Search

Your search keyword '"Pirovano, Elisa"' showing total 22 results
Start Over Author "Pirovano, Elisa"
22 results on '"Pirovano, Elisa"'

1. New insights on fission of $^{235}$U induced by high energy neutrons from a new measurement at CERN n\_TOF

Author

Manna, Alice, Pirovano, Elisa, and Collaboration, the n\_TOF

Subjects
Nuclear Experiment
Abstract

The $^{235}$U(n,f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n\_TOF facility, extending the upper limit of the only previous measurement in the literature by more than 200 MeV. Two independent detection systems were used simultaneously to extract the fission cross section. For neutron energies below 200 MeV, the present results agree within one standard deviation with the data available in literature and are well reproduced by the IAEA evaluation. Above 200 MeV, the comparison of model calculations to the present data indicates the need to introduce a transient time in the description of the neutron-induced fission process in order to allow the simultaneous description of (n,f) and (p,f) reactions.

Published
2024

2. Experimental setup of the 239Pu neutron capture and fission cross-section measurements at n_TOF, CERN

Author

Sanchez-Caballero Adrian, Alcayne Victor, Andrzejewski Józef, Cano-Ott Daniel, Cardinaels Thomas, Dries Peter, Gawlik-Ramiega Aleksandra, González-Romero Enrique, Heyse Jan, Leinders Gregory, Martínez Trinitario, Mendoza Emilio, Moens Andre, Pérez de Rada Alberto, Perkowski Jarosław, Plompen Arjan, Paradela Carlos, Schillebeeckx Peter, Sibbens Goedele, Van Hecke Karen, Vanaken Koen, Vanleeuw David, Verguts Ken, Verwerft Marc, Wynants Ruud, Aberle Oliver, Altieri Saverio, Amaducci Simone, Babiano-Suarez Victor, Bacak Michael, Balibrea Correa Javier, Beltrami Chiara, Bennett Samuel, Bernardes Ana-Paula, Berthoumieux Eric, Beyer Roland, Boromiza Marian, Bosnar Damir, Caamaño Manuel, Calviño Francisco, Calviani Marco, Casanovas Adria, Castelluccio Donato, Cerutti Francesco, Cescutti Gabriele, Chasapoglou Sotirios, Chiaveri Enrico, Colombetti Paolo, Colonna Nicola, Console Camprini Patrizio, Cortés Guillem, Cortés-Giraldo Miguel, Cosentino Luigi, Cristallo Sergio, Dellmann, Di Castro Mario, Di Maria Salvatore, Diakaki Maria, Dietz Mirco, Domingo-Pardo César, Dressler Rugard, Dupont Emmeric, Durán Ignacio, Eleme Zinovia, Fargier Sylvain, Fernández Begoña, Fernández-Domínguez Beatriz, Finocchiaro Paolo, Fiore Salvatore, Furman Valter, García-Infantes Francisco, Gervino Gianpiero, Gilardoni Simone, Guerrero Carlos, Gunsing Frank, Gustavino Carlo, Hillman William, Jenkins David, Jericha Erwin, Junghans Arnd, Kadi Yacine, Kaperoni Kalliopi, Kaur Gurpreet, Kimura Atsushi, Knapová Ingrid, Kokkoris Michael, Kopatch Yury, Krtička Milan, Kyritsis Nikolaos, Ladarescu Ion, Lederer-Woods Claudia, Lerendegui-Marco Jorge, Lerner Giuseppe, Manna Alice, Masi Alessandro, Massimi Cristian, Mastinu Pierfrancesco, Mastromarco Mario, Maugeri Emilio-Andrea, Mazzone Annamaria, Mengoni Alberto, Michalopoulou Veatriki, Milazzo Paolo, Mucciola Riccardo, Murtas Fabrizio, Musacchio-Gonzalez Elizabeth, Musumarra Agatino, Negret Alexandru, Pérez-Maroto Pablo, Patronis Nikolas, Pavón-Rodríguez José-Antonio, Pellegriti Maria, Petrone Cristina, Pirovano Elisa, Plaza del Olmo Julio, Pomp Stephan, Porras Ignacio, Praena Javier, Quesada José-Manuel, Reifarth René, Rochman Dimitri, Romanets Yuriy, Rubbia Carlo, Sabaté-Gilarte Marta, Schumann Dorothea, Sekhar Adhitya, Smith Gavin, Sosnin Nikolay, Stamati Maria-Elisso, Sturniolo Alessandro, Tagliente Giuseppe, Tarifeño-Saldivia Ariel, Tarrío Diego, Torres-Sánchez Pablo, Vagena, Valenta Stanislav, Variale Vincenzo, Vaz Pedro, Vecchio Gianfranco, Vescovi Diego, Vlachoudis Vasilis, Vlastou Rosa, Wallner Anton, Woods Philip-John, Wright Tobias, Zarrella Roberto, and Žugec Petar

