez, S.Isaev, E.Jericha, Y.Kadi, F.Kappeler, M.Kerveno, V.Ketlerov, P.E.Koehlera, V.Konovalov, M.Krticka, H.Leeb, A.Lindote, M.I.Lope, M. Lozano, S.Lukic, J.Marganiec, S.Marrone, J.Martinez-Val, P.Mastinu, A.Mengoni, P.M.Milazzo, A.Molina-Coballe, C.Moreau, M.Mosconi, F.Neve, H.Oberhummer, S.O'Brien, J.Pancin, T.Papaevangelou, C.Paradela, A.Pavlik, P.Pavlopoulo, J.M.Perlado, L.Perrot, V.Peskov, R.Plag, A.Plompen, A.Pluki, A. Poch, A.Policarpo, C.Pretel, J.M.Quesada, W. Rapp, T. Rauscher, R. Reifarth, M. Rosetti, C. Rubbia, G. Rudolf, P. Rullhusena, J. Salgado, E. Schaeffer, J.C. Soare, C. Stephan, G. Tagliente, J.L. Tain, L. Tassan-Got, L.M.N. Tavora, R. Terlizzi, G. Vannini, P. Vaz, A. Ventura, D. Villamarin-Fernandez, M. Vincente-Vincente, V. Vlachoudi, F. Vo, H. Wendler, M. Wiescher, K. Wisshak., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-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), and TOF

Subjects
Nuclear and High Energy Physics, Memory buffer register, TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES, Radiative capture, Computer interfaces, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, ComputingMethodologies_ARTIFICIALINTELLIGENCE, Radiació, Nuclear physics--Experiments, Nuclear magnetic resonance, Data acquisition, Neutron flux, 0103 physical sciences, Pulse shape analysis, Neutron, 010306 general physics, Instrumentation, Physics, Large Hadron Collider, Física [Àrees temàtiques de la UPC], 010308 nuclear & particles physics, business.industry, 25.40.Lw, 25.40.Ny, 29.50.+v, 29.85.+c, Neutron time-of-flight spectroscopy, TheoryofComputation_GENERAL, Dead time, Flash-ADC, Time of flight, Neutron capture, Física nuclear -- Experiments, ComputingMethodologies_PATTERNRECOGNITION, business, Computer hardware
Abstract

The n_TOF facility at CERN has been designed for the measurement of neutron capture, fission and (n; n) crosssections with high accuracy. This requires a flexible and—due to the high instantaneous neutron flux—almost dead time free data acquisition system. A scalable and versatile data solution has been designed based on 8-bit flash-ADCs with sampling rates up to 2GHz and 8 Mbyte memory buffer. The software is written in C and Cþþand is running on PCs equipped with RedHat Linux.

Published
2005

413. Dynamical aspects of fragment production in heavy ion collisions

Author

Plagnol, E., Auger, G., Assenard, M., Bacri, C. O., Benlliure, J., Bisquer, E., Borderie, B., Bougault, R., Brou, R., J-L, Charvet, Chbihi, A., Colin, J., Cussol, D., Dayras, R., Demeyer, A., Defilippo, E., Dore, D., Durand, D., Philippe Eudes, Genoux-Lubain, A., Gerlic, E., Marie Germain, Gourio, D., Guinet, D., Laforest, R., Lautesse, P., Laville, J. L., Lebreton, L., Lebrun, C., Lecolley, J. F., Le Fevre, A., Lefort, T., Legrain, R., Lopez, O., Louvel, M., Nathalie Marie, Vincent Métivier, Nalpas, L., Pârlog, M., Peter, J., Politi, O., Pollacco, E. C., Rahmani, A., Régimbart, R., Reposeur, T., Rosato, E., M-F, Rivet, Saint-Laurent, F., Salou, S., Siwek, A., Squalli, M., Steckmeyer, J. C., Stern, M., Tamain, B., Tassan-Got, L., Tirel, O., Vient, E., Volant, C., Wieleczko, J. P., Wieloch, A., Yugang, M., E., Plagnol, G., Auger, M., Assenard, C. O., Bacri, J., Benlliure, E., Bisquer, B., Borderie, R., Bougault, R., Brou, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, R., Dayra, E., DE FILIPPO, A., Demeyer, D., Dor, D., Durand, P., Eude, A., GENOUX LUBAIN, E., Gerlic, M., Germain, D., Gourio, D., Guinet, R., Laforest, P., Lautesse, J. L., Laville, L., Lebreton, C., LE BRUN, C., Lebrun, J. F., Lecolley, A., LE FVRES, T., Lefort, R., Legrain, O., Lopez, M., Louvel, L., Nalpa, N., Marie, V., Mtivier, M., Parlog, J., Pter, G., Politi, E., Pollacco, A., Rahmani, R., Regimbart, T., Rposeur, M. F., Rivet, Rosato, Elio, F., SAINT LAURENT, S., Salou, A., Siwek, M., Squalli, J. C., Steckmeyer, M., Stern, B., Tamain, L., TASSAN GOT, O., Tirel, E., Vient, C., Volant, J. P., Wielezcko, A. WIELOCH E. M., Yu, 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), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Frois B. Goutte D. Guillemaud-Mueller D., 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), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Robert, Suzanne

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

414. Search for dynamical effects in the multifragmentation process at intermediate energy

Author

Marie Germain, Philippe Eudes, Gourio, D., Gulminelli, F., Laville, J. L., Lebrun, C., Reposeur, T., Assenard, M., Ardouin, D., Benlliure, J., Bougault, R., Gagne, P., Pascal Lautridou, Lopez, O., Vincent Métivier, Rahmani, A., Wieleczko, J. P., Auger, G., Bacri, Ch O., Bisquer, E., Bocage, F., Borderie, B., Brou, R., Buchet, P., L Charvet, J., Chbihi, A., Colin, J., Cussol, D., Dayras, R., Filippo, E., Demeyer, A., Doré, D., Durand, D., Frankland, J. D., Galichet, E., Genouin-Duhamel, E., Gerlic, E., Guinet, D., Lautesse, P., Lecolley, J. F., Le Fevre, A., Lefort, T., Legrain, R., Louvel, M., Nathalie Marie, Nalpas, L., Nguyen, A. D., Pârlog, M., Peter, J., Plagnol, E., Rivet, M. F., Rosato, E., Roy, R., Saint-Laurent, F., Salou, S., Squalli, M., Steckmeyer, J. C., Stern, M., Tamain, B., Tirel, O., Tassan-Got, L., Vient, E., Volant, C., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-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), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Iori I., INDRA, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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 National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), I.Iori, M., Germain, P., Eude, D., Gourio, F., Gulminelli, J. L., Laville, C., Lebrun, T., Réposeur, M., Assenard, D., Ardouin, J., Benlliure, R., Bougault, P., Gagne, P., Lautridou, O., Lopez, V., Métivier, A., Rahmani, J. P., Wielezcko, G., Auger, C. O., Bacri, E., Bisquer, F., Bocage, B., Borderie, R., Brou, P., Buchet, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, R., Dayra, E., De Filippo, A., Demeyer, D., Doré, D., Durand, J. D., Frankland, E., Galichet, E., Genouin Duhamel, E., Gerlic, D., Guinet, N., Lautesse, J. F., Lecolley, A., Le Fèvre, T., Lefort, R., Legrain, M., Louvel, N., Marie, L., Nalpa, A. D., Nguyen, M., Parlog, J., Péter, E., Plagnol, M. F., Rivet, Rosato, Elio, R., Roy, F., Saint Laurent, S., Salou, M., Squalli, J. C., Steckmeyer, M., Stern, B., Tamain, L., Tassan Got, O., Tirel, E., Vient, C., Volant, and Robert, Suzanne

