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1. Neutron capture and total cross-section measurements on 94,95,96Mo at n_TOF and GELINA

Author

Mucciola R., Paradela C., Manna A., Alaerts G., Massimi C., Kopecky S., Mengoni A., Moens A., Schillebeeckx P., Wynants R., Aberle O., Alcayne V., Altieri S., Amaducci S., Amar Es-Sghir H., Andrzejewski J., Babiano-Suarez V., Bacak M., Balibrea J., Bennett S., Bernardes A. P., Berthoumieux E., Bosnar D., Busso M., Caamaño M., Calviño F., Calviani M., Cano-Ott D., Casanovas A., Castelluccio D. M., Cerutti F., Cescutti G., Chasapoglou S., Chiaveri E., Colombetti P., Colonna N., Console Camprini P. C., Cortés G., Cortés-Giraldo M. A., Cosentino L., Cristallo S., Di Castro M., Diacono D., Diakaki M., Dietz M., Domingo-Pardo C., Dressler R., Dupont E., Durán I., Eleme Z., Fargier S., Fernández-Domínguez B., Finocchiaro P., Fiore S., Furman V., García-Infantes F., Gawlik-Ramięga A., Gervino G., Gilardoni S., González-Romero E., Guerrero C., Gunsing F., Gustavino C., Heyse J., Jenkins D. G., Jericha E., Junghans A., Kadi Y., Katabuchi T., Knapová I., Kokkoris M., Kopatch Y., Krtička M., Kurtulgil D., Ladarescu I., Lederer-Woods C., Lerendegui-Marco J., Lerner G., Martínez T., Masi A., Mastinu P., Mastromarco M., Matteucci F., Maugeri E. A., Mazzone A., Mendoza E., Michalopoulou V., Milazzo P. M., Murtas† F., Musacchio-Gonzalez E., Musumarra A., Negret A., Oprea A., Pérez-Maroto P., Patronis N., Pavón-Rodríguez J. A., Pellegriti M. G., Perkowski J., Petrone C., Piersanti L., Pirovano E., Pomp S., Porras I., Praena J., Protti N., Quesada J. M., Rauscher T., Reifarth R., Rochman D., Romanets Y., Romano F., Rubbia C., Sánchez A., Sabaté-Gilarte M., Schumann D., Sekhar A., Smith A. G., Sosnin N. V., Spelta M., Stamati M. E., Tagliente G., Tarifeño-Saldivia A., Tarrío D., Terranova N., Torres-Sánchez P., Urlass S., Valenta S., Variale V., Vaz P., Vescovi D., Vlachoudis V., Vlastou R., Wallner A., Woods P. J., Wright T., and Žugec P.

Subjects
Physics, QC1-999
Abstract

Capture and total cross section measurements for 94,95,96Mo have been performed at the neutron time-of-flight facilities, n_TOF at CERN and GELINA at JRC-Geel. The measurements were performed using isotopically enriched samples with an enrichment above 95% for each of the 94,95,96Mo isotopes. The capture measurements were performed at n_TOF using C6D6 detectors and a new sTED detector. The transmission measurements were performed at a 10 m station of GELINA using a 6Li glass neutron detector. Preliminary results of these measurements are presented.

Published
2023
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2. Neutron induced fission cross section measurements of 240Pu and 242Pu

Author

Belloni F., Eykens R., Heyse J., Matei C., Moens A., Nolte R., Plompen A.J.M., Richter S., Sibbens G., Vanleeuw D., and Wynants R.

Subjects
Physics, QC1-999
Abstract

Accurate neutron induced fission cross section of 240Pu and 242Pu are required in view of making nuclear technology safer and more efficient to meet the upcoming needs for the future generation of nuclear power plants (GEN-IV). The probability for a neutron to induce such reactions figures in the NEA Nuclear Data High Priority Request List [1]. A measurement campaign to determine neutron induced fission cross sections of 240Pu and 242Pu at 2.51 MeV and 14.83 MeV has been carried out at the 3.7 MV Van De Graaff linear accelerator at Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig. Two identical Frisch Grid fission chambers, housing back to back a 238U and a APu target (A = 240 or A = 242), were employed to detect the total fission yield. The targets were molecular plated on 0.25 mm aluminium foils kept at ground potential and the employed gas was P10. The neutron fluence was measured with the proton recoil telescope (T1), which is the German primary standard for neutron fluence measurements. The two measurements were related using a De Pangher long counter and the charge as monitors. The experimental results have an average uncertainty of 3–4% at 2.51 MeV and for 6–8% at 14.81 MeV and have been compared to the data available in literature.

Published
2017
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3. High-resolution cross section measurements for neutron interactions on 89Y with incident neutron energies up to 95 keV

Author

Tagliente, G., Milazzo, P. M., Paradela, C., Kopecky, S., Vescovi, D., Alaerts, G., Damone, L. A., Heyse, J., Krtička, M., Schillebeeckx, P., Mengoni, A., Wynants, R., Valenta, S., Aberle, O., Alcayne, V., Amaducci, S., Andrzejewski, J., Audouin, L., Babiano-Suarez, V., Bacak, M., Barbagallo, M., Bécares, V., Bečvář, F., Bellia, G., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A. S., Busso, M., Caamaño, M., Caballero, L., Calviani, M., Calviño, F., Cano-Ott, D., Casanovas, A., Cerutti, F., Chen, Y. H., Chiaveri, E., Colonna, N., Cortés, G. P., Cortés-Giraldo, M. A., Cosentino, L., Cristallo, S., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Durán, I., Eleme, Z., Fernández-Domíngez, B., Ferrari, A., Ferro-Gonçalves, I., Finocchiaro, P., Furman, V., Garg, R., Gawlik, A., Gilardoni, S., Glodariu, T., Göbel, K., González-Romero, E., Guerrero, C., Gunsing, F., Heinitz, S., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Kimura, A., Kivel, N., Kokkoris, M., Kopatch, Y., Kurtulgil, D., Ladarescu, I., Larsen, A. C., Lederer-Woods, C., Lerendegui-Marco, J., Lo Meo, S., Lonsdale, S. J., Lugaro, M., Macina, D., Manna, A., Martínez, T., Masi, A., Massimi, C., Mastinu, P. F., Mastromarco, M., Matteucci, F., Maugeri, E., Mazzone, A., Mendoza, E., Michalopoulou, V., Mingrone, F., Musumarra, A., Negret, A., Nolte, R., Ogállar, F., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Piersanti, L., Porras, I., Praena, J., Quesada, J. M., Radeck, D., Ramos Doval, D., Reifarth, R., Rochman, D., Rubbia, C., Sabaté-Gilarte, M., Saxena, A., Schumann, D., Smith, A. G., Spelta, M., Sosnin, N., Stamatopoulos, A., Tain, J. L., Talip, Z., Tarifeño-Saldivia, A. E., Tassan-Got, L., Torres-Sánchez, P., Tsinganis, A., Ulrich, J., Urlass, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Vlastou, R., Wallner, A., Woods, P. J., Wright, T. J., and Žugec, P.