Subjects
Physics, QC1-999
Abstract

The experimental setup of the new measurement of 239Pu fission and capture cross-section in the n_TOF time-of-flight facility at CERN is presented. The measurement aims to address the needs and demands of nuclear data users. The experiment incorporates an innovative fast Fission Fragment Detector and the n_TOF Total Absorption Calorimeter, enabling the implementation of the fission tagging technique. Preliminary results exhibit the robust performance of the detector systems, along with the high quality of the new 239Pu samples. These samples were exclusively produced for this measurement by the European Commission’s Joint Research Centre in Geel.

Published
2024
Full Text
View/download PDF

3. Measurement of the 235U(n,f) cross section relative to the 10B(n,α) reaction with Micromegas detectors at the CERN n_TOF facility: First results

Author

Michalopoulou Veatriki, Diakaki Maria, Vlastou Rosa, Kokkoris Michael, Stamatopoulos Athanasios, Tsinganis Andrea, Eleme Zinovia, Patronis Nikolas, Heyse Jan, Schillebeeckx Peter, Tassan-Got Laurent, Barbagallo Massimo, Colonna Nicola, Urlass Sebastian, Macina Daniela, Chiaveri Enrico, Aberle Oliver, Alcayne Victor, Amaducci Simone, Andrzejewski Józef, Audouin Laurent, Babiano-Suarez Victor, Bacak Michael, Bennett Samuel, Berthoumieux Eric, Billowes Jon, Bosnar Damir, Brown Adam, Busso Maurizio, Caamaño Manuel, Caballero-Ontanaya Luis, Calviño Francisco, Calviani Marco, Cano-Ott Daniel, Casanovas Adria, Cerutti Francesco, Cortés Guillem, Cortés-Giraldo Miguel, Cosentino Luigi, Cristallo Sergio, Damone Lucia-Anna, Davies Paul-John, Dietz Mirco, Domingo-Pardo César, Dressler Rugard, Ducasse Quentin, Dupont Emmeric, Durán Ignacio, Fernández-Domínguez Beatriz, Ferrari Alfredo, Finocchiaro Paolo, Göbel Kathrin, Garg Ruchi, Gawlik-Ramięga Aleksandra, Gilardoni Simone, Gonçalves Isabel, González-Romero Enrique, Guerrero Carlos, Gunsing Frank, Harada Hideo, Heinitz Stephan, Jenkins David, Junghans Arnd, Käppeler† Franz, Kadi Yacine, Kimura Atsushi, Knapová Ingrid, Krtička Milan, Kurtulgil Deniz, Ladarescu Ion, Lederer-Woods Claudia, Leeb Helmut, Lerendegui-Marco Jorge, Lonsdale Sarah-Jane, Manna Alice, Martínez Trinitario, Masi Alessandro, Massimi Cristian, Mastinu Pierfrancesco, Mastromarco Mario, Maugeri Emilio-Andrea, Mazzone Annamaria, Mendoza Emilio, Mengoni Alberto, Milazzo Paolo, Mingrone Federica, Moreno-Soto Javier, Musumarra Agatino, Negret Alexandru, Nolte Ralf, Ogállar Francisco, Oprea Andreea, Pavlik Andreas, Perkowski Jarosław, Piersanti Luciano, Petrone Cristina, Pirovano Elisa, Porras Ignacio, Praena Javier, Quesada José-Manuel, Ramos-Doval Diego, Rauscher Thomas, Reifarth René, Rochman Dimitri, Rubbia Carlo, Sabaté-Gilarte Marta, Saxena Alok, Schumann Dorothea, Sekhar Adhitya, Smith Gavin, Sosnin Nikolay, Sprung Peter, Tagliente Giuseppe, Tain José, Tarifeño-Saldivia Ariel, Thomas Benedikt, Torres-Sánchez Pablo, Ulrich Jiri, Valenta Stanislav, Vannini Gianni, Variale Vincenzo, Vaz Pedro, Ventura Alberto, Vescovi Diego, Vlachoudis Vasilis, Wallner Anton, Woods Philip-John, Wright Tobias, and Žugec Petar