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1997

415. Thermodynamical properties and deexcitation of sources involved in collisions between light nuclei around 100 AMeV incident energy

Author

Borderie, B., Gulminelli, F., Rivet, M. F., Doré, D., Chbihi, A., Philippe Eudes, Pârlog, M., Tassan-Got, L., Auger, G., Bacri, C. O., Benlliure, J., Bisquer, E., Bougault, R., Brou, R., Charvet, J. L., Colin, J., Cussol, D., Dayras, R., Filippo, E., Demeyer, A. N., Ecomard, P., Gourio, D., Guinet, D., Laforest, R., Lautesse, P., Laville, J. L., Lebreton, L., Lecolley, J. F., Lefèvre, A., Lefort, T., Legrain, R., Lopez, O., Louvel, M., Nathalie Marie, Vincent Métivier, Nalpas, L., Ouatizerga, A., Péter, J., Plagnol, E., Rahmani, A., Reposeur, T., Rosato, E., Saint-Laurent, F., Squalli, M., Steckmeyer, J. C., Tamain, B., Vient, E., Volant, C., Wieleczko, J. P., Durand, D., 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), M.Petrovici, A.Sandulescu, D.Pelte, H.Stocker, J.Randrup, B., Borderie, F., Gulminelli, M. F., Rivet, D., Doré, A., Chbihi, D., Durand, P., Eude, M., Parlog, L., Tassan Got, G., Auger, C. O., Bacri, J., Benlliure, E., Bisquer, R., Bougault, R., Brou, J. L., Charvet, J., Colin, D., Cussol, R., Dayra, E., De Filippo, A., Demeyer, P., Ecomard, D., Gourio, D., Guinet, R., Laforest, N., Lautesse, J. L., Laville, L., Lebreton, J. F., Lecolley, A., Le Fèvre, T., Lefort, R., Legrain, O., Lopez, M., Louvel, N., Marie, V., Métivier, L., Nalpa, A., Ouatizerga, J., Péter, E., Plagnol, A., Rahmani, T., Réposeur, Rosato, Elio, F., Saint Laurent, M., Squalli, J. C., Steckmeyer, B., Tamain, E., Vient, C., Volant, and J. P., Wielezcko

Subjects
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMilieux_MISCELLANEOUS, Nuclear Physics
Abstract

International audience

Published
1996

416. Phase transition in nuclear matter ?

Author

Auger, G., Benlliure, J., Abdelouahad Chbihi, Ecomard, P., Le Fevre, A., Nathalie Marie, Politi, G., Saint-Laurent, F., Salou, S., Tirel, O., Wieleczko, J. P., Bacri, Ch O., Borderie, B., Dore, D., Lukasic, J., Ouatizerga, A., Pârlog, M., Plagnol, E., Rivet, M. F., Squalli, M., Tassan-Got, L., Bougault, R., Brou, R., Colin, J., Cussol, D., Durand, D., Gulminelli, F., Laforest, R., Lecolley, J. F., Lefort, T., Lopez, O., Louvel, M., Peter, J., Rosato, E., Steckmeyer, J. C., Tamain, B., Vient, E., Bisquier, E., Demeyer, A., Guinet, D., Lautesse, P., Lebreton, L., Charvet, J. L., Dayras, R., Filippo, E., Legrain, R., Nalpas, L., Volant, C., Assenard, M., Eudes, P., Gourio, D., Marie Germain, Laville, J. L., Lebrun, C., Vincent Métivier, Rahamani, A., Reposeur, T., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Costa S. Albergo S. Insolia A. Tuve C., INDRA, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), S Costa, S Albergo, A Insolia, C Tuvé, G., Auger, J., Benlliure, A., Chbihi, P., Ecomard, A., Le Fèvre, N., Marie, G., Politi, F., Saint Laurent, S., Salou, O., Tirel, J. P., Wielezcko, Bacri, C. h. O., B., Borderie, D., Doré, J., Lukasik, A., Ouatizerga, M., Parlog, E., Plagnol, M. F., Rivet, M., Squalli, L., Tassan Got, R., Bougault, R., Brou, J., Colin, D., Cussol, D., Durand, F., Gulminelli, R., Laforest, J. F., Lecolley, T., Lefort, O., Lopez, M., Louvel, J., Péter, Rosato, Elio, J. C., Steckmeyer, B., Tamain, E., Vient, E., Bisquer, A., Demeyer, D., Guinet, P., Lautesse, L., Lebreton, J. L., Charvet, R., Dayra, E., De Filippo, R., Legrain, L., Nalpa, C., Volant, M., Assenard, P., Eude, D., Gourio, M., Germain, J. L., Laville, C., Le Brun, V., Métivier, A., Rahmani, T., Réposeur, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Lion, Michel

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1996

417. Multifragment production in heavy ion induced reactions at intermediate energy

Author

Dayras, R, Auger, G, Bacri, C O, Benkirane, A, Benlliure, J, Berthier, B, Bisquer, E, Borderie, B, Bougault, R, Box, P, Brou, R, Buchet, P, Cassagnou, Y, Charvet, J L, Chbihi, A, Colin, J, Cussol, D, De Filippo, E, Demeyer, A N, Doré, D, Durand, D, Ecomard, P, Eudes, P, Genoux-Lubain, A, Gerlic, E, Gourio, D, Guinet, D, Gulminelli, F, Laforest, R, Lakehal-Ayat, L, Lautesse, P, Laville, J L, Lebreton, L, Lebrun, C, Lefèvre, A, Lefort, T, Legrain, R, López, O, Louvel, M, Lukasik, J, Mahi, M, Marie, N, Métivier, V, Nakagawa, T, Nalpas, L, Ouatizerga, A, Pârlog, M, Plagnol, E, Péter, J, Pollacco, E C, Rahmani, A, Régimbart, R, Reposeur, T, Rivet, M F, Rosato, E, Saint-Laurent, F, Siwek, A, Squalli, M, Steckmeyer, J C, Stern, M, Tamain, B, Tassan-Got, L, Vient, E, Volant, C, Wieleczko, J P, Wieloch, A, Ma, Y G, Yuasa-Nakagawa, K, R., Dayra, Bacri, C. h. O., A., Benkirane, J., Benlliure, B., Berthier, E., Bisquer, B., Borderie, R., Bougault, P., Box, R., Brou, Buchet, P. h., Y., Cassagnou, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, E., De Filippo, A., Demeyer, D., Doré, D., Durand, P., Ecomard, P., Eude, A., Genoux Lubain, E., Gerlic, D., Gourio, D., Guinet, F., Gulminelli, R., Laforest, L., Lakehal Ayat, P., Lautesse, J. L., Laville, L., Lebreton, C., Lebrun, J. F., Lecolley, A., Le Fèvre, T., Lefort, R., Legrain, O., Lopez, M., Louvel, J., Lukasik, M., Mahi, N., Marie, V., Métivier, T., Nakagawa, L., Nalpa, A., Ouatizerga, M., Parlog, J., Péter, E., Plagnol, E. C., Pollacco, A., Rahmani, R., Regimbart, T., Réposeur, M. F., Rivet, Rosato, Elio, F., Saint Laurent, A., Siwek, M., Squalli, J. C., Steckmeyer, M., Stern, B., Tamain, L., Tassan Got, E., Vient, C., Volant, J. P., Wielezcko, A., Wieloch, Y. G., Ma, and K., Yuasa Nakagawa

Subjects
Nuclear Physics
Published
1996

418. Dominance of deep inelastic binary processes in symmetric nucleus-nucleus collisions from 25 to 75 MeV/u

Author

Métivier, V, Tamain, B, Auger, G, Bacri, C O, Benkirane, A, Benlliure, J, Berthier, B, Borderie, B, Bougault, R, Box, P, Brou, R, Cassagnou, Y, Charvet, J L, Chbihi, A, Colin, J, Cussol, D, Dayras, R, De Filippo, E, Demeyer, A N, Durand, D, Ecomard, P, Eudes, P, Genoux-Lubain, A, Gourio, D, Guinet, D, Laforest, R, Lakehal-Ayat, L, Lautesse, P, Laville, J L, Lebreton, L, Lebrun, C, Lecolley, J F, Lefèvre, A, Legrain, R, López, O, Louvel, M, Mahi, M, Marie, N, Kakagawa, T, Nalpas, L, Ouatizerga, A, Pârlog, M, Péter, J, Plagnol, E, Pollacco, E C, Rahmani, A, Régimbart, R, Reposeur, T, Rivet, M F, Rosato, E, Saint-Laurent, F, Squalli, M, Steckmeyer, J C, Tassan-Got, L, Vient, E, Volant, C, Wieleczko, J P, Wieloch, A, Yuasa-Nakagawa, K, G.Nebbia, M.N.Namboodiri, V., Métivier, R., Bougault, J. L., Charvet, D., Cussol, D., Durand, R., Laforest, J. F., Lecolley, O., Lopez, J. C., Steckmeyer, B., Tamain, E., Vient, G., Auger, C. O., Bacri, A., Benkirane, J., Benlliure, B., Berthier, B., Borderie, P., Box, R., Brou, Y., Cassagnou, A., Chbihi, J., Colin, R., Dayra, E., De Filippo, A., Demeyer, P., Ecomard, P., Eude, A., Genoux Lubain, D., Gourio, D., Guinet, L., Lakehal Ayat, P., Lautesse, J. L., Laville, L., Lebreton, C., Le Brun, A., Lefèvre, R., Legrain, M., Louvel, M., Mahi, N., Marie, T., Nakagawa, L., Nalpa, A., Ouatizerga, M., Parlog, J., Péter, E., Plagnol, E., Pollacco, A., Rahmani, R., Régimbart, T., Réposeur, M. F., Rivet, Rosato, Elio, F., Saint Laurent, M., Squalli, L., Tassan Got, C., Volant, J. P., Wielezcko, A., Wieloch, and K., Yuasa Nakagawa

Subjects
Nuclear Physics
Published
1995

419. Study of the nuclear multifragmentation: recent results obtained with th INDRA detector in the intermediate energy domain

Author

Saint-Laurent, F., Bougault, R., Berthier, B., Charvet, J. L., Dayras, R., Filippo, E., Legrain, R., Nalpas, L., Pollacco, E., Volant, C., Auger, G., Benkirane, A., Benlliure, J., Chbihi, A., Ecomard, P., Le Fevre, A., Nathalie Marie, Pouthas, J., Wieleczko, J. P., Bacri, C. O., Borderie, B., Box, P., Lakehal-Ayat, L., Ouatizerga, A., Plagnol, E., Rivet, M. F., Squalli, M., Tassan-Got, L., Philippe Eudes, Gourio, D., Laville, J. L., Rahmani, A., Reposeur, T., Demeyer, A., Guinet, D., Lautesse, P., Lebreton, L., Brou, R., Colin, J., Cussol, D., Durand, D., Genoux-Lubain, A., Le Brun, C., Lecolley, J. F., Lopez, O., Louvel, M., Mahi, M., Vincent Métivier, Peter, J., Rosato, R., Steckmeyer, J. C., Tamain, B., Vient, E., Yuasa-Nakagawa, K., Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), B., Berthier, J. L., Charvet, R., Dayra, E., DE FILIPPO, R., Legrain, L., Nalpa, E., Pollacco, C., Volant, G., Auger, A., Benkirane, J., Benlliure, A., Chbihi, P., Ecomard, A., LE FVRE, N., Marie, J., Poutha, F., SAINT LAURENT, J. P., Wielezcko, C. O., Bacri, B., Borderie, P., Box, L., LAKEHAL AYAT, A., Ouatizerga, E., Plagnol, M. F., Rivet, M., Squalli, L., TASSAN GOT, R., Bougault, R., Brou, Jcolin, D., Cussol, D., Durand, A., GENOUX LUBAIN, C., LE BRUN, J. F., Lecolley, O., Lopez, M., Louvel, V., Mtivier, J., Pter, R., Rgimbart, Rosato, Elio, J. C., Steckmeyer, B., Tamain, E., Vient, A., Wieloch, P., Eude, D., Gourio, J. L., Laville, A., Rahmani, T., Rposeur, A., Demeyer, C., Donnet, D., Guinet, N. LAUTESSE E. L., Lebreton, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Guesnon, Sandrine

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1994

420. Selection of single-source multifragmentation events for collisions of $^{155}$Gd+$^{238}$U at 36 MeV/u studied with INDRA