Published
2024
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4. Neutron transmission and capture of 241Am

Author

Sage C., Gunsing F., Wynants R., Schillebeeckx P., Plompen A., Kopecky S., Lampoudis C., Bouland O., and Noguere G.

Subjects
Physics, QC1-999
Abstract

A set of neutron transmission and capture experiments based on the Time Of Flight (TOF) technique, were performed in order to determine the 241Am capture cross section in the energy range from 0.01 eV to 1 keV. The GELINA facility of the Institute for Reference Materials and Measurements (IRMM) served as the neutron source. A pair of C6D6 liquid scintillators was used to register the prompt gamma rays emerging from the americium sample, while a Li-glass detector was used in the transmission setup. Results from the capture and transmission data acquired are consistent with each other, but appear to be inconsistent with the evaluated data files. Resonance parameters have been derived for the data up to the energy of 100 eV.

Published
2013
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8. An absolute measurement of the neutron production rate of a spent nuclear fuel sample used for depletion code validation

Author

Schillebeeckx, Peter, primary, Verwerft, M., additional, Romojaro, P., additional, Žerovnik, G., additional, Messaoudi, N., additional, Alaerts, G., additional, Fiorito, L., additional, Govers, K., additional, Paepen, J., additional, Parthoens, Y., additional, Pedersen, B., additional, Stankovskiy, A., additional, Van den Eynde, G., additional, and Wynants, R., additional

Published
2023
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9. Neutron capture and total cross-section measurements on Mo-94'95'96 at n_TOF and GELINA

Author

Mucciola, R., Paradela, C., Manna, A., Alaerts, G., Massimi, C., Kopecky, S., Mengoni, A., Moens, A., Schillebeeckx, P., Wynants, R., Aberle, O., Alcayne, V., Altieri, S., Amaducci, S., Es-Sghir, H. Amar, Andrzejewski, J., Babiano-Suarez, V., Bacak, M., Balibrea, J., Bennett, S., Bernardes, A. P., Berthoumieux, E., Bosnar, D., Busso, M., Caamano, M., Calvino, F., Calviani, M., Cano-Ott, D., Casanovas, A., Castelluccio, D. M., Cerutti, F., Cescutti, G., Chasapoglou, S., Chiaveri, E., Colombetti, P., Colonna, N., Camprini, P. C. Console, Cortes, G., Cortes-Giraldo, M. A., Cosentino, L., Cristallo, S., Di Castro, M., Diacono, D., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Duran, I., Eleme, Z., Fargier, S., Fernandez-Dominguez, B., Finocchiaro, P., Fiore, S., Furman, V., Garcia-Infantes, F., Gawlik-Ramiega, A., Gervino, G., Gilardoni, S., Gonzalez-Romero, E., Guerrero, C., Gunsing, F., Gustavino, C., Heyse, J., Jenkins, D. G., Jericha, E., Junghans, A., Kadi, Y., Katabuchi, T., Knapova, I., Kokkoris, M., Kopatch, Y., Krticka, M., Kurtulgil, D., Ladarescu, I., Lederer-Woods, C., Lerendegui-Marco, J., Lerner, G., Martinez, T., Masi, A., Mastinu, P., Mastromarco, M., Matteucci, F., Maugeri, E. A., Mazzone, A., Mendoza, E., Michalopoulou, V., Milazzo, P. M., Murtas, F., Musacchio-Gonzalez, E., Musumarra, A., Negret, A., Oprea, A., Perez-Maroto, P., Patronis, N., Pavon-Rodriguez, J. A., Pellegriti, M. G., Perkowski, J., Petrone, C., Piersanti, L., Pirovano, E., Pomp, Stephan, Porras, I., Praena, J., Protti, N., Quesada, J. M., Rauscher, T., Reifarth, R., Rochman, D., Romanets, Y., Romano, F., Rubbia, C., Sanchez, A., Sabate-Gilarte, M., Schumann, D., Sekhar, A., Smith, A. G., Sosnin, N. V., Spelta, M., Stamati, M. E., Tagliente, G., Tarifeno-Saldivia, A., Tarrío, Diego, Terranova, N., Torres-Sanchez, P., Urlass, S., Valenta, S., Variale, V., Vaz, P., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Woods, P. J., Wright, T., Zugec, P., Mucciola, R., Paradela, C., Manna, A., Alaerts, G., Massimi, C., Kopecky, S., Mengoni, A., Moens, A., Schillebeeckx, P., Wynants, R., Aberle, O., Alcayne, V., Altieri, S., Amaducci, S., Es-Sghir, H. Amar, Andrzejewski, J., Babiano-Suarez, V., Bacak, M., Balibrea, J., Bennett, S., Bernardes, A. P., Berthoumieux, E., Bosnar, D., Busso, M., Caamano, M., Calvino, F., Calviani, M., Cano-Ott, D., Casanovas, A., Castelluccio, D. M., Cerutti, F., Cescutti, G., Chasapoglou, S., Chiaveri, E., Colombetti, P., Colonna, N., Camprini, P. C. Console, Cortes, G., Cortes-Giraldo, M. A., Cosentino, L., Cristallo, S., Di Castro, M., Diacono, D., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Duran, I., Eleme, Z., Fargier, S., Fernandez-Dominguez, B., Finocchiaro, P., Fiore, S., Furman, V., Garcia-Infantes, F., Gawlik-Ramiega, A., Gervino, G., Gilardoni, S., Gonzalez-Romero, E., Guerrero, C., Gunsing, F., Gustavino, C., Heyse, J., Jenkins, D. G., Jericha, E., Junghans, A., Kadi, Y., Katabuchi, T., Knapova, I., Kokkoris, M., Kopatch, Y., Krticka, M., Kurtulgil, D., Ladarescu, I., Lederer-Woods, C., Lerendegui-Marco, J., Lerner, G., Martinez, T., Masi, A., Mastinu, P., Mastromarco, M., Matteucci, F., Maugeri, E. A., Mazzone, A., Mendoza, E., Michalopoulou, V., Milazzo, P. M., Murtas, F., Musacchio-Gonzalez, E., Musumarra, A., Negret, A., Oprea, A., Perez-Maroto, P., Patronis, N., Pavon-Rodriguez, J. A., Pellegriti, M. G., Perkowski, J., Petrone, C., Piersanti, L., Pirovano, E., Pomp, Stephan, Porras, I., Praena, J., Protti, N., Quesada, J. M., Rauscher, T., Reifarth, R., Rochman, D., Romanets, Y., Romano, F., Rubbia, C., Sanchez, A., Sabate-Gilarte, M., Schumann, D., Sekhar, A., Smith, A. G., Sosnin, N. V., Spelta, M., Stamati, M. E., Tagliente, G., Tarifeno-Saldivia, A., Tarrío, Diego, Terranova, N., Torres-Sanchez, P., Urlass, S., Valenta, S., Variale, V., Vaz, P., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Woods, P. J., Wright, T., and Zugec, P.