Subjects
Physics, QC1-999
Abstract

Neutron cross section measurements are often made relative to a neutron cross section standard. Thus, the accuracy of the neutron standards determines the best possible accuracy of the neutron measurements. The 235U(n,f) cross section is widely used as reference, while it is considered a standard at thermal point and between 0.15 to 200 MeV. For this reason, additional cross section data for the 235U(n,f) reaction are useful in order to improve the accuracy and to extend the energy range of the standard. In this work, preliminary results of the measurement of the 235U(n,f) cross-section relative to the standard 10B(n,a) reaction are presented. The high accuracy measurement was performed at the experimental area EAR-1 of the n_TOF facility at CERN, aiming at covering the energy range from the thermal region up to approximately 100 keV. The samples were produced at JRC-Geel in Belgium, while the experimental setup was based on Micromegas detectors.

Published
2023
Full Text
View/download PDF

5. Tests of Various Scintillator Detectors in Selected Mono-Energetic Neutron Beams

Author

Jančář Aleš, Čulen Jiří, Mravec Filip, Košťál Michal, Dlhopolček Daniel, Pirovano Elisa, Nolte Ralf, Cvachovec František, Přenosil Václav, and Matěj Zdeněk

Subjects
scintillation detectors, mono-energetic neutron sources, pulse-shape discrimination, fwhm, digital-signal processing, Physics, QC1-999
Abstract

In this paper we study quality of three types of organic scintillators stilbene, p-terphenyl and EJ-299-33. We used monoenergetic neutron fields with a wide range of neutron energies in PTB Braunschweig. All the tests were carried out with NGA-01 spectrometer. The results of the measurements are evaluated spectra from the spectrometer. We discuss the quality of each scintillator, such as the FWHM of the peaks.

Published
2021
Full Text
View/download PDF

6. Neutron transmission measurements at nELBE

Author

Junghans Arnd, Beyer Roland, ClauBner Jürgen, Kögler Toni, Urlass Sebastian, Bemmerer Daniel, Ferrari Anna, Schwengner Ronald, Wagner Andreas, Dietz Mirco, Frotscher Axel, Grieger Marcel, Hensel Thomas, Koppitz Martina, Ludwig Felix, Turkat Steffen, Nolte Ralf, Pirovano Elisa, Kopecky Stefan, Nyman Markus, Plompen Arjan, Schillebeeckx Peter, Borris Erik, Reifarth René, Veltum Daniel, Weigand Mario, Glorius Jan, Görres Joachim, Oberlack Uwe, and Wenz Daniel

Subjects
Physics, QC1-999
Abstract

Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a relative measurement. The neutron spectrum of the photoneutron source nELBE extends in the fast region from about 100 keV to 10 MeV and has favourable conditions for transmission measurements due to the low instantaneous flux of neutrons and low gamma-flash background. Several materials of interest (in part included in the CIELO evaluation or on the HPRL of OECD/NEA) have been investigated: 197Au [1, 2], natFe [2], natW [2], 238U, natPt, 4He, natO, natNe, natXe. For gaseous targets high pressure gas cells with flat end-caps have been built that hold up to 200 bar pressure. The experimental setup will be presented including results from several transmission experiments and the data analysis leading to the total cross sections will be discussed.

Published
2020
Full Text
View/download PDF

7. New equipment for neutron scattering cross-section measurements at GELINA

Author

Nyman Markus, Adam Thomas, Borcea Catalin, Boromiza Marian, Dessagne Philippe, Henning Gregoire, Kerveno Maëlle, Negret Alexandru, Olacel Adina, Pirovano Elisa, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

Two new experimental setups are being developed at European Commission’s Joint Research Centre in Geel, Belgium. The scintillator array ELISA (ELastic and Inelastic Scattering Array) is for high-quality neutron scattering cross section and angular distribution measurements. It has the capability to separate neutron-and photon-induced events via pulse-shape analysis. Inelastic scattering can also be resolved from the elastic channel. The ELISA setup and data analysis procedure were validated by performing measurements using carbon and iron samples. The DELCO spectrometer (Detection of ELectrons from COnversion) is intended for inelastic neutron scattering cross-section measurements in cases where the detection of γ rays is not feasible. The current status of DELCO, results from the first tests, and future prospects will be discussed.

Published
2020
Full Text
View/download PDF

8. Measurement of the angular distribution of neutrons scattered from deuterium below 3 MeV

Author

Pirovano Elisa, Nolte Ralf, Nyman Markus, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

The differential cross section of neutron scattering on deuterium was investigated in the energy range from 400 keV to 2.5 MeV using the recoil detection method, irradiating with monoenergetic neutrons a proportional counter filled with deuterated gases. Comparing simulations of the transport of neutrons and recoil nuclei in the detector to the experimental pulse-height distribution, it was possible to establish a procedure for the determination of the coefficients of the Legendre expansion of the n-d angular distribution.

Published
2020
Full Text
View/download PDF

10. Neutron transmission measurements at nELBE.

Author

Junghans, Arnd, Beyer, Roland, ClauBner, Jürgen, Kögler, Toni, Urlass, Sebastian, Bemmerer, Daniel, Ferrari, Anna, Schwengner, Ronald, Wagner, Andreas, Dietz, Mirco, Frotscher, Axel, Grieger, Marcel, Hensel, Thomas, Koppitz, Martina, Ludwig, Felix, Turkat, Steffen, Nolte, Ralf, Pirovano, Elisa, Kopecky, Stefan, and Nyman, Markus

Subjects
NEUTRONS, NUCLEAR cross sections, MEASUREMENT, DATA analysis, NEUTRONS spectra
Abstract

Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a relative measurement. The neutron spectrum of the photoneutron source nELBE extends in the fast region from about 100 keV to 10 MeV and has favourable conditions for transmission measurements due to the low instantaneous flux of neutrons and low gamma-flash background. Several materials of interest (in part included in the CIELO evaluation or on the HPRL of OECD/NEA) have been investigated: 197Au [1, 2], natFe [2], natW [2], 238U, natPt, 4He, natO, natNe, natXe. For gaseous targets high pressure gas cells with flat end-caps have been built that hold up to 200 bar pressure. The experimental setup will be presented including results from several transmission experiments and the data analysis leading to the total cross sections will be discussed. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

11. First results of the 140Ce(n,γ)141Ce cross-section measurement at n_TOF

Author

n_TOF Collaboration, Amaducci, Simone, Colonna, Nicola, Cosentino, Luigi, Cristallo, Sergio, Finocchiaro, Paolo, Krtička, Milan, Massimi, Cristian, Mastromarco, Mario, Mazzone, Annamaria, Mengoni, Alberto, Valenta, Stanislav, Aberle, Oliver, Alcayne, Victor, Andrzejewski, Józef, Audouin, Laurent, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamaño, Manuel, Caballero-Ontanaya, Luis, Calviño, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chiaveri, Enrico, Cortés, Guillem, Cortés-Giraldo, Miguel, Damone, Lucia-Anna, Davies, Paul-John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, Cesar, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Durán, Ignacio, Eleme, Zinovia, Fernández-Domínguez, Beatriz, Ferrari, Alfredo, Furman, Valter, Göbel, Kathrin, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Gonçalves, Isabel, González-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Junghans, Arnd, Käppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Knapova, Ingrid, Kokkoris, Michael, Kopatch, Yuri, Kurtulgil, Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martínez, Trinitario, Masi, Alessandro, Mastinu, Pierfrancesco, Maugeri, Emilio-Andrea, Mendoza, Emilio, Michalopoulou, Veatriki, Milazzo, Paolo, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogállar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Perkowski, Jarosław, Piersanti, Luciano, Petrone, Cristina, Pirovano, Elisa, Porras, Ignacio, Praena, Javier, Quesada, José-Manuel, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, René, Rochman, Dimitri, Rubbia, Carlo, Sabaté-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Gavin, Sosnin, Nikolay, Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, José, Tarifeño-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sánchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, PhilipJohn, Wright, Tobias, Žugec, Petar, n_TOF Collaboration, Universidade de Santiago de Compostela. Departamento de Física de Partículas, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, 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 Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, n_TOF, ITA, FRA, DEU, ESP, GRC, Amaducci S., Colonna N., Cosentino L., Cristallo S., Finocchiaro P., Krticka M., Massimi C., Mastromarco M., Mazzone A., Mengoni A., Valenta S., Aberle O., Alcayne V., Andrzejewski J., Audouin L., Babiano-Suarez V., Bacak M., Barbagallo M., Bennett S., Berthoumieux E., Billowes J., Bosnar D., Brown A., Busso M., Caamano M., Caballero-Ontanaya L., Calvino F., Calviani M., Cano-Ott D., Casanovas A., Cerutti F., Chiaveri E., Cortes G., Cortes-Giraldo M., Damone L.-A., Davies P.-J., Diakaki M., Dietz M., Domingo-Pardo C., Dressler R., Ducasse Q., Dupont E., Duran I., Eleme Z., Fernandez-Dominguez B., Ferrari A., Furman V., Gobel K., Garg R., Gawlik A., Gilardoni S., Goncalves I., Gonzalez-Romero E., Guerrero C., Gunsing F., Harada H., Heinitz S., Heyse J., Jenkins D., Junghans A., Kappeler F., Kadi Y., Kimura A., Knapova I., Kokkoris M., Kopatch Y., Kurtulgil D., Ladarescu I., Lederer-Woods C., Leeb H., Lerendegui-Marco J., Lonsdale S.-J., Macina D., Manna A., Martinez T., Masi A., Mastinu P., Maugeri E.-A., Mendoza E., Michalopoulou V., Milazzo P., Mingrone F., Moreno-Soto J., Musumarra A., Negret A., Ogallar F., Oprea A., Patronis N., Pavlik A., Perkowski J., Piersanti L., Petrone C., Pirovano E., Porras I., Praena J., Quesada J.-M., Ramos-Doval D., Rauscher T., Reifarth R., Rochman D., Rubbia C., Sabate-Gilarte M., Saxena A., Schillebeeckx P., Schumann D., Sekhar A., Smith G., Sosnin N., Sprung P., Stamatopoulos A., Tagliente G., Tain J., Tarifeno-Saldivia A., Tassan-Got L., Thomas B., Torres-Sanchez P., Tsinganis A., Ulrich J., Urlass S., Vannini G., Variale V., Vaz P., Ventura A., Vescovi D., Vlachoudis V., Vlastou R., Wallner A., Woods P.J., Wright T., Zugec P., 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
cross-section, Cerium oxide, Capture, General Physics and Astronomy, QC793-793.5, 7. Clean energy, 01 natural sciences, Ce, chemistry.chemical_compound, neutron, $^{140}$Ce, n_TOF, 010303 astronomy & astrophysics, Physics, Deuterated benzene, Elementary particle physics, nucleosynthesis, Cerium, cerium, Cosmic electrodynamics, Atomic physics, Nucleosynthesis, neutron capture, Cross-section, chemistry.chemical_element, Neutron, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 0103 physical sciences, Nuclear Physics - Experiment, ddc:530, 010306 general physics, capture, Nucleosynthesi, Ones electromagnètiques, Física [Àrees temàtiques de la UPC], Electromagnetic waves, Nuclear data, 140Ce, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, chemistry, 13. Climate action, s-process, MACS, Electrodinàmica còsmica
Abstract

The cerium oxide material for this measurement was provided by T. Katabuchi of the Tokyo Institute of Technology., An accurate measurement of the 140Ce(n,g) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the 140Ce capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in 140Ce to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the 140Ce Maxwellian-averaged cross-section.

Published
2021

12. Neutron inelastic cross section measurements for natTi

Author

Olacel Adina, Belloni Francesca, Borcea Catalin, Boromiza Marian, Dessagne Philippe, Henning Gregoire, Kerveno Maëlle, Negret Alexandru, Nyman Markus, Pirovano Elisa, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

A neutron inelastic scattering experiment was performed at the GELINA (Geel Electron LINear Accelerator) neutron source of the European Commission Joint Research Centre Geel (EC-JRC Geel) with the aim of determining the reaction cross sections for the stable isotopes of natural titanium. A 235U fission chamber was used to monitor neutrons with energies up to 20 MeV. The GAINS (Gamma Array for Inelastic Neutron Scattering) spectrometer was employed to detect the γ rays resulting from the decay of the excited nuclei. We determined the γ-ray production cross sections of the first transitions in the 46,48,49,50Ti isotopes. The experimental values were compared with previous reported results and also with theoretical calculations performed with the TALYS 1.8 code using the default input parameters. Uncertainties of around 5% were obtained for the strongest observed transitions.

Published
2017
Full Text
View/download PDF

13. Inelastic neutron scattering cross-section measurements on 7Li and 63,65Cu

Author

Nyman Markus, Belloni Francesca, Ichinkhorloo Dagvadorj, Pirovano Elisa, Plompen Arjan, and Rouki Chariklia

Subjects
Physics, QC1-999
Abstract

The γ-ray production cross section for the 477.6-keV transition in 7Li following inelastic neutron scattering has been measured from the reaction threshold up to 18 MeV. This cross section is interesting as a possible standard for other inelastic scattering measurements. The experiment was conducted at the Geel Electron LINear Accelerator (GELINA) pulsed white neutron source with the Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer. Previous measurements of this cross section are reviewed and compared with our results. Recently, this cross section has also been calculated using the continuum discretized coupled-channels (CDCC) method. Experiments for studying neutrinoless double-β decay (2β0ν) or other very rare processes require greatly reducing the background radiation level (both intrinsic and external). Copper is a common shielding and structural material, used extensively in experiments such as COBRA, CUORE, EXO, GERDA, and MAJORANA. Understanding the background contribution arising from neutron interactions in Cu is important when searching for very weak experimental signals. Neutron inelastic scattering on natCu was investigated with GAINS. The results are compared with previous experimental data and evaluated nuclear data libraries.