Author

Frankland, J. D., Bacri, Ch O., Borderie, B., Bougault, R., Lecolley, J. F., Rivet, M. F., Squalli, M., Assenard, M., Auger, G., Benlliure, J., Bisquer, E., Bocage, F., Brou, R., Buchet, P., L Charvet, J., Chbihi, A., Colin, J., Cussol, D., Dayras, R., Filippo, E., Demeyer, A., Doré, D., Durand, D., Philippe Eudes, Galichet, E., Genouin-Duhamel, E., Gerlic, E., Marie Germain, Gourio, D., Guinet, D., Lautesse, P., Laville, J. L., Le Fevre, A., Lefort, T., Legrain, R., Lopez, O., Louvel, M., Nathalie Marie, Vincent Métivier, Nalpas, L., Nguyen, A. D., Pârlog, M., Peter, J., Plagnol, E., Rahmani, A., Reposeur, T., Rosato, E., Roy, R., Saint-Laurent, F., Salou, S., Steckmeyer, J. C., Stern, M., Tabacaru, G., Tamain, B., Tirel, O., Tassan-Got, L., Vient, E., Volant, C., Wieleczko, J. P., 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), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Iori I., INDRA, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), I.Iori, J. D., Frankland, C. O., Bacri, B., Borderie, R., Bougault, J. F., Lecolley, M. F., Rivet, M., Squalli, M., Assenard, G., Auger, J., Benlliure, E., Bisquer, F., Bocage, R., Brou, P., Buchet, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, R., Dayra, E., De Filippo, A., Demeyer, D., Doré, D., Durand, P., Eude, E., Galichet, E., Genouin Duhamel, E., Gerlic, M., Germain, D., Gourio, D., Guinet, N., Lautesse, J. L., Laville, A., Le Fèvre, T., Lefort, R., Legrain, O., Lopez, M., Louvel, N., Marie, V., Métivier, L., Nalpa, A. D., Nguyen, M., Parlog, J., Péter, E., Plagnol, A., Rahmani, T., Réposeur, Rosato, Elio, R., Roy, F., Saint Laurent, S., Salou, J. C., Steckmeyer, M., Stern, G., Tabacaru, B., Tamain, L., Tassan Got, O., Tirel, E., Vient, C., Volant, and J. P., Wieleczko

Subjects
Detectors and Experimental Techniques, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]

421. Dynamical and statistical aspects in nucleus-nucleus collisions around the Fermi energy

Author

Tamain, B., Assenard, M., Auger, G., Bacri, C. O., Benlliure, J., Bisquer, E., Bocage, F., Borderie, B., Bougault, R., Brou, R., Buchet, P., Charvet, J. L., Chbihi, A., Colin, J., Daniel CUSSOL, Dayras, R., Demeyer, A., Dore, D., Durand, D., Eudes, P., Frankland, J., Galichet, E., Genouin-Duhamel, E., Gerlic, E., Germain, M., Gourio, D., Guinet, D., Gulminelli, F., Lautesse, P., Laville, J. L., Lebrun, C., Lecolley, J. F., Lefevre, A., Lefort, T., Legrain, R., Le Neindre, N., Lopez, O., Louvel, M., Lukasik, J., Marie, N., Maskay, M., Métivier, V., Nalpas, L., Nguyen, A., Parlog, M., Pèter, J., Plagnol, E., Rahmani, A., Reposeur, T., Rivet, M. F., Rosato, E., Saint-Laurent, F., Salou, S., Squalli, M., Steckmeyer, J. C., Stern, M., Tabacaru, T., Tassan-Got, L., Tirel, O., Vient, E., Volant, C., Wieleczko, J. P., B., Tamain, M., Assenard, G., Auger, C. O., Bacri, J., Benlliure, E., Bisquer, F., Bocage, B., Borderie, R., Bougault, R., Brou, P., Buchet, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, R., Dayra, E., DE FILIPPO, A., Demeyer, D., Dor, D., Durand, P., Eude, J. D., Frankland, E., Galichet, E., GENOUIN DUHAMEL, E., Gerlic, M., Germain, D., Gourio, D., Guinet, F., Gulminelli, P., Lautesse, J. L., Laville, C., Lebrun, J. F., Lecolley, A., LE FVRE, T., Lefort, R., Legrain, N., LE NEINDRE, O., Lopez, M., Louvel, J., Lukasik, N., Marie, A. M., Maskay, V., Mtivier, L., Nalpa, A. D., Nguyen, M., Parlog, J., Pter, E., Plagnol, A., Rahmani, T., Reposeur, M. F., Rivet, Rosato, Elio, F., SAINT LAURENT, S., Salou, M., Squalli, J. C., Steckmeyer, M., Stern, G., Tabacaru, L., TASSAN GOT, O., Tirel, E., Vient, C. VOLANT E. J. P., Wieleczko, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), INDRA, and Flores, Sylvie

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Physics

422. Fast neutron generation with few-cycle, relativistic laser pulses at 1 Hz repetition rate.

Author

Osvay K, Singh PK, Varmazyar P, Füle M, Gilinger T, Kis B, Lehotai L, Nagy B, Stuhl L, Elekes Z, Halász Z, Korkulu Z, Kuti I, Biró B, Fenyvesi A, Fülöp Z, Csedreki L, Dombrádi Z, Bembibre A, Benlliure J, Peñas J, Börzsönyi A, Csontos J, Farkas A, Mohacsi A, Somoskői T, Szabó G, and Tóth S

Abstract

Laser-driven deuterons generate neutrons with a mean energy of 2.5 MeV, through the 2 H(d,n) fusion reaction in a deuterated polyethylene (dPE) tablet. The deuterium ions are accelerated by 12 fs, 21 mJ laser pulses interacting with a 0.2 µm thin dPE foil at a peak intensity of 10 18 W/cm 2 . The laser was operated at 1 Hz repetition rate in bursts of 75 shots. The interaction was characterized and recorded for each laser shot. The ion spectra were measured in the forward and backward directions by Thomson ion spectrometers. Neutron events were detected by a time-of-flight (ToF) system consisting of four plastic scintillators positioned at various angles around the experimental chamber. The maximum cut-off energy of the forward accelerated protons and deuterons was close to 1.4 MeV and 1 MeV, while the mean values are 428 ± 63 keV and 433 ± 80 keV, respectively. Analysis of ToF distributions from 3128 shots resulted in an average yield of 1142 ± 59 neutrons per shot in the energy range of 1.5-4 MeV. The energy distribution of forward-directed neutrons peaks between 3 and 3.5 MeV. Angular dependence analysis showed a perpendicular minimum and a maximum along the deuteron beam, consistent with the expected distribution from the literature and our simulation results., (© 2024. The Author(s).)

Published
2024
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423. Production of carbon-11 for PET preclinical imaging using a high-repetition rate laser-driven proton source.

Author

Peñas J, Alejo A, Bembibre A, Apiñaniz JI, García-García E, Guerrero C, Henares JL, Hernández-Palmero I, Méndez C, Millán-Callado MÁ, Puyuelo-Valdés P, Seimetz M, and Benlliure J

Abstract

Most advanced medical imaging techniques, such as positron-emission tomography (PET), require tracers that are produced in conventional particle accelerators. This paper focuses on the evaluation of a potential alternative technology based on laser-driven ion acceleration for the production of radioisotopes for PET imaging. We report for the first time the use of a high-repetition rate, ultra-intense laser system for the production of carbon-11 in multi-shot operation. Proton bunches with energies up to 10-14 MeV were systematically accelerated in long series at pulse rates between 0.1 and 1 Hz using a PW-class laser. These protons were used to activate a boron target via the 11 B(p,n) 11 C nuclear reaction. A peak activity of 234 kBq was obtained in multi-shot operation with laser pulses with an energy of 25 J. Significant carbon-11 production was also achieved for lower pulse energies. The experimental carbon-11 activities measured in this work are comparable to the levels required for preclinical PET, which would be feasible by operating at the repetition rate of current state-of-the-art technology (10 Hz). The scalability of next-generation laser-driven accelerators in terms of this parameter for sustained operation over time could increase these overall levels into the clinical PET range., (© 2024. The Author(s).)