Abstract

Capture and total cross section measurements for 94'95'96 MO have been performed at the neutron time -of-flight facilities, n_TOF at CERN and GELINA at JRC-Geel. The measurements were performed using isotopically enriched samples with an enrichment above 95% for each of the (94'95'96)M0 isotopes. The capture measurements were performed at n_TOF using C6D6 detectors and a new sTED detector. The transmission measurements were performed at a 10 m station of GELINA using a Li-6 glass neutron detector. Preliminary results of these measurements are presented.

Published
2023
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10. Neutron capture and total cross-section measurements on 94,95,96Mo at n_TOF and GELINA.

Author

Mucciola, R., Paradela, C., Manna, A., Alaerts, G., Massimi, C., Kopecky, S., Mengoni, A., Moens, A., Schillebeeckx, P., Wynants, R., Aberle, O., Alcayne, V., Altieri, S., Amaducci, S., Amar Es-Sghir, H., Andrzejewski, J., Babiano-Suarez, V., Bacak, M., Balibrea, J., and Bennett, S.

Subjects
NUCLEAR cross sections, NEUTRON capture, TIME-of-flight mass spectrometry, MOLYBDENUM isotopes, NEUTRON counters
Abstract

Capture and total cross section measurements for 94,95,96Mo have been performed at the neutron time-of-flight facilities, n_TOF at CERN and GELINA at JRC-Geel. The measurements were performed using isotopically enriched samples with an enrichment above 95% for each of the 94,95,96Mo isotopes. The capture measurements were performed at n_TOF using C6D6 detectors and a new sTED detector. The transmission measurements were performed at a 10 m station of GELINA using a 6Li glass neutron detector. Preliminary results of these measurements are presented. [ABSTRACT FROM AUTHOR]

Published
2023
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13. Zr 92 (n,g) and (n,tot) measurements at the GELINA and n_TOF facilities

Author

Tagliente G., Kopecky S., Heyse J., Krticka M., Massimi C., Mengoni A., Milazzo P. M., Plompen A. J. M., Schillebeeckx P., Valenta S., Wynants R., Altstadt S., Andrzejewski J., Audouin L., Becares V., Barbagallo M., Becvar F., Belloni F., Berthoumieux E., Billowes J., Boccone V., Bosnar D., Brugger M., Calvino F., Calviani M., Cano-Ott D., Carrapico C., Cerutti F., Chiaveri E., Chin M., Colonna N., Cortes G., Cortes-Giraldo M. A., Cristallo S., Diakaki M., Domingo-Pardo C., Dressler R., Duran I., Eleftheriadis C., Ferrari A., Fraval K., Furman V., Gobel K., Gomez-Hornillos M. B., Ganesan S., Garcia A. R., Giubrone G., Goncalves I. F., Gonzalez-Romero E., Goverdovski A., Griesmayer E., Guerrero C., Gunsing F., Heftrich T., Hernandez-Prieto A., Jericha E., Kappeler F., Kadi Y., Karadimos D., Katabuchi T., Ketlerov V., Khryachkov V., Kivel N., Kokkoris M., Kroll J., Lampoudis C., Langer C., Leal-Cidoncha E., Lederer C., Leeb H., Leong L. S., Losito R., Lugaro M., Mallick A., Manousos A., Marganiec J., Martinez T., Mastinu P., Mastromarco M., Mendoza E., Mingrone F., Mirea M., Paradela C., Pavlik A., Perkowski J., Praena J., Quesada J. M., Rauscher T., Reifarth R., Riego-Perez A., Robles M., Rubbia C., Ryan J. A., Sabate-Gilarte M., Sarmento R., Saxena A., Schmidt S., Schumann D., Sedyshev P., Tain J. L., Tarifeno-Saldivia A., Tarrio D., Tassan-Got L., Tsinganis A., Vannini G., Variale V., Vaz P., Ventura A., Vermeulen M. J., Vescovi D., Vlachoudis V., Vlastou R., Wallner A., Ware T., Weigand M., Weiss C., Wright T., Zugec P., Tagliente G., Kopecky S., Heyse J., Krticka M., Massimi C., Mengoni A., Milazzo P.M., Plompen A.J.M., Schillebeeckx P., Valenta S., Wynants R., Altstadt S., Andrzejewski J., Audouin L., Becares V., Barbagallo M., Becvar F., Belloni F., Berthoumieux E., Billowes J., Boccone V., Bosnar D., Brugger M., Calvino F., Calviani M., Cano-Ott D., Carrapico C., Cerutti F., Chiaveri E., Chin M., Colonna N., Cortes G., Cortes-Giraldo M.A., Cristallo S., Diakaki M., Domingo-Pardo C., Dressler R., Duran I., Eleftheriadis C., Ferrari A., Fraval K., Furman V., Gobel K., Gomez-Hornillos M.B., Ganesan S., Garcia A.R., Giubrone G., Goncalves I.F., Gonzalez-Romero E., Goverdovski A., Griesmayer E., Guerrero C., Gunsing F., Heftrich T., Hernandez-Prieto A., Jericha E., Kappeler F., Kadi Y., Karadimos D., Katabuchi T., Ketlerov V., Khryachkov V., Kivel N., Kokkoris M., Kroll J., Lampoudis C., Langer C., Leal-Cidoncha E., Lederer C., Leeb H., Leong L.S., Losito R., Lugaro M., Mallick A., Manousos A., Marganiec J., Martinez T., Mastinu P., Mastromarco M., Mendoza E., Mingrone F., Mirea M., Paradela C., Pavlik A., Perkowski J., Praena J., Quesada J.M., Rauscher T., Reifarth R., Riego-Perez A., Robles M., Rubbia C., Ryan J.A., Sabate-Gilarte M., Sarmento R., Saxena A., Schmidt S., Schumann D., Sedyshev P., Tain J.L., Tarifeno-Saldivia A., Tarrio D., Tassan-Got L., Tsinganis A., Vannini G., Variale V., Vaz P., Ventura A., Vermeulen M.J., Vescovi D., Vlachoudis V., Vlastou R., Wallner A., Ware T., Weigand M., Weiss C., Wright T., and Zugec P.