Published
2017
Full Text
View/download PDF

14. Measurements of neutron scattering angular distributions with a new scintillator setup

Author

Pirovano Elisa, Beyer Roland, Junghans Arnd, Nolte Ralf, Nyman Markus, and Plompen Arjan

Subjects
Physics, QC1-999
Abstract

A new experimental setup for the measurement of neutron scattering cross sections and angular distributions is currently being developed at the neutron time-of-flight facility GELINA, at the JRC-Geel. Up to 32 liquid organic scintillators are employed for the detection of neutrons scattered from a sample of the investigated material. The differential cross section is measured at eight different angles, and the angle-integrated cross section is obtained from the differential data by numerical integration. Two experiments for the study of scattering on iron were carried out, one at GELINA and the other at nELBE (HZDR). The first results for the angular distributions of elastic scattering in the neutron energy range from 2 to 6 MeV are here presented and compared with evaluations from the major nuclear data libraries.

Published
2017
Full Text
View/download PDF

15. First Results of the Ce-140(n,gamma)Ce-141 Cross-Section Measurement at n_TOF

Author

Amaducci, Simone, Colonna, Nicola, Cosentino, Luigi, Cristallo, Sergio, Finocchiaro, Paolo, Massimi, Cristian, Mastromarco, Mario, Mazzone, Annamaria, Mengoni, Alberto, Valenta, Stanislav, Aberle, Oliver, Alcayne, Victor, Andrzejewski, Jozef, Audouin, Laurent, Babiano-Suarez, Victor, Bacak, Michael, Barbagallo, Massimo, Bennett, Samuel, Berthoumieux, Eric, Billowes, Jon, Bosnar, Damir, Brown, Adam, Busso, Maurizio, Caamano, Manuel, Caballero-Ontanaya, Luis, Calvino, Francisco, Calviani, Marco, Cano-Ott, Daniel, Casanovas, Adria, Cerutti, Francesco, Chiaveri, Enrico, Cortes, Guillem, Cortes-Giraldo, Miguel, Damone, Lucia-Anna, Davies, Paul-John, Diakaki, Maria, Dietz, Mirco, Domingo-Pardo, Cesar, Dressler, Rugard, Ducasse, Quentin, Dupont, Emmeric, Duran, Ignacio, Eleme, Zinovia, Fernandez-Dominguez, Beatriz, Ferrari, Alfredo, Furman, Valter, Goebel, Kathrin, Garg, Ruchi, Gawlik, Aleksandra, Gilardoni, Simone, Goncalves, Isabel, Gonzalez-Romero, Enrique, Guerrero, Carlos, Gunsing, Frank, Harada, Hideo, Heinitz, Stephan, Heyse, Jan, Jenkins, David, Junghans, Arnd, Kaeppeler, Franz, Kadi, Yacine, Kimura, Atsushi, Knapova, Ingrid, Kokkoris, Michael, Kopatch, Yuri, Kurtulgil, Deniz, Ladarescu, Ion, Lederer-Woods, Claudia, Leeb, Helmut, Lerendegui-Marco, Jorge, Lonsdale, Sarah-Jane, Macina, Daniela, Manna, Alice, Martinez, Trinitario, Masi, Alessandro, Mastinu, Pierfrancesco, Maugeri, Emilio-Andrea, Mendoza, Emilio, Michalopoulou, Veatriki, Milazzo, Paolo, Mingrone, Federica, Moreno-Soto, Javier, Musumarra, Agatino, Negret, Alexandru, Ogallar, Francisco, Oprea, Andreea, Patronis, Nikolas, Pavlik, Andreas, Piersanti, Luciano, Petrone, Cristina, Pirovano, Elisa, Porras, Ignacio, Praena, Javier, Quesada, Jose-Manuel, Ramos-Doval, Diego, Rauscher, Thomas, Reifarth, Rene, Rochman, Dimitri, Rubbia, Carlo, Sabate-Gilarte, Marta, Saxena, Alok, Schillebeeckx, Peter, Schumann, Dorothea, Sekhar, Adhitya, Smith, Gavin, Sosnin, Nikolay, Sprung, Peter, Stamatopoulos, Athanasios, Tagliente, Giuseppe, Tain, Jose, Tarifeno-Saldivia, Ariel, Tassan-Got, Laurent, Thomas, Benedikt, Torres-Sanchez, Pablo, Tsinganis, Andrea, Ulrich, Jiri, Urlass, Sebastian, Vannini, Gianni, Variale, Vincenzo, Vaz, Pedro, Ventura, Alberto, Vescovi, Diego, Vlachoudis, Vasilis, Vlastou, Rosa, Wallner, Anton, Woods, PhilipJohn, Wright, Tobias, and Zugec, Petar