Published
2024
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424. Validation of a laser driven plasma X-ray microfocus source for high resolution radiography imaging.

Author

Martín L, Benlliure J, Cortina-Gil D, Haruna A, and Ruiz C

Subjects
Radiography, Synchrotrons, X-Rays, Lasers, Light
Abstract

Hard X-ray radiation with high brightness and high fluxes is nowadays available on the fourth generation of synchrotrons and X-FELs, but the large size and complexity of these sources makes its use difficult for widespread applications. New table top X-ray sources driven by ultrashort high power lasers offer a compelling route to expand the availability of hard X-ray sources. They can be used for advanced imaging techniques, due to its small source size and spatial coherence. We present in this paper the validation of a compact laser-driven X-ray microfocus source for high-resolution radiography imaging. This novel device was built at the Laser Laboratory for Acceleration and Applications (L2A2) at the University of Santiago de Compostela. This paper describes the laser-plasma X-ray source with improved stability and characterize some of its properties. We demonstrate the high-contrast and resolution of the images obtained with this source by using masks with well known geometries, and detailed analysis by using the modulation transfer function. Finally, we discuss the properties of this source in comparison to other compact microfocus X-ray sources., (Copyright © 2021 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.)

Published
2021
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425. PADC nuclear track detector for ion spectroscopy in laser-plasma acceleration.

Author

Seimetz M, Peñas J, Llerena JJ, Benlliure J, García López J, Millán-Callado MA, and Benlloch JM

Subjects
Acceleration, Ions, Lasers, Spectrum Analysis, Polymers, Radiometry
Abstract

The transparent polymer polyallyl-diglycol-carbonate (PADC), also known as CR-39, is widely used as detector for heavy charged particles at low fluence. It allows for detection of single protons and ions via formation of microscopic tracks after etching in NaOH or KOH solutions. PADC combines a high sensitivity and high specificity with inertness towards electromagnetic noise. Present fields of application include laser-ion acceleration, inertial confinement fusion, radiobiological studies with cell cultures, and dosimetry of nuclear fragments in particle therapy. These require precise knowledge of the energy-dependent response of PADC to different ion species. We present calibration data for a new type of detector material, Radosys RS39, to protons (0.2-3 MeV) and carbon ions (0.6-12 MeV). RS39 is less sensitive to protons than other types of PADC. Its response to carbon ions, however, is similar to other materials. Our data indicate that RS39 allows for measuring carbon ion energies up to 10 MeV only from the track diameters. In addition, it can be used for discrimination between protons and carbon ions in a single etching process., (Copyright © 2020 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.)

Published
2020
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426. Evidence for a New Compact Symmetric Fission Mode in Light Thorium Isotopes.

Author

Chatillon A, Taïeb J, Alvarez-Pol H, Audouin L, Ayyad Y, Bélier G, Benlliure J, Boutoux G, Caamaño M, Casarejos E, Cortina-Gil D, Ebran A, Farget F, Fernández-Domínguez B, Gorbinet T, Grente L, Heinz A, Johansson HT, Jurado B, Kelić-Heil A, Kurz N, Laurent B, Martin JF, Nociforo C, Paradela C, Pellereau E, Pietri S, Prochazka A, Rodríguez-Sánchez JL, Rossi D, Simon H, Tassan-Got L, Vargas J, Voss B, and Weick H

Abstract

Taking benefit of the R3B/SOFIA setup to measure the mass and the nuclear charge of both fission fragments in coincidence with the total prompt-neutron multiplicity, the scission configurations are inferred along the thorium chain, from the asymmetric fission in the heavier isotopes to the symmetric fission in the neutron-deficient thorium. Against all expectations, the symmetric scission in the light thorium isotopes shows a compact configuration, which is in total contrast to what is known in the fission of the heavier thorium isotopes and heavier actinides. This new main symmetric scission mode is characterized by a significant drop in deformation energy of the fission fragments of about 19 MeV, compared to the well-known symmetric scission in the uranium-plutonium region.

Published
2020
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427. Strong Neutron Pairing in core+4n Nuclei.

Author

Revel A, Marqués FM, Sorlin O, Aumann T, Caesar C, Holl M, Panin V, Vandebrouck M, Wamers F, Alvarez-Pol H, Atar L, Avdeichikov V, Beceiro-Novo S, Bemmerer D, Benlliure J, Bertulani CA, Boillos JM, Boretzky K, Borge MJG, Caamaño M, Casarejos E, Catford WN, Cederkäll J, Chartier M, Chulkov L, Cortina-Gil D, Cravo E, Crespo R, Datta Pramanik U, Díaz Fernández P, Dillmann I, Elekes Z, Enders J, Ershova O, Estradé A, Farinon F, Fraile LM, Freer M, Galaviz D, Geissel H, Gernhäuser R, Golubev P, Göbel K, Hagdahl J, Heftrich T, Heil M, Heine M, Heinz A, Henriques A, Ignatov A, Johansson HT, Jonson B, Kahlbow J, Kalantar-Nayestanaki N, Kanungo R, Kelic-Heil A, Knyazev A, Kröll T, Kurz N, Labiche M, Langer C, Le Bleis T, Lemmon R, Lindberg S, Machado J, Marganiec J, Movsesyan A, Nacher E, Najafi M, Nilsson T, Nociforo C, Paschalis S, Perea A, Petri M, Pietri S, Plag R, Reifarth R, Ribeiro G, Rigollet C, Röder M, Rossi D, Savran D, Scheit H, Simon H, Syndikus I, Taylor JT, Tengblad O, Thies R, Togano Y, Velho P, Volkov V, Wagner A, Weick H, Wheldon C, Wilson G, Winfield JS, Woods P, Yakorev D, Zhukov M, Zilges A, and Zuber K

Abstract

The emission of neutron pairs from the neutron-rich N=12 isotones ^{18}C and ^{20}O has been studied by high-energy nucleon knockout from ^{19}N and ^{21}O secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay ^{19}N(-1p)^{18}C^{*}→^{16}C+n+n is clearly dominated by direct pair emission. The two-neutron correlation strength, the largest ever observed, suggests the predominance of a ^{14}C core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay ^{21}O(-1n)^{20}O^{*}→^{18}O+n+n, attributed to its formation through the knockout of a deeply bound neutron that breaks the ^{16}O core and reduces the number of pairs.

Published
2018
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428. Quasifree (p, 2p) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength.