Subjects
n_TOF, s process, Zr
Published
2022

16. $^{92}$Zr($n,\gamma$) and ($n$,tot) measurements at the GELINA and n_TOF facilities

Author

Tagliente, G., Kopecky, S., Heyse, J., Krtička, M., Massimi, C., Mengoni, A., Milazzo, P.M., Plompen, A.J.M., Schillebeeckx, P., Valenta, S., Wynants, R., Altstadt, S., Andrzejewski, J., Audouin, L., Bécares, V., Barbagallo, M., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviño, F., Calviani, M., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Cristallo, S., Diakaki, M., Domingo-Pardo, C., Dressler, R., Durán, I., Eleftheriadis, C., Ferrari, A., Fraval, K., Furman, V., Göbel, K., Gómez-Hornillos, M.B., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Gunsing, F., Heftrich, T., Hernández-Prieto, A., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Katabuchi, T., Ketlerov, V., Khryachkov, V., Kivel, N., Kokkoris, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Losito, R., Lugaro, M., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P., Mastromarco, M., Mendoza, E., Mingrone, F., Mirea, M., Paradela, C., Pavlik, A., Perkowski, J., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego-Perez, A., Tallaj, Amélie, Rubbia, C., Ryan, J.A., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schmidt, S., Schumann, D., Sedyshev, P., Tain, J.L., Tarifeño-Saldivia, A., Tarrío, D., Tassan-Got, L., Tsinganis, A., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiss, C., Wright, T., Žugec, P., Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and n_TOF

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

International audience; Background: Stellar nucleosynthesis of elements heavier than iron is driven by neutron capture processes. 92Zris positioned at a strategic point along the slow nucleosynthesis path, given its proximity to the neutron magicnumber N = 50 and its position at the matching region between the weak and main slow processes.Purpose: In parallel with recent improved astronomical data, the extraction of accurate Maxwellian averagedcross sections (MACSs) derived from a more complete and accurate set of resonance parameters should allowfor a better understanding of the stellar conditions at which nucleosynthesis takes place.Methods: Transmission and capture cross section measurements using enriched 92Zr metallic samples wereperformed at the time-of flight facilities GELINA of JRC-Geel (BE) and n_TOF of CERN (CH). The neutronbeam passing through the samples was investigated in transmission measurements at GELINA using a Li-glassscintillator. The γ rays emitted during the neutron capture reactions were detected by C6D6 detectors at bothGELINA and n_TOF.Results: Resonance parameters of individual resonances up to 81 keV were extracted from a combined resonanceshape analysis of experimental transmissions and capture yields. For the majority of the resonances the paritywas determined from an analysis of the transmission data obtained with different sample thicknesses. Averageresonance parameters were calculated.Conclusions: Maxwellian averaged cross sections were extracted from resonances observed up to 81 keV. TheMACS for kT = 30 keV is fully consistent with experimental data reported in the literature. The MACSs forkT 15 keV are in good agreement with those derived from the ENDF/B-VIII.0 library and recommendedin the KADONIS database. For kT higher than 30 keV differences are observed. A comparison with MACSsobtained with the cross sections recommended in the JEFF-3.3 and JENDL-4.0 libraries shows discrepancieseven for kT 15 keV.

Published
2022

17. $^{92}$Zr (n,y) and (n,tot) measurements at the GELINA and n_TOF facilities

Author

n_TOF Collaboration, Tagliente, G., Kopecky, S., Heyse, J., Krticka, M., Massimi, C., Mengoni, A., Milazzo, P. M., Plompen, A. J. M., Schillebeeckx, P., Valenta, S., Wynants, R., Altstadt, S., Andrzejewski, J., Audouin, L., Bécares, V., Barbagallo, M., Becvár, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviño, F., Calviani, M., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M. A., Cristallo, S., Diakaki, M., Domingo-Pardo, C., Dressler, R., Durán, I., Eleftheriadis, C., Ferrari, A., Fraval, K., Furman, V., Göbel, K., Gómez-Hornillos, M. B., Ganesan, S., García, A. R., Giubrone, G., Gonçalves, I. F., González-Romero, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Gunsing, F., Heftrich, T., Hernández-Prieto, A., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Katabuchi, T., Ketlerov, V., Khryachkov, V., Kivel, N., Kokkoris, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Lugaro, M., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P., Mastromarco, M., Mendoza, E., Mingrone, F., Mirea, M., Paradela, C., Pavlik, A., Perkowski, J., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego-Perez, A., Robles, M., Rubbia, C., Ryan, J. A., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schmidt, S., Schumann, D., Sedyshev, P., Tain, J. L., Tarifeño-Saldivia, A., Tarrío, D., Tassan-Got, L., Tsinganis, A., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeulen, M. J., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiss, C., Wright, T., and Žugec, P.

Subjects
Physics, Astrophysics::High Energy Astrophysical Phenomena, ddc:530
Abstract

Background: Stellar nucleosynthesis of elements heavier than iron is driven by neutron capture processes. $^{92}$ is positioned at a strategic point along the slow nucleosynthesis path, given its proximity to the neutron magic number N=50 and its position at the matching region between the weak and main slow processes. Purpose: In parallel with recent improved astronomical data, the extraction of accurate Maxwellian averaged cross sections (MACSs) derived from a more complete and accurate set of resonance parameters should allow for a better understanding of the stellar conditions at which nucleosynthesis takes place. Methods: Transmission and capture cross section measurements using enriched $^{92}$Zr metallic samples were performed at the time-of flight facilities GELINA of JRC-Geel (BE) and n_TOF of CERN (CH). The neutron beam passing through the samples was investigated in transmission measurements at GELINA using a Li-glass scintillator. The γ rays emitted during the neutron capture reactions were detected by C$_{6}$D$_{6}$ detectors at both GELINA and n_TOF. Results: Resonance parameters of individual resonances up to 81 keV were extracted from a combined resonance shape analysis of experimental transmissions and capture yields. For the majority of the resonances the parity was determined from an analysis of the transmission data obtained with different sample thicknesses. Average resonance parameters were calculated. Conclusions: Maxwellian averaged cross sections were extracted from resonances observed up to 81 keV. The MACS for kT=30keV is fully consistent with experimental data reported in the literature. The MACSs for kT≲15keV are in good agreement with those derived from the ENDF/B-VIII.0 library and recommended in the KADoNiS database. For kT higher than 30 keV differences are observed. A comparison with MACSs obtained with the cross sections recommended in the JEFF-3.3 and JENDL 4.0 libraries shows discrepancies even for kT≲15keV.