Abstract

An accurate measurement of the Ce-140(n,gamma) energy-dependent cross-section was performed at the n_TOF facility at CERN. This cross-section is of great importance because it represents a bottleneck for the s-process nucleosynthesis and determines to a large extent the cerium abundance in stars. The measurement was motivated by the significant difference between the cerium abundance measured in globular clusters and the value predicted by theoretical stellar models. This discrepancy can be ascribed to an overestimation of the Ce-140 capture cross-section due to a lack of accurate nuclear data. For this measurement, we used a sample of cerium oxide enriched in Ce-140 to 99.4%. The experimental apparatus consisted of four deuterated benzene liquid scintillator detectors, which allowed us to overcome the difficulties present in the previous measurements, thanks to their very low neutron sensitivity. The accurate analysis of the p-wave resonances and the calculation of their average parameters are fundamental to improve the evaluation of the Ce-140 Maxwellian-averaged cross-section.

Published
2021
Full Text
View/download PDF

16. First Results of the 140Ce(n,γ)141Ce Cross-Section Measurement at n_TOF

Author

Amaducci, Simone, primary, Colonna, Nicola, additional, Cosentino, Luigi, additional, Cristallo, Sergio, additional, Finocchiaro, Paolo, additional, Krtička, Milan, additional, Massimi, Cristian, additional, Mastromarco, Mario, additional, Mazzone, Annamaria, additional, Mengoni, Alberto, additional, Valenta, Stanislav, additional, Aberle, Oliver, additional, Alcayne, Victor, additional, Andrzejewski, Józef, additional, Audouin, Laurent, additional, Babiano-Suarez, Victor, additional, Bacak, Michael, additional, Barbagallo, Massimo, additional, Bennett, Samuel, additional, Berthoumieux, Eric, additional, Billowes, Jon, additional, Bosnar, Damir, additional, Brown, Adam, additional, Busso, Maurizio, additional, Caamaño, Manuel, additional, Caballero-Ontanaya, Luis, additional, Calviño, Francisco, additional, Calviani, Marco, additional, Cano-Ott, Daniel, additional, Casanovas, Adria, additional, Cerutti, Francesco, additional, Chiaveri, Enrico, additional, Cortés, Guillem, additional, Cortés-Giraldo, Miguel, additional, Damone, Lucia-Anna, additional, Davies, Paul-John, additional, Diakaki, Maria, additional, Dietz, Mirco, additional, Domingo-Pardo, Cesar, additional, Dressler, Rugard, additional, Ducasse, Quentin, additional, Dupont, Emmeric, additional, Durán, Ignacio, additional, Eleme, Zinovia, additional, Fernández-Domínguez, Beatriz, additional, Ferrari, Alfredo, additional, Furman, Valter, additional, Göbel, Kathrin, additional, Garg, Ruchi, additional, Gawlik, Aleksandra, additional, Gilardoni, Simone, additional, Gonçalves, Isabel, additional, González-Romero, Enrique, additional, Guerrero, Carlos, additional, Gunsing, Frank, additional, Harada, Hideo, additional, Heinitz, Stephan, additional, Heyse, Jan, additional, Jenkins, David, additional, Junghans, Arnd, additional, Käppeler, Franz, additional, Kadi, Yacine, additional, Kimura, Atsushi, additional, Knapova, Ingrid, additional, Kokkoris, Michael, additional, Kopatch, Yuri, additional, Kurtulgil, Deniz, additional, Ladarescu, Ion, additional, Lederer-Woods, Claudia, additional, Leeb, Helmut, additional, Lerendegui-Marco, Jorge, additional, Lonsdale, Sarah-Jane, additional, Macina, Daniela, additional, Manna, Alice, additional, Martínez, Trinitario, additional, Masi, Alessandro, additional, Mastinu, Pierfrancesco, additional, Maugeri, Emilio-Andrea, additional, Mendoza, Emilio, additional, Michalopoulou, Veatriki, additional, Milazzo, Paolo, additional, Mingrone, Federica, additional, Moreno-Soto, Javier, additional, Musumarra, Agatino, additional, Negret, Alexandru, additional, Ogállar, Francisco, additional, Oprea, Andreea, additional, Patronis, Nikolas, additional, Pavlik, Andreas, additional, Perkowski, Jarosław, additional, Piersanti, Luciano, additional, Petrone, Cristina, additional, Pirovano, Elisa, additional, Porras, Ignacio, additional, Praena, Javier, additional, Quesada, José-Manuel, additional, Ramos-Doval, Diego, additional, Rauscher, Thomas, additional, Reifarth, René, additional, Rochman, Dimitri, additional, Rubbia, Carlo, additional, Sabaté-Gilarte, Marta, additional, Saxena, Alok, additional, Schillebeeckx, Peter, additional, Schumann, Dorothea, additional, Sekhar, Adhitya, additional, Smith, Gavin, additional, Sosnin, Nikolay, additional, Sprung, Peter, additional, Stamatopoulos, Athanasios, additional, Tagliente, Giuseppe, additional, Tain, José, additional, Tarifeño-Saldivia, Ariel, additional, Tassan-Got, Laurent, additional, Thomas, Benedikt, additional, Torres-Sánchez, Pablo, additional, Tsinganis, Andrea, additional, Ulrich, Jiri, additional, Urlass, Sebastian, additional, Vannini, Gianni, additional, Variale, Vincenzo, additional, Vaz, Pedro, additional, Ventura, Alberto, additional, Vescovi, Diego, additional, Vlachoudis, Vasilis, additional, Vlastou, Rosa, additional, Wallner, Anton, additional, Woods, PhilipJohn, additional, Wright, Tobias, additional, and Žugec, Petar, additional

