Study of Photon Strength Functions of Actinides: the case of U-235, Np-238 and Pu-241

The decay from excited levels in medium and heavy nuclei can be described in a statistical approach by means of Photon Strength Functions and Level Density distributions combined with the theory of the compound. The study of electromagnetic cascades following neutron capture by means of high efficie...

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Detalles Bibliográficos
Autores principales: Guerrero, C, Alvarez-Velarde, F, Cano-Ott, D, Martinez, T, Mendoza, E, Villamarin, D, Colonna, N, Meaze, M H, Marrone, S, Tagliente, G, Terlizzi, R, Belloni, F, Abbondanno, U, Fujii, K, Milazzo, P M, Moreau, C, Aerts, G, Berthoumieux, E, Dridi, W, Gunsing, F, Pancin, J, