Search Results - "Becvar, F"

Simulation of γ cascades in complex nuclei with emphasis on assessment of uncertainties of cascade-related quantities by Bečvář, F.

“…A new simulation of nuclear γ cascades by the Monte Carlo method is described. It makes it possible to generate artificially individual events of the γ-cascade…”
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Methodology of positron lifetime spectroscopy: Present status and perspectives by Bečvář, F.

“…Achievements in instrumentation for positron lifetime measurements are summarized with emphasis on digital spectrometric systems. The main part of the data…”
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The asset of ultra-fast digitizers for positron-lifetime spectroscopy by Bečvář, F., Čížek, J., Procházka, I., Janotová, J.

“…A spectrometer for positron-lifetime measurements assembled from two BaF 2 scintillation detectors and two 8-bit, 4 GS s - 1 digitizes in a master–slave…”
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High-resolution positron lifetime measurement using ultra fast digitizers Acqiris DC211 by BECVAR, F, CIZEK, J, PROCHAZKA, I

“…This work demonstrates that a significant improvement of the timing resolution, simultaneously keeping coincidence count rate high enough, can be achieved by…”
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Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications by Massimi, C., Koehler, P., Bisterzo, S., Colonna, N., Gallino, R., Gunsing, F., Käppeler, F., Lorusso, G., Mengoni, A., Pignatari, M., Vannini, G., Abbondanno, U., Aerts, G., Álvarez, H., Álvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Barbagallo, M., Baumann, P., Bečvář, F., Belloni, F., Bennett, M., Berthoumieux, E., Calviani, M., Calviño, F., Cano-Ott, D., Capote, R., Carrapiço, C., Carrillo de Albornoz, A., Cennini, P., Chepel, V., Chiaveri, E., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, I., Dolfini, R., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fitzpatrick, L., Frais-Koelbl, H., Fujii, K., Furman, W., Goncalves, I., González-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Herwig, F., Hirschi, R., Igashira, M., Isaev, S., Jericha, E., Kadi, Y., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Konovalov, V., Kopecky, S., Kossionides, E., Krtička, M., Lampoudis, C., Leeb, H., Lederer, C., Lindote, A., Lopes, I., Losito, R., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Martínez, T., Mastinu, P., Mendoza, E., Milazzo, P. M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O’Brien, S., Oshima, M., Pancin, J.

“…We have measured the neutron capture cross sections of the stable magnesium isotopes 24,25,26Mg in the energy range of interest to the s process using the…”
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High-accuracy determination of the neutron flux at n_TOF by Barbagallo, M., Guerrero, C., Tsinganis, A., Tarrío, D., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M. A., Domingo-Pardo, C., Duran, I., Dressler, R., Dzysiuk, N., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A. R., Giubrone, G., Göbel, K., Gómez-Hornillos, M. B., Gonçalves, I. F., González-Romero, E., Griesmayer, E., Gunsing, F., Gurusamy, P., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Kivel, N., Kokkoris, M., Krtička, M., Kroll, J., Lampoudis, C., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Manousos, A., Marganiec, J., Martınez, T., Massimi, C., Mastinu, P. F., Mastromarco, M., Meaze, M., Mendoza, E., Milazzo, P. M., Mingrone, F., Mirea, M., Mondalaers, W., Papaevangelou, T., Paradela, C., Perkowski, J., Plompen, A., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rubbia, C., Sabate-Gilarte, M., Sarmento, R., Saxena, A., Schillebeeckx, P., Schmidt, S., Schumann, D., Steinegger, P., Tagliente, G., Tain, J. L., Tassan-Got, L., Valenta, S., Vannini, G., Variale, V., Vaz, P., Ventura, A., Versaci, R., Vermeulen, M. J., Vlachoudis, V., Vlastou, R., Wallner, A., Weiß, C., Wright, T., Žugec, P.

“…The neutron flux of the n_TOF facility at CERN was measured, after installation of the new spallation target, with four different systems based on three…”
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Distribution of total radiation widths for neutron resonances of Pt isotopes by Koehler, P.E., Bečvář, F., Krtička, M.

“…High quality neutron capture and transmission data were measured on isotopically enriched 192,194,195,196Pt and natural Pt samples at ORELA. R-matrix analysis…”
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Optimized γ ‐ multiplicity ‐ based spin assignments of s-wave neutron resonances by Bečvář, F., Koehler, P.E., Krtička, M., Mitchell, G.E., Ullmann, J.L.