Published
2021
Full Text
View/download PDF

20. JRC data for the Ti-48 standard

Author

OLACEL ADINA-ADRIANA, BELLONI FRANCESCA, BORCEA C, NEGRET A., NYMAN MARKUS, PIROVANO ELISA, and PLOMPEN Arjan

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Nuclear Experiment
Abstract

A measurement of the 48Ti(n,n’gamma)48Ti reaction was performed at the GELINA neutron source of EC-JRC-IRMM using the GAINS  spectrometer with the purpose of establishing a new gamma-ray standard for neutron induced cross section measurements. A natural target was used and the gamma-production cross section was measured for 10 transitions in the neutron energy range 0-18 MeV. The lowest achieved uncertainty was 4.8%., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2015

21. Inelastic neutron scattering cross-section measurements on 7Li and 63,65Cu.

Author

Nyman, Markus, Belloni, Francesca, Dagvadorj Ichinkhorloo, Pirovano, Elisa, Plompen, Arjan, and Rouki, Chariklia

Subjects
NEUTRONS, NEUTRON scattering, NUCLEAR reactions, SPECTROMETERS, THRESHOLD energy
Abstract

The article reports that γ -ray production cross section for the 477.6-keV transition in 7Li following inelastic neutron scattering has been measured from the nuclear reaction threshold up to 18MeV. It mentions that the mentioned experiment was conducted at the Geel Electron LINear Accelerator (GELINA) pulsed white neutron source with the Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer.

Published
2017
Full Text
View/download PDF

22. Neutron inelastic cross section measurements for natTi.

Author

Olacel, Adina, Belloni, Francesca, Borcea, Catalin, Boromiza, Marian, Dessagne, Philippe, Henning, Gregoire, Kerveno, Maëlle, Negret, Alexandru, Nyman, Markus, Pirovano, Elisa, and Plompen, Arjan

Subjects
INELASTIC cross sections, NEUTRON cross sections, TITANIUM, INELASTIC neutron scattering, SPECTROMETERS
Abstract

A neutron inelastic scattering experiment was performed at the GELINA (Geel Electron LINear Accelerator) neutron source of the European Commission Joint Research Centre Geel (EC-JRC Geel) with the aim of determining the reaction cross sections for the stable isotopes of natural titanium. A 235U fission chamber was used to monitor neutrons with energies up to 20MeV. The GAINS (Gamma Array for Inelastic Neutron Scattering) spectrometer was employed to detect the γ rays resulting from the decay of the excited nuclei. We determined the γ -ray production cross sections of the first transitions in the 46,48,49,50Ti isotopes. The experimental values were compared with previous reported results and also with theoretical calculations performed with the TALYS 1.8 code using the default input parameters. Uncertainties of around 5% were obtained for the strongest observed transitions. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results