Published
2022
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18. Zr-92(n, gamma) and (n,tot) measurements at the GELINA and n_TOF facilities

Author

Tagliente, G., Kopecky, S., Heyse, J., Massimi, C., Mengoni, A., Milazzo, P. M., Plompen, A. J. M., Schillebeeckx, P., Valenta, S., Wynants, R., Altstadt, S., Andrzejewski, J., Audouin, L., Becares, V., Barbagallo, M., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calvino, F., Calviani, M., Cano-Ott, D., Carrapico, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortes, G., Cortes-Giraldo, M. A., Cristallo, S., Diakaki, M., Domingo-Pardo, C., Dressler, R., Duran, I., Eleftheriadis, C., Ferrari, A., Fraval, K., Furman, V., Göbel, K., Gomez-Hornillos, M. B., Ganesan, S., Garcia, A. R., Giubrone, G., Goncalves, I. F., Gonzalez-Romero, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Gunsing, F., Heftrich, T., Hernandez-Prieto, A., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Katabuchi, T., Ketlerov, V., Khryachkov, V., Kivel, N., Kokkoris, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Lugaro, M., Mallick, A., Manousos, A., Marganiec, J., Martinez, T., Mastinu, P., Mastromarco, M., Mendoza, E., Mingrone, F., Mirea, M., Paradela, C., Pavlik, A., Perkowski, J., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego-Perez, A., Robles, M., Rubbia, C., Ryan, J. A., Sabate-Gilarte, M., Sarmento, R., Saxena, A., Schmidt, S., Schumann, D., Sedyshev, P., Tain, J. L., Tarifeno-Saldivia, A., Tarrio, D., Tassan-Got, L., Tsinganis, A., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeulen, M. J., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiss, C., Wright, T., Zugec, P., and Krtička, M.

Abstract

Background: Stellar nucleosynthesis of elements heavier than iron is driven by neutron capture processes. 92Zr is positioned at a strategic point along the slow nucleosynthesis path, given its proximity to the neutron magic number N=50 and its position at the matching region between the weak and main slow processes. Purpose: In parallel with recent improved astronomical data, the extraction of accurate Maxwellian averaged cross sections (MACSs) derived from a more complete and accurate set of resonance parameters should allow for a better understanding of the stellar conditions at which nucleosynthesis takes place. Methods: Transmission and capture cross section measurements using enriched 92Zr metallic samples were performed at the time-of flight facilities GELINA of JRC-Geel (BE) and n_TOF of CERN (CH). The neutron beam passing through the samples was investigated in transmission measurements at GELINA using a Li-glass scintillator. The γ rays emitted during the neutron capture reactions were detected by C6D6 detectors at both GELINA and n_TOF. Results: Resonance parameters of individual resonances up to 81 keV were extracted from a combined resonance shape analysis of experimental transmissions and capture yields. For the majority of the resonances the parity was determined from an analysis of the transmission data obtained with different sample thicknesses. Average resonance parameters were calculated. Conclusions: Maxwellian averaged cross sections were extracted from resonances observed up to 81 keV. The MACS for kT=30keV is fully consistent with experimental data reported in the literature. The MACSs for kT≲15keV are in good agreement with those derived from the ENDF/B-VIII.0 library and recommended in the KADoNiS database. For kT higher than 30 keV differences are observed. A comparison with MACSs obtained with the cross sections recommended in the JEFF-3.3 and JENDL-4.0 libraries shows discrepancies even for kT≲15keV.

Published
2022

19. Measurement of $^{238}\mathrm{U}(n,{n}^{{'}}{\gamma}$) cross section data and their impact on reaction models

Author

Kerveno, M., Dupuis, M., Bacquias, A., Belloni, F., Bernard, D., Borcea, C., Boromiza, M., Capote, R., De Saint Jean, C., Dessagne, P., Drohé, J., Henning, G., Hilaire, S., Kawano, T., Leconte, P., Nankov, N., Negret, A., Nyman, M., Olacel, A., Plompen, A., Romain, P., Rouki, C., Rudolf, G., Stanoiu, M., Wynants, R., Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Détection et de Géophysique (CEA) (LDG), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Commission - Joint Research Centre [Geel] (JRC), Horia Hulubei National Institute for Physics and Nuclear Engineering, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Matière sous Conditions Extrêmes (LMCE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire d'Etudes de PHysique (LEPH), Service de Physique des Réacteurs et du Cycle (SPRC), Département Etude des Réacteurs (DER), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Etude des Réacteurs (DER), International Atomic Energy Agency [Vienna] (IAEA), Los Alamos National Laboratory (LANL), European Project: 34186,EFNUDAT, European Project: 211499,EC:FP7:Fission,FP7-Fission-2007,EUFRAT(2008), European Project: 249671,EC:FP7:Fission,FP7-Fission-2009,ANDES(2010), European Project: 605203,EC:FP7:Fission,FP7-Fission-2013,CHANDA(2013), European Project: 847552,SANDA, and European Project: 516487,NUDAME

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

International audience; A better knowledge of ($n,xn$) reaction cross sections is important for both reaction modeling and energy applications. This article focuses on inelastic scattering of neutrons off $^{238}$U for which improvements are needed to better constrain evaluations and solve inconsistencies in nuclear power reactor calculations. A new precise measurement of ($n,xn\gamma$) reaction cross sections on $^{238}$U has been performed at the GELINA (Geel Electron LINear Accelerator) neutron facility operated by EC-JRC-Geel (Belgium) with the GRAPhEME (GeRmanium array for Actinides PrEcise MEasurements) setup. The prompt $\gamma$-ray spectroscopy method coupled to time-of-flight measurements is used to extract ($n,xn\gamma$) cross section values which can be further combined to infer the total neutron inelastic scattering cross section. Cross section data for 18 $\gamma$ transitions (five never measured before) are presented and compared to the data in the literature. Emphasis is especially given to the uncertainty determination to produce partial cross section data as accurate as possible. Due to intrinsic limitations of the experimental method, the use of additional nuclear structure information coupled with theoretical modeling is required to determine the total ($n,n′$) cross section over the whole neutron energy range. We have investigated modeling aspects of the $^{238}$U($n,n$'$\gamma$) cross sections related to the description of compound nucleus and preequilibirum mechanisms as well as the discrete part of nuclear structure. Through comparison between experimental and calculated ($n,n$'$\gamma$) cross sections, we pinpoint inaccuracies in the description of specific reaction mechanisms and challenge recently implemented models. This helps improving the whole modeling of the ($n,n′$) reaction.