“…The multiplicity of γ ‐ ray emission following neutron capture at isolated resonances carries valuable information on the resonance spin. Several methods…”
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Neutron resonance data exclude random matrix theory by Koehler, P.E., Bečvář, F., Krtička, M., Guber, K.H., Ullmann, J.L.

“…Almost since the time it was formulated, the overwhelming consensus has been that random matrix theory (RMT) is in excellent agreement with neutron resonance…”
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Measurement of the angular distribution of fission fragments using a PPAC assembly at CERN n_TOF by Tarrío, D., Leong, L.S., Audouin, L., Duran, I., Paradela, C., Tassan-Got, L., Le Naour, C., Bacri, C.O., Petitbon, V., Mottier, J., Caamaño, M., Altstadt, S., Andrzejewski, J., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Diakaki, M., Dzysiuk, N., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A.R., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., Griesmayer, E., Guerrero, C., Gunsing, F., Gurusamy, P., Jenkins, D.G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Koehler, P., Kokkoris, M., Krtička, M., Kroll, J., Langer, C., Lederer, C., Leeb, H., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P.F., Mastromarco, M., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mingrone, F., Mirea, M., Mondalaers, W., Pavlik, A., Perkowski, J., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Rubbia, C., Sarmento, R., Schillebeeckx, P., Schmidt, S., Tagliente, G., Tain, J.L., Tsinganis, A., Valenta, S., Vannini, G., Variale, V., Ventura, A., Versaci, R., Vermeulen, M.J., Vlachoudis, V., Wallner, A., Ware, T., Weigand, M., Weiß, C., Wright, T.J., Žugec, P.

“…A fission reaction chamber based on Parallel Plate Avalanche Counters (PPACs) was built for measuring angular distributions of fragments emitted in…”
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Nuclear data activities at the n_TOF facility at CERN by Gunsing, F., Aberle, O., Bécares, V., Balibrea-Correa, J., Barbagallo, M., Barros, S., Bečvář, F., Beinrucker, C., Berthoumieux, E., Billowes, J., Brugger, M., Caamaño, M., Calviño, F., Calviani, M., Cano-Ott, D., Cardella, R., Casanovas, A., Castelluccio, D. M., Chen, Y. H., Chiaveri, E., Colonna, N., Cortés-Giraldo, M. A., Cortés, G., Cosentino, L., Deo, K., Domingo-Pardo, C., Dressler, R., Fernández-Domínguez, B., Ferreira, P., Furman, V., Ganesan, S., García, A. R., Gawlik, A., Gheorghe, I., González, E., Goverdovski, A., Griesmayer, E., Guerrero, C., Harada, H., Heinitz, S., Hernández-Prieto, A., Heyse, J., Jenkins, D. G., Jericha, E., Käppeler, F., Katabuchi, T., Kavrigin, P., Ketlerov, V., Khryachkov, V., Kivel, N., Kokkoris, M., Krtička, M., Leal-Cidoncha, E., Lederer, C., Leeb, H., Lerendegui, J., Licata, M., Lo Meo, S., Losito, R., Macina, D., Marganiec, J., Martínez, T., Masi, A., Mastromarco, M., Matteucci, F., Mazzone, A., Milazzo, P. M., Mingrone, F., Musumarra, A., Nolte, R., Paradela, C., Patronis, N., Perkowski, J., Porras, I., Praena, J., Rajeev, K., Reifarth, R., Riego-Perez, A., Rout, P., Radeck, D., Rubbia, C., Ryan, J. A., Sabaté-Gilarte, M., Saxena, A., Schumann, D., Smith, A. G., Stamatopoulos, A., Suryanarayana, S. V., Tagliente, G., Tain, J. L., Tassan-Got, L., Tsinganis, A., Vannini, G., Ventura, A., Vlachoudis, V., Vlastou, R., Weigand, M., Weiss, C., Wolf, C., Žugec, P.

“… Nuclear data in general, and neutron-induced reaction cross sections in particular, are important for a wide variety of research fields. They play a key role…”
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Recent Results on Studying Photon Strength Functions in Rare-earth Nuclei by Valenta, S., Bečvář, F., Kroll, J., Krtička, M.

“…According to the statistical model of the nucleus, the photon strength functions and nuclear level densities are the only entities that describe the average…”
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A high-resolution BaF2 positron-lifetime spectrometer and experience with its long-term exploitation by Bečvář, F., Čı́žek, J., Lešták, L., Novotný, I., Procházka, I., Šebesta, F.

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New experimental validation of the pulse height weighting technique for capture cross-section measurements by Abbondanno, U, Alvarez, H, Andriamonje, S, Angelopoulos, A, Assimakopoulos, P, Bacri, C.O, Badurek, G, Bečvář, F, Beer, H, Benlliure, J, Berthier, B, Berthomieux, E, Boffi, S, Borcea, C, Bustreo, N, Calviño, P, Capote, R, Carlson, P, Cennini, P, Chepel, V, Chiaveri, E, Coceva, C, Cortes, G, Cortina, D, Couture, A, Dababneh, S, Dahlfors, M, Dolfini, R, Domingo-Pardo, C, Eleftheriadis, C, Embid-Segura, M, Ferreira-Lourenco, L, Frais-Koelbl, H, Goncalves, I.F, Goverdovski, A, Griesmayer, E, Gunsing, F, Heil, M, Herrera-Martinez, A, Ioannides, K.G, Janeva, N, Jericha, E, Kadi, Y, Kelic, A, Koehler, P.E, Konovalov, V, Kossionides, E, Lacoste, V, Lopes, M.I, Lozano, M, Lukic, S, Markov, S, Marrone, S, Mengoni, A, Milazzo, P.M, Minguez, E, Moreau, C, Neves, F, Oberhummer, H, O'Brien, S, Papaevangelou, T, Paradela, C, Pavlik, A, Pavlopoulos, P, Perez-Parra, A, Perlado, J.M, Perrot, L, Peskov, V, Plompen, A, Plukis, A, Poch, A, Pretel, C, Quesada, J.M, Radici, M, Raman, S, Rauscher, T, Rejmund, F, Rosetti, M, Rullhusen, P, Salgado, J, Savvidis, E, Soares, J.C, Stephan, C, Tagliente, G, Tain, J.L, Tavora, L.M.N, Terlizzi, R, Tsangas, N, Vannini, G, Vaz, P, Ventura, A, Villamarin-Fernandez, D, Vincente-Vincente, M, Vlachoudis, V, Vlastou, R, Voss, F, Wendler, H, Wiescher, M, Wisshak, K, Zanini, L

“…The accuracy of the pulse height weighting technique for the determination of neutron capture cross-sections is investigated. The technique is applied to…”
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Anomalous fluctuations of s-wave reduced neutron widths of 192,194Pt resonances by Koehler, P E, Becvár, F, Krticka, M, Harvey, J A, Guber, K H

“…We obtained an unprecedentedly large number of s-wave neutron widths through R-matrix analysis of neutron cross-section measurements on enriched Pt samples…”
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Simultaneous measurement of neutron-induced capture and fission reactions at CERN by Guerrero, C., Berthoumieux, E., Cano-Ott, D., Mendoza, E., Andriamonje, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Billowes, J., Brugger, M., Calviani, M., Calviño, F., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., Colonna, N., Cortés, G., Cortés-Giraldo, M. A., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Duran, I., Eleftheriadis, C., Fernández-Ordóñez, M., Ferrari, A., Ganesan, S., Giubrone, G., Gómez-Hornillos, M. B., Gonçalves, I. F., González-Romero, E., Gramegna, F., Griesmayer, E., Gunsing, F., Jenkins, D., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kroll, J., Krtička, M., Lebbos, E., Lederer, C., Leeb, H., Losito, R., Lozano, M., Manousos, A., Marganiec, J., Marrone, S., Martinez, T., Massimi, C., Mastinu, P. F., Meaze, M., Mengoni, A., Milazzo, P. M., Paradela, C., Pavlik, A., Perkowski, J., Plag, R., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Roman, F., Rubbia, C., Sarmento, R., Tagliente, G., Tain, J. L., Tarrío, D., Tassan-Got, L., Tsinganis, A., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vermeullen, M., Vlachoudis, V., Vlastou, R., Wallner, A., Ware, T., Weiß, C., Wright, T.

“…The measurement of the capture cross-section of fissile elements, of utmost importance for the design of innovative nuclear reactors and the management of…”
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The two-step gamma cascade method as a tool for studying photon strength functions of intermediate-weight and heavy nuclei by Bečvář, F., Honzátko, J., Krtička, M., Pašić, S., Rusev, G., Tomandl, I.

“…The method of two-step γ cascades following the thermal neutron capture is described. An example of two-step cascade data from measurements with 162Dy target…”
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Neutron measurements for advanced nuclear systems: The n_TOF project at CERN by Colonna, N., Andriamonje, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthier, B., Berthoumieux, E., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cennini, P., Cerutti, F., Chiaveri, E., Chin, M., Cortés, G., Cortés-Giraldo, M.A., Diakaki, M., Dillmann, I., Domingo-Pardo, C., Duran, I., Fernández-Ordóñez, M., Ferrari, A., Fraval, K., Ganesan, S., Giomataris, I., Giubrone, G., Gómez-Hornillos, M.B., Gonçalves, I.F., González-Romero, E., Gramegna, F., Guerrero, C., Gunsing, F., Harrisopulos, S., Heil, M., Ioannides, K., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Krtička, M., Lebbos, E., Lederer, C., Leeb, H., Losito, R., Lozano, M., Marganiec, J., Marrone, S., Martinez, T., Massimi, C., Mastinu, P.F., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P.M., Mosconi, M., Nolte, R., Papaevangelou, T., Paradela, C., Pavlik, A., Perkowski, J., Plag, R., Plompen, A., Praena, J., Quesada, J.M., Rauscher, T., Reifarth, R., Roman, F., Rubbia, C., Sarmento, R., Tagliente, G., Tain, J.L., Tarrìo, D., Tassan-Got, L., Tlustos, L., Tsinganis, A., Vannini, G., Variale, V., Vaz, P., Ventura, A., Vlachoudis, V., Vlastou, R., Vykydal, Z., Wallner, A., Weiß, C.

“…A few years ago, the neutron time-of-flight facility n_TOF was built at CERN to address some of the urgent needs of high-accuracy nuclear data for Accelerator…”
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Performance of the neutron time-of-flight facility n_TOF at CERN by Guerrero, C., Tsinganis, A., Berthoumieux, E., Barbagallo, M., Belloni, F., Gunsing, F., Weiß, C., Chiaveri, E., Calviani, M., Altstadt, S., Andriamonje, S., Andrzejewski, J., Audouin, L., Bécares, V., Bečvář, F., Billowes, J., Boccone, V., Bosnar, D., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chin, M., Colonna, N., Cortés, G., Diakaki, M., Domingo-Pardo, C., Duran, I., Dressler, R., Dzysiuk, N., Eleftheriadis, C., Ferrari, A., Fraval, K., Ganesan, S., García, A. R., Giubrone, G., Göbel, K., Gómez-Hornillos, M. B., Gonçalves, I. F., González-Romero, E., Griesmayer, E., Hernández-Prieto, A., Jenkins, D. G., Jericha, E., Kadi, Y., Käppeler, F., Karadimos, D., Kivel, N., Koehler, P., Kokkoris, M., Krtička, M., Kroll, J., Lampoudis, C., Langer, C., Leal-Cidoncha, E., Lederer, C., Leeb, H., Leong, L. S., Losito, R., Manousos, A., Marganiec, J., Martínez, T., Massimi, C., Mastinu, P. F., Mastromarco, M., Meaze, M., Mendoza, E., Mengoni, A., Milazzo, P. M., Mingrone, F., Mirea, M., Mondalaers, W., Papaevangelou, T., Paradela, C., Pavlik, A., Perkowski, J., Praena, J., Quesada, J. M., Rauscher, T., Reifarth, R., Riego, A., Roman, F., Sarmento, R., Schillebeeckx, P., Schumann, D., Steinegger, P., Tagliente, G., Tain, J. L., Tarrío, D., Tassan-Got, L., Variale, V., Vaz, P., Versaci, R., Vermeulen, M. J., Vlastou, R., Wallner, A., Ware, T., Weigand, M., Wright, T., Žugec, P.

“… The neutron time-of-flight facility n_TOF features a white neutron source produced by spallation through 20GeV/ c protons impinging on a lead target. The…”
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Further indication of a low quartz structure at the SiO2/Si interface from coincidence Doppler broadening spectroscopy by BRAUER, G, BECVAR, F, ANWAND, W, SKORUPA, W

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