Author

Atar L, Paschalis S, Barbieri C, Bertulani CA, Díaz Fernández P, Holl M, Najafi MA, Panin V, Alvarez-Pol H, Aumann T, Avdeichikov V, Beceiro-Novo S, Bemmerer D, Benlliure J, Boillos JM, Boretzky K, Borge MJG, Caamaño M, Caesar C, Casarejos E, Catford W, Cederkall J, Chartier M, Chulkov L, Cortina-Gil D, Cravo E, Crespo R, Dillmann I, Elekes Z, Enders J, Ershova O, Estrade A, Farinon F, Fraile LM, Freer M, Galaviz Redondo D, Geissel H, Gernhäuser R, Golubev P, Göbel K, Hagdahl J, Heftrich T, Heil M, Heine M, Heinz A, Henriques A, Hufnagel A, Ignatov A, Johansson HT, Jonson B, Kahlbow J, Kalantar-Nayestanaki N, Kanungo R, Kelic-Heil A, Knyazev A, Kröll T, Kurz N, Labiche M, Langer C, Le Bleis T, Lemmon R, Lindberg S, Machado J, Marganiec-Gałązka J, Movsesyan A, Nacher E, Nikolskii EY, Nilsson T, Nociforo C, Perea A, Petri M, Pietri S, Plag R, Reifarth R, Ribeiro G, Rigollet C, Rossi DM, Röder M, Savran D, Scheit H, Simon H, Sorlin O, Syndikus I, Taylor JT, Tengblad O, Thies R, Togano Y, Vandebrouck M, Velho P, Volkov V, Wagner A, Wamers F, Weick H, Wheldon C, Wilson GL, Winfield JS, Woods P, Yakorev D, Zhukov M, Zilges A, and Zuber K

Abstract

Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the R^{3}B/LAND setup with incident beam energies in the range of 300-450  MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type ^{A}O(p,2p)^{A-1}N have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.

Published
2018
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429. Measurement of Excitation Spectra in the ^{12}C(p,d) Reaction near the η^{'} Emission Threshold.

Author

Tanaka YK, Itahashi K, Fujioka H, Ayyad Y, Benlliure J, Brinkmann KT, Friedrich S, Geissel H, Gellanki J, Guo C, Gutz E, Haettner E, Harakeh MN, Hayano RS, Higashi Y, Hirenzaki S, Hornung C, Igarashi Y, Ikeno N, Iwasaki M, Jido D, Kalantar-Nayestanaki N, Kanungo R, Knöbel R, Kurz N, Metag V, Mukha I, Nagae T, Nagahiro H, Nanova M, Nishi T, Ong HJ, Pietri S, Prochazka A, Rappold C, Reiter MP, Rodríguez-Sánchez JL, Scheidenberger C, Simon H, Sitar B, Strmen P, Sun B, Suzuki K, Szarka I, Takechi M, Tanihata I, Terashima S, Watanabe YN, Weick H, Widmann E, Winfield JS, Xu X, Yamakami H, and Zhao J

Abstract

Excitation spectra of ^{11}C are measured in the ^{12}C(p,d) reaction near the η^{'} emission threshold. A proton beam extracted from the synchrotron SIS-18 at GSI with an incident energy of 2.5 GeV impinges on a carbon target. The momenta of deuterons emitted at 0° are precisely measured with the fragment separator (FRS) operated as a spectrometer. In contrast to theoretical predictions on the possible existence of deeply bound η^{'}-mesic states in carbon nuclei, no distinct structures are observed associated with the formation of bound states. The spectra are analyzed to set stringent constraints on the formation cross section and on the hitherto barely known η^{'}-nucleus interaction.

Published
2016
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430. First Measurement of Several β-Delayed Neutron Emitting Isotopes Beyond N=126.

Author

Caballero-Folch R, Domingo-Pardo C, Agramunt J, Algora A, Ameil F, Arcones A, Ayyad Y, Benlliure J, Borzov IN, Bowry M, Calviño F, Cano-Ott D, Cortés G, Davinson T, Dillmann I, Estrade A, Evdokimov A, Faestermann T, Farinon F, Galaviz D, García AR, Geissel H, Gelletly W, Gernhäuser R, Gómez-Hornillos MB, Guerrero C, Heil M, Hinke C, Knöbel R, Kojouharov I, Kurcewicz J, Kurz N, Litvinov YA, Maier L, Marganiec J, Marketin T, Marta M, Martínez T, Martínez-Pinedo G, Montes F, Mukha I, Napoli DR, Nociforo C, Paradela C, Pietri S, Podolyák Z, Prochazka A, Rice S, Riego A, Rubio B, Schaffner H, Scheidenberger Ch, Smith K, Sokol E, Steiger K, Sun B, Taín JL, Takechi M, Testov D, Weick H, Wilson E, Winfield JS, Wood R, Woods P, and Yeremin A

Abstract

The β-delayed neutron emission probabilities of neutron rich Hg and Tl nuclei have been measured together with β-decay half-lives for 20 isotopes of Au, Hg, Tl, Pb, and Bi in the mass region N≳126. These are the heaviest species where neutron emission has been observed so far. These measurements provide key information to evaluate the performance of nuclear microscopic and phenomenological models in reproducing the high-energy part of the β-decay strength distribution. This provides important constraints on global theoretical models currently used in r-process nucleosynthesis.

Published
2016
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431. Hindered Gamow-Teller decay to the odd-odd N=Z (62)Ga: absence of proton-neutron T=0 condensate in A=62.

Author

Grodner E, Gadea A, Sarriguren P, Lenzi SM, Grebosz J, Valiente-Dobón JJ, Algora A, Górska M, Regan PH, Rudolph D, de Angelis G, Agramunt J, Alkhomashi N, Amon Susam L, Bazzacco D, Benlliure J, Benzoni G, Boutachkov P, Bracco A, Caceres L, Cakirli RB, Crespi FC, Domingo-Pardo C, Doncel M, Dombrádi Z, Doornenbal P, Farnea E, Ganioğlu E, Gelletly W, Gerl J, Gottardo A, Hüyük T, Kurz N, Leoni S, Mengoni D, Molina F, Morales AI, Orlandi R, Oktem Y, Page RD, Perez D, Pietri S, Podolyák Z, Poves A, Quintana B, Rinta-Antila S, Rubio B, Nara Singh BS, Steer AN, Verma S, Wadsworth R, Wieland O, and Wollersheim HJ

Abstract

Search for a new kind of superfluidity built on collective proton-neutron pairs with aligned spin is performed studying the Gamow-Teller decay of the T=1, J(π)=0+ ground state of (62)Ge into excited states of the odd-odd N=Z nucleus (62)Ga. The experiment is performed at GSI Helmholtzzentrum für Shwerionenforshung with the (62)Ge ions selected by the fragment separator and implanted in a stack of Si-strip detectors, surrounded by the RISING Ge array. A half-life of T1/2=82.9(14)  ms is measured for the (62)Ge ground state. Six excited states of (62)Ga, populated below 2.5 MeV through Gamow-Teller transitions, are identified. Individual Gamow-Teller transition strengths agree well with theoretical predictions of the interacting shell model and the quasiparticle random phase approximation. The absence of any sizable low-lying Gamow-Teller strength in the reported beta-decay experiment supports the hypothesis of a negligible role of coherent T=0 proton-neutron correlations in (62)Ga.

Published
2014
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432. Half-life systematics across the N=126 shell closure: role of first-forbidden transitions in the β decay of heavy neutron-rich nuclei.