Published
2021

25. Measurement of U238(n,n′γ ) cross section data and their impact on reaction models

Author

Kerveno, M., primary, Dupuis, M., additional, Bacquias, A., additional, Belloni, F., additional, Bernard, D., additional, Borcea, C., additional, Boromiza, M., additional, Capote, R., additional, De Saint Jean, C., additional, Dessagne, P., additional, Drohé, J. C., additional, Henning, G., additional, Hilaire, S., additional, Kawano, T., additional, Leconte, P., additional, Nankov, N., additional, Negret, A., additional, Nyman, M., additional, Olacel, A., additional, Plompen, A. J. M., additional, Romain, P., additional, Rouki, C., additional, Rudolf, G., additional, Stanoiu, M., additional, and Wynants, R., additional

Published
2021
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28. Measurement of the 154Gd(n,γ) cross section and its astrophysical implications

Author

Mazzone, A., Cristallo, S., Aberle, O., Alaerts, G., Alcayne, V., Amaducci, S., Andrzejewski, J., Audouin, L., Babiano-Suarez, V., Bacak, M., Barbagallo, M., Bécares, V., Bečvář, F., Bellia, G., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A.S., Busso, M., Caamaño, M., Caballero, L., Calviani, M., Calviño, F., Cano-Ott, D., Casanovas, A., Castelluccio, D.M., Cerutti, F., Chen, Y.H., Chiaveri, E., Clai, G., Colonna, N., Cortés, G.P., Cortés-Giraldo, M.A., Cosentino, L., Damone, L.A., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Durán, I., Eleme, Z., Fernández-Domíngez, B., Ferrari, A., Ferro-Gonçalves, I., Finocchiaro, P., Furman, V., Garg, R., Gawlik, A., Gilardoni, S., Glodariu, T., Göbel, K., González-Romero, E., Guerrero, C., Gunsing, F., Heinitz, S., Heyse, J., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Kimura, A., Kivel, N., Kokkoris, M., Kopatch, Y., Kopecky, S., Krtička, M., Kurtulgil, D., Ladarescu, I., Lederer-Woods, C., Lerendegui-Marco, J., Lo Meo, S., Lonsdale, S.-J., Macina, D., Manna, A., Martínez, T., Masi, A., Massimi, C., Mastinu, P.F., Mastromarco, M., Matteucci, F., Maugeri, E., Mendoza, E., Mengoni, A., Michalopoulou, V., Milazzo, P.M., Mingrone, F., Mucciola, R., Musumarra, A., Negret, A., Nolte, R., Ogállar, F., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Piersanti, L., Porras, I., Praena, J., Quesada, J.M., Radeck, D., Ramos Doval, D., Reifarth, R., Rochman, D., Rubbia, C., Sabaté-Gilarte, M., Saxena, A., Schillebeeckx, P., Schumann, D., Smith, A.G., Sosnin, N., Stamatopoulos, A., Tagliente, G., Tain, J.L., Talip, Z., Tarifeño-Saldivia, A.E., Tassan-Got, L., Torres-Sánchez, P., Tsinganis, A., Ulrich, J., Urlass, S., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Woods, P.J., Wynants, R., Wright, T.J., and Žugec, P.

Published
2020
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30. Measurement of the Gd(n, ) Cross Section and its Astrophysical Implications

Author

Mazzone, A., Cristallo, S., Aberle, O., Alaerts, G., Alcayne, V., Amaducci, S., Andrzejewski, J., Audouin, L., Babiano-Suarez, V., Bacak, M., Barbagallo, M., Bécares, V., Bečvář, F., Bellia, G., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A.S., Busso, M., Caamaño, M., Caballero, L., Calviani, M., Calviño, F., Cano-Ott, D., Casanovas, A., Castelluccio, D.M., Cerutti, F., Chen, Y.H., Chiaveri, E., Clai, G., Colonna, N., Cortés, G.P., Cortés-Giraldo, M.A., Cosentino, L., Damone, L.A., Diakaki, M., Dietz, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Durán, I., Eleme, Z., Fernández-Domíngez, B., Ferrari, A., Ferro-Gonçalves, I., Finocchiaro, P., Furman, V., Garg, R., Gawlik, A., Gilardoni, S., Glodariu, T., Göbel, K., González-Romero, E., Guerrero, C., Gunsing, F., Heinitz, S., Heyse, J., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Kimura, A., Kivel, N., Kokkoris, M., Kopatch, Y., Kopecky, S., Krtička, M., Kurtulgil, D., Ladarescu, I., Lederer-Woods, C., Lerendegui-Marco, J., Lo Meo, S., Lonsdale, S.J., Macina, D., Manna, A., Martínez, T., Masi, A., Massimi, C., Mastinu, P.F., Mastromarco, M., Matteucci, F., Maugeri, E., Mendoza, E., Mengoni, A., Michalopoulou, V., Milazzo, P.M., Mingrone, F., Mucciola, R., Musumarra, A., Negret, A., Nolte, R., Ogállar, F., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Piersanti, L., Porras, I., Praena, J., Quesada, J.M., Radeck, D., Ramos Doval, D., Reifarth, R., Rochman, D., Rubbia, C., Sabaté-Gilarte, M., Saxena, A., Schillebeeckx, P., Schumann, D., Smith, A.G., Sosnin, N., Stamatopoulos, A., Tagliente, G., Tain, J.L., Talip, Z., Tarifeño-Saldivia, A.E., Tassan-Got, L., Torres-Sánchez, P., Tsinganis, A., Ulrich, J., Urlass, S., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vescovi, D., Vlachoudis, V., Vlastou, R., Wallner, A., Woods, P.J., Wynants, R., Wright, T.J., and Žugec, P.

Abstract

The neutron capture cross section of $^{154}$Gd was measured from 1 eV to 300 keV in the experimental area located 185 m from the CERN n_TOF neutron spallation source, using a metallic sample of gadolinium, enriched to 67% in $^{154}$Gd. The capture measurement, performed with four C$_{6}$D$_{6}$ scintillation detectors, has been complemented by a transmission measurement performed at the GELINA time-of-flight facility (JRC-Geel), thus minimising the uncertainty related to sample composition. An accurate Maxwellian averaged capture cross section (MACS) was deduced over the temperature range of interest for s process nucleosynthesis modelling. We report a value of 880(50) mb for the MACS at kT=30 keV, significantly lower compared to values available in literature. The new adopted $^{154}$Gd(n,γ) cross section reduces the discrepancy between observed and calculated solar s-only isotopic abundances predicted by s-process nucleosynthesis models.