Author

Morales AI, Benlliure J, Kurtukián-Nieto T, Schmidt KH, Verma S, Regan PH, Podolyák Z, Górska M, Pietri S, Kumar R, Casarejos E, Al-Dahan N, Algora A, Alkhomashi N, Álvarez-Pol H, Benzoni G, Blazhev A, Boutachkov P, Bruce AM, Cáceres LS, Cullen IJ, Denis Bacelar AM, Doornenbal P, Estévez-Aguado ME, Farrelly G, Fujita Y, Garnsworthy AB, Gelletly W, Gerl J, Grebosz J, Hoischen R, Kojouharov I, Kurz N, Lalkovski S, Liu Z, Mihai C, Molina F, Mücher D, Rubio B, Shaffner H, Steer SJ, Tamii A, Tashenov S, Valiente-Dobón JJ, Walker PM, Wollersheim HJ, and Woods PJ

Abstract

This Letter reports on a systematic study of β-decay half-lives of neutron-rich nuclei around doubly magic (208)Pb. The lifetimes of the 126-neutron shell isotone (204)Pt and the neighboring (200-202)Ir, (203)Pt, (204)Au are presented together with other 19 half-lives measured during the "stopped beam" campaign of the rare isotope investigations at GSI collaboration. The results constrain the main nuclear theories used in calculations of r-process nucleosynthesis. Predictions based on a statistical macroscopic description of the first-forbidden β strength reveal significant deviations for most of the nuclei with N<126. In contrast, theories including a fully microscopic treatment of allowed and first-forbidden transitions reproduce more satisfactorily the trend in the measured half-lives for the nuclei in this region, where the r-process pathway passes through during β decay back to stability.

Published
2014
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433. Measurement of the dipole polarizability of the unstable neutron-rich nucleus 68Ni.

Author

Rossi DM, Adrich P, Aksouh F, Alvarez-Pol H, Aumann T, Benlliure J, Böhmer M, Boretzky K, Casarejos E, Chartier M, Chatillon A, Cortina-Gil D, Datta Pramanik U, Emling H, Ershova O, Fernandez-Dominguez B, Geissel H, Gorska M, Heil M, Johansson HT, Junghans A, Kelic-Heil A, Kiselev O, Klimkiewicz A, Kratz JV, Krücken R, Kurz N, Labiche M, Le Bleis T, Lemmon R, Litvinov YA, Mahata K, Maierbeck P, Movsesyan A, Nilsson T, Nociforo C, Palit R, Paschalis S, Plag R, Reifarth R, Savran D, Scheit H, Simon H, Sümmerer K, Wagner A, Waluś W, Weick H, and Winkler M

Abstract

The E1 strength distribution in 68Ni has been investigated using Coulomb excitation in inverse kinematics at the R3B-LAND setup and by measuring the invariant mass in the one- and two-neutron decay channels. The giant dipole resonance and a low-lying peak (pygmy dipole resonance) have been observed at 17.1(2) and 9.55(17) MeV, respectively. The measured dipole polarizability is compared to relativistic random phase approximation calculations yielding a neutron-skin thickness of 0.17(2) fm. A method and analysis applicable to neutron-rich nuclei has been developed, allowing for a precise determination of neutron skins in nuclei as a function of neutron excess.

Published
2013
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434. New isomers in the full seniority scheme of neutron-rich lead isotopes: the role of effective three-body forces.

Author

Gottardo A, Valiente-Dobón JJ, Benzoni G, Nicolini R, Gadea A, Lunardi S, Boutachkov P, Bruce AM, Górska M, Grebosz J, Pietri S, Podolyák Z, Pfützner M, Regan PH, Weick H, Alcántara Núñez J, Algora A, Al-Dahan N, de Angelis G, Ayyad Y, Alkhomashi N, Allegro PR, Bazzacco D, Benlliure J, Bowry M, Bracco A, Bunce M, Camera F, Casarejos E, Cortes ML, Crespi FC, Corsi A, Denis Bacelar AM, Deo AY, Domingo-Pardo C, Doncel M, Dombradi Z, Engert T, Eppinger K, Farrelly GF, Farinon F, Farnea E, Geissel H, Gerl J, Goel N, Gregor E, Habermann T, Hoischen R, Janik R, Klupp S, Kojouharov I, Kurz N, Lenzi SM, Leoni S, Mandal S, Menegazzo R, Mengoni D, Million B, Morales AI, Napoli DR, Naqvi F, Nociforo C, Prochazka A, Prokopowicz W, Recchia F, Ribas RV, Reed MW, Rudolph D, Sahin E, Schaffner H, Sharma A, Sitar B, Siwal D, Steiger K, Strmen P, Swan TP, Szarka I, Ur CA, Walker PM, Wieland O, Wollersheim HJ, Nowacki F, Maglione E, and Zuker AP

Abstract

The neutron-rich lead isotopes, up to (216)Pb, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculations. It is shown that their complete description demands the introduction of effective three-body interactions and two-body transition operators in the conventional neutron valence space beyond (208)Pb.

Published
2012
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435. Coincidence measurement of residues and light particles in the reaction 56Fe+p at 1 GeV per nucleon with the spallation reactions setup SPALADIN.

Author

Le Gentil E, Aumann T, Bacri CO, Benlliure J, Bianchin S, Böhmer M, Boudard A, Brzychczyk J, Casarejos E, Combet M, Donadille L, Ducret JE, Fernandez-Ordoñez M, Gernhäuser R, Johansson H, Kezzar K, Kurtukian-Nieto T, Lafriakh A, Lavaud F, Le Fèvre A, Leray S, Lühning J, Lukasik J, Lynen U, Müller WF, Pawlowski P, Pietri S, Rejmund F, Schwarz C, Sfienti C, Simon H, Trautmann W, Volant C, and Yordanov O

Abstract

The spallation of 56Fe in collisions with hydrogen at 1A GeV has been studied in inverse kinematics with the large-aperture setup SPALADIN at GSI. Coincidences of residues with low-center-of-mass kinetic energy light particles and fragments have been measured allowing the decomposition of the total reaction cross section into the different possible deexcitation channels. Detailed information on the evolution of these deexcitation channels with excitation energy has also been obtained. The comparison of the data with predictions of several deexcitation models coupled to the INCL4 intranuclear cascade model shows that only GEMINI can reasonably account for the bulk of collected results, indicating that in a light system with no compression and little angular momentum, multifragmentation might not be necessary to explain the data.

Published
2008
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436. Observation of isomeric decays in the r-process waiting-point nucleus 130Cd82.

Author

Jungclaus A, Cáceres L, Górska M, Pfützner M, Pietri S, Werner-Malento E, Grawe H, Langanke K, Martínez-Pinedo G, Nowacki F, Poves A, Cuenca-García JJ, Rudolph D, Podolyak Z, Regan PH, Detistov P, Lalkovski S, Modamio V, Walker J, Bednarczyk P, Doornenbal P, Geissel H, Gerl J, Grebosz J, Kojouharov I, Kurz N, Prokopowicz W, Schaffner H, Wollersheim HJ, Andgren K, Benlliure J, Benzoni G, Bruce AM, Casarejos E, Cederwall B, Crespi FC, Hadinia B, Hellström M, Hoischen R, Ilie G, Jolie J, Khaplanov A, Kmiecik M, Kumar R, Maj A, Mandal S, Montes F, Myalski S, Simpson GS, Steer SJ, Tashenov S, and Wieland O

Abstract

The gamma decay of excited states in the waiting-point nucleus (130)Cd(82) has been observed for the first time. An 8(+) two-quasiparticle isomer has been populated both in the fragmentation of a (136)Xe beam as well as in projectile fission of 238U, making (130)Cd the most neutron-rich N = 82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N = 82 shell quenching at Z = 48. They allow us to follow nuclear isomerism throughout a full major neutron shell from (98)Cd(50) to (130)Cd(82) and reveal, in comparison with (76)Ni(48) one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.

Published
2007
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437. Measurement of a complete set of nuclides, cross sections, and kinetic energies in spallation of 238U 1A GeV with protons.

Author

Armbruster P, Benlliure J, Bernas M, Boudard A, Casarejos E, Czajkowski S, Enqvist T, Leray S, Napolitani P, Pereira J, Rejmund F, Ricciardi MV, Schmidt KH, Stéphan C, Taieb J, Tassan-Got L, and Volant C

Abstract

Spallation residues and fission fragments from 1A GeV 238U projectiles irradiating a liquid hydrogen target were investigated by using the fragment separator at GSI for magnetic selection of reaction products including ray-tracing, energy-loss and time-of-flight techniques. The longitudinal-momentum spectra of identified fragments were analyzed, and evaporation residues and fission fragments could be separated. For 1385 nuclides, production cross sections down to values of 10 microb with a mean accuracy of 15%, velocities in the uranium rest frame and kinetic energies were determined. In the reaction all elements from uranium to nitrogen were found, each with a large number of isotopes.

Published
2004
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438. Neutron capture cross section measurement of 151Sm at the CERN neutron time of flight facility (n&#95;TOF).

Author

Abbondanno U, Aerts G, Alvarez-Velarde F, Alvarez-Pol H, Andriamonje S, Andrzejewski J, Badurek G, Baumann P, Becvár F, Benlliure J, Berthoumieux E, Calviño F, Cano-Ott D, Capote R, Cennini P, Chepel V, Chiaveri E, Colonna N, Cortes G, Cortina D, Couture A, Cox J, Dababneh S, Dahlfors M, David S, Dolfini R, Domingo-Pardo C, Duran I, Embid-Segura M, Ferrant L, Ferrari A, Ferreira-Marques R, Frais-Koelbl H, Furman W, Goncalves I, Gallino R, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Gunsing F, Haas B, Haight R, Heil M, Herrera-Martinez A, Isaev S, Jericha E, Käppeler F, Kadi Y, Karadimos D, Kerveno M, Ketlerov V, Koehler P, Konovalov V, Krticka M, Lamboudis C, Leeb H, Lindote A, Lopes I, Lozano M, Lukic S, Marganiec J, Marrone S, Martinez-Val J, Mastinu P, Mengoni A, Milazzo PM, Molina-Coballes A, Moreau C, Mosconi M, Neves F, Oberhummer H, O'Brien S, Pancin J, Papaevangelou T, Paradela C, Pavlik A, Pavlopoulos P, Perlado JM, Perrot L, Pignatari M, Plag R, Plompen A, Plukis A, Poch A, Policarpo A, Pretel C, Quesada J, Raman S, Rapp W, Rauscher T, Reifarth R, Rosetti M, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Soares JC, Stephan C, Tagliente G, Tain J, Tassan-Got L, Tavora L, Terlizzi R, Vannini G, Vaz P, Ventura A, Villamarin D, Vincente MC, Vlachoudis V, Voss F, Wendler H, Wiescher M, and Wisshak K

Abstract

The151Sm(n,gamma)152Sm cross section has been measured at the spallation neutron facility n&#95;TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The 151Sm cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.

Published
2004
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439. Transient effects in fission from new experimental signatures.

Author

Jurado B, Schmitt C, Schmidt KH, Benlliure J, Enqvist T, Junghans AR, Kelić A, and Rejmund F

Abstract

A new experimental approach is introduced to investigate the relaxation of the nuclear deformation degrees of freedom. Highly excited fissioning systems with compact shapes and low angular momenta are produced in peripheral relativistic heavy-ion collisions. Both fission fragments are identified in atomic number. Fission cross sections and fission-fragment element distributions are determined as a function of the fissioning element. From the comparison of these new observables with a nuclear-reaction code a value for the transient time is deduced.

Published
2004
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440. Shell structure of the near-dripline nucleus 23O.

Author

Cortina-Gil D, Fernandez-Vazquez J, Aumann T, Baumann T, Benlliure J, Borge MJ, Chulkov LV, Datta Pramanik U, Forssén C, Fraile LM, Geissel H, Gerl J, Hammache F, Itahashi K, Janik R, Jonson B, Mandal S, Markenroth K, Meister M, Mocko M, Münzenberg G, Ohtsubo T, Ozawa A, Prezado Y, Pribora V, Riisager K, Scheit H, Schneider R, Schrieder G, Simon H, Sitar B, Stolz A, Strmen P, Sümmerer K, Szarka I, and Weick H

Abstract

Breakup reactions were used to study the ground-state configuration of the neutron-rich isotope 23O. The 22O fragments produced in one-nucleon removal from 23O at 938 MeV/nucleon in a carbon target were detected in coincidence with deexciting gamma rays. The widths of the longitudinal momentum distributions of the 22O fragments and the one-neutron removal cross sections were interpreted in the framework of a simple theoretical model which favors the assignment of Ipi = 1/2+ to the 23O ground state.

Published
2004
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441. Experimental indications for the response of the spectators to the participant blast.

Author

Ricciardi MV, Enqvist T, Pereira J, Benlliure J, Bernas M, Casarejos E, Henzl V, Kelić A, Taïeb J, and Schmidt KH

Abstract

Precise momentum distributions of identified projectile fragments, formed in the reactions 238U+Pb and 238U+Ti at 1A GeV, are measured with a high-resolution magnetic spectrometer. With increasing mass loss, the velocities first decrease as expected from previously established systematics, then level off, and finally increase again. Light fragments are on the average even faster than the projectiles. This finding is interpreted as the response of the spectators to the participant blast. The reacceleration of projectile spectators is sensitive to the nuclear mean field and provides a new tool for investigating the equation of state of nuclear matter.

Published
2003
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442. Cross sections of spallation residues produced in 1A GeV 208Pb on proton reactions.

Author

Wlazło W, Enqvist T, Armbruster P, Benlliure J, Bernas M, Boudard A, Czájkowski S, Legrain R, Leray S, Mustapha B, Pravikoff M, Rejmund F, Schmidt KH, Stéphan C, Taieb J, Tassan-Got L, and Volant C

Abstract

Spallation residues produced in 1 GeV per nucleon 208Pb on proton reactions have been studied using the Fragment Separator facility at GSI. Isotopic production cross sections of elements from 61Pm to 82Pb have been measured down to 0.1 mb with a high accuracy. The recoil kinetic energies of the produced fragments were also determined. The obtained cross sections agree with most of the few existing gamma-spectroscopic data. The data are compared with different intranuclear-cascade and evaporation-fission models. Drastic deviations were found for a standard code used in technical applications.

Published
2000
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