Published
2020

32. Erratum to: Cross section measurements of 155, 157Gd(n, γ) induced by thermal and epithermal neutrons (The European Physical Journal A, (2019), 55, 1, (9), 10.1140/epja/i2019-12692-7)

Author

Mastromarco, M., Manna, A., Aberle, O., Andrzejewski, J., Audouin, L., Bacak, M., Balibrea, J., Barbagallo, M., Becvar, F., Berthoumieux, E., Billowes, J., Bosnar, D., Brown, A., Caamano, M., Calvino, F., Calviani, M., Cano-Ott, D., Cardella, R., Casanovas, A., Castelluccio, D. M., Cerutti, F., Chen, Y. H., Chiaveri, E., Clai, G., Colonna, N., Cortes, G., Cortes-Giraldo, M. A., Cosentino, L., Damone, L. A., Diakaki, M., Domingo-Pardo, C., Dressler, R., Dupont, E., Duran, I., Fernandez-Dominguez, B., Ferrari, A., Ferreira, P., Finocchiaro, P., Furman, V., Gobel, K., Garcia, A. R., Gawlik, A., Gilardoni, S., Glodariu, T., Goncalves, I. F., Gonzalez-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Guglielmelli, A., Harada, H., Heinitz, S., Heyse, J., Jenkins, D. G., Jericha, E., Kappeler, F., Kadi, Y., Kalamara, A., Kavrigin, P., Kimura, A., Kivel, N., Knapova, I., Kokkoris, M., Krticka, M., Kurtulgil, D., Leal-Cidoncha, E., Lederer, C., Leeb, H., Lerendegui-Marco, J., Lonsdale, S. J., Macina, D., Marganiec, J., Martinez, T., Masi, A., Massimi, C., Mastinu, P., Maugeri, E. A., Mazzone, A., Mendoza, E., Mengoni, A., Milazzo, P. M., Mingrone, F., Musumarra, A., Negret, A., Nolte, R., Oprea, A., Patronis, N., Pavlik, A., Perkowski, J., Porras, I., Praena, J., Quesada, J. M., Radeck, D., Rauscher, T., Reifarth, R., Rocchi, F., Rubbia, C., Ryan, J. A., Sabate-Gilarte, M., Saxena, A., Schillebeeckx, P., Schumann, D., Sedyshev, P., Smith, A. G., Sosnin, N. V., Stamatopoulos, A., Tagliente, G., Tain, J. L., Tarifeno-Saldivia, A., Tassan-Got, L., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Vlastou, R., Wallner, A., Warren, S., Weiss, C., Wynants, R., Woods, P. J., Wright, T., and Zugec, P.

Published
2019

33. Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α,n)25Mg

Author

Massimi, C., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bisterzo, S., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Castelluccio, D.M., Cerutti, F., Chiaveri, E., Cosentino, L., Chin, M., Clai, G., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Cristallo, S., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Finocchiaro, P., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Kopecky, S., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Lo Meo, S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P.F., Mastromarco, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondelaers, W., Musumarra, A., Paradela, C., Pavlik, A., Perkowski, J., Pignatari, M., Piersanti, L., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Robles, M.S., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Van Rijs, I., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wynants, R., Wright, T., and Žugec, P.

Published
2017
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34. Neutron spectroscopy of ²⁶Mg states: Constraining the stellar neutron source ²²Ne(α,n)²⁵Mg

Author

Massimi, C., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Bisterzo, S., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Castelluccio, D.M., Cerutti, F., Chiaveri, E., Cosentino, L., Chin, M., Clai, G., Colonna, N., Cortés, G., Cortés-Giraldo, M.A., Cristallo, S., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Eleftheriadis, C., Ferrari, A., Finocchiaro, P., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gonçalves, I.F., González-Romero, E., Griesmayer, E., Guerrero, C., Gunsing, F., Hernández-Prieto, A., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Kopecky, S., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L.S., Lo Meo, S., Losito, R., Mallick, A., Manousos, A., Marganiec, J., Martínez, T., Mastinu, P.F., Mastromarco, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondelaers, W., Musumarra, A., Paradela, C., Pavlik, A., Perkowski, J., Pignatari, M., Piersanti, L., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Robles, M.S., Rubbia, C., Sabaté-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Tagliente, G., Tain, J.L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Valenta, S., Vannini, G., Van Rijs, I., Variale, V., Vaz, P., Ventura, A., Vermeulen, M.J., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wynants, R., Wright, T., and Žugec, P.

Subjects
α+²², s Process, Ne, Physics, Neutron spectroscopy, ddc:530
Abstract

This work reports on accurate, high-resolution measurements of the 25Mg(n,γ)26Mg and 25Mg(n,tot) cross sections in the neutron energy range from thermal to about 300 keV, leading to a significantly improved 25Mg(n,γ)26Mg parametrization. The relevant resonances for n+25Mg were characterized from a combined R-matrix analysis of the experimental data. This resulted in an unambiguous spin/parity assignment of the corresponding excited states in 26Mg. With this information experimental upper limits of the reaction rates for 22Ne(α,n)25Mg and 22Ne(α,γ)26Mg were established, potentially leading to a significantly higher (α,n)/(α,γ) ratio than previously evaluated. The impact of these results has been studied for stellar models in the mass range 2 to 25 M⊙ .

Published
2017

37. A detector system for neutron resonance capture imaging

Author

Perelli Cippo, E, Borella, A, Kockelmann, W, Pietropaolo, A, Postma, H, Rhodes, NJ, Schillebeeckx, P, Schooneveld, EM, Tardocchi, M, Wynants, R, The ANCIENT CHARM collaboration, GORINI, GIUSEPPE, Perelli Cippo, E, Borella, A, Gorini, G, Kockelmann, W, Pietropaolo, A, Postma, H, Rhodes, N, Schillebeeckx, P, Schooneveld, E, Tardocchi, M, Wynants, R, and The ANCIENT CHARM, C

Subjects
Physics, Nuclear and High Energy Physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Neutron resonance, imaging, Neutron radiation, Spectral line, Nuclear physics, Time of flight, neutron, resonance capture, FIS/01 - FISICA SPERIMENTALE, Neutron detection, Neutron, Spallation, Nuclear Experiment, Instrumentation
Abstract

Neutron resonance capture analysis (NRCA) is used in the Ancient Charm project to determine element concentrations in cultural heritage objects. NRCA employs gamma-ray detectors to determine time-of-flight spectra that reveal the resonance structure in neutron induced reaction cross sections. One of the objectives is to produce a high-detection efficient NRCA system capable of mapping element distributions. The detection system is described together with the results of neutron beam tests at the time-of-flight facility GELINA and at the pulsed neutron spallation source ISIS (UK). © 2010 Elsevier B.V. All rights reserved.

Published
2010

38. Neutron capture cross section measurements for 197Au from 4 to 80 keV at GELINA

Author

Massimi, C., Becker, B., Dupont, E., Kopecky, S., Lampoudis, C., Massarczyk, R., Moxon, M., Pronyaev, V., Schillebeeckx, P., Sirakov, I., Volev, K., and Wynants, R.

Subjects
neutron resonances, Astrophysics::High Energy Astrophysical Phenomena, neutron capture, neutron cross section
Abstract

Neutron induced capture cross section measurements for 197Au have been performed in the energy region between 4 keV and 80 keV. The experiments have been carried out at the time-of-flight facility GELINA. The prompt capture gamma-rays were detected by two C6D6 liquid scintillators, placed at 12.5 m distance from the neutron source. The shape of the neutron flux was measured with a 10B-loaded double Frisch-gridded ionization chamber based on the 10B(n,alpha) reaction. The total energy detection principle in combination with the pulse height weighting technique was applied. The data have been normalized to the well-isolated and saturated 197Au resonance at 4.9 eV. Special procedures have been applied to reduce bias effects due to the weighting function, normalization, dead time and background corrections. Uncertainties due to normalization, neutron flux and weighting function are 1.0 %. An additional uncertainty of 0.5 % results from the correction for self-shielding and multiple interactions, which have been verified by experiment. Resonance fluctuations have been studied by additional measurements at a 30 m flight path station. The results reported in this work deviate systematically by more than 5% from the cross section that is recommended as a reference for astrophysical applications. They are about 2% lower compared to a standard evaluation of the 197Au(n,gamma) cross section that was based on a least squares fit of experimental data available in the literature prior to this work and are fully consistent with the latest average capture cross section obtained in a quasi-Maxwellian spectrum at 25 keV.

Published
2014

39. Neutron induced fission cross section measurements of 240Pu and 242Pu.

Author

Belloni, F., Eykens, R., Heyse, J., Matei, C., Moens, A., Nolte, R., Plompen, A. J. M., Richter, S., Sibbens, G., Vanleeuw, D., and Wynants, R.

Subjects
FISSION cross sections, NEUTRONS, PLUTONIUM, NUCLEAR fission, NUCLEAR power plants, VAN de Graaff generator
Abstract

Accurate neutron induced fission cross section of 240Pu and 242Pu are required in view of making nuclear technology safer and more efficient to meet the upcoming needs for the future generation of nuclear power plants (GEN-IV). The probability for a neutron to induce such reactions figures in the NEA Nuclear Data High Priority Request List [1]. A measurement campaign to determine neutron induced fission cross sections of 240Pu and 242Pu at 2.51MeV and 14.83MeV has been carried out at the 3.7MV Van De Graaff linear accelerator at Physikalisch- Technische Bundesanstalt (PTB) in Braunschweig. Two identical Frisch Grid fission chambers, housing back to back a 238U and a APu target (A = 240 or A = 242), were employed to detect the total fission yield. The targets were molecular plated on 0.25mm aluminium foils kept at ground potential and the employed gas was P10. The neutron fluence was measured with the proton recoil telescope (T1), which is the German primary standard for neutron fluence measurements. The two measurements were related using a De Pangher long counter and the charge as monitors. The experimental results have an average uncertainty of 3-4% at 2.51MeV and for 6-8% at 14.81MeV and have been compared to the data available in literature. [ABSTRACT FROM AUTHOR]

Published
2017
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43. Neutron transmission and capture of241Am

Author

Lampoudis, C., primary, Kopecky, S., additional, Plompen, A., additional, Schillebeeckx, P., additional, Wynants, R., additional, Gunsing, F., additional, Sage, C., additional, Bouland, O., additional, and Noguere, G., additional

Published
2013
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44. Neutron Capture on 209Bi: Determination of the Production Ratio of 210mBi/210gBi

Author

GUNSING, F., primary, Berthoumieux, E., additional, Borella, A., additional, Belgya, T., additional, Szentmiklosi, L., additional, Schillebeeckx, P., additional, Drohe, J. C., additional, Wynants, R., additional, Colonna, N., additional, Marrone, S., additional, Tagliente, G., additional, Terlizzi, R., additional, Domingo-pardo, C., additional, Tain, J., additional, Martinez, T., additional, Massimi, C., additional, Mastinu, P. M., additional, and Milazzo, P. M., additional

Published
2011
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49. Measurements of the branching ratio of the 209Bi(n,γ)210gBi/210mBi reactions at GELINA

Author

Borella, A., primary, Belgya, T., additional, Berthoumieux, E., additional, Colonna, N., additional, Domingo-Pardo, C., additional, Drohe, J. C., additional, Gunsing, F., additional, Marrone, S., additional, Martinez, T., additional, Massimi, C., additional, Mastinu, P. M., additional, Milazzo, P. M., additional, Schillebeeckx, P., additional, Tagliente, G., additional, Tain, J., additional, Terlizzi, R., additional, and Wynants, R., additional

Published
2007
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50. Neutron transmission and capture of 241Am.

Author

Lampoudis, C., Kopecky, S., Plompen, A., Schillebeeckx, P., Wynants, R., Gunsing, F., Sage, C., Bouland, O., and Noguere, G.

Subjects
NEUTRONS, TIME-of-flight mass spectrometry, INSTITUTE for Reference Materials & Measurements (Geel, Belgium), GAMMA rays
Abstract

A set of neutron transmission and capture experiments based on the Time Of Flight (TOF) technique, were performed in order to determine the 241Am capture cross section in the energy range from 0.01 eV to 1 keV. The GELINA facility of the Institute for Reference Materials and Measurements (IRMM) served as the neutron source. A pair of C6D6 liquid scintillators was used to register the prompt gamma rays emerging from the americium sample, while a Li-glass detector was used in the transmission setup. Results from the capture and transmission data acquired are consistent with each other, but appear to be inconsistent with the evaluated data files. Resonance parameters have been derived for the data up to the energy of 100 eV. [ABSTRACT FROM AUTHOR]

Published
2013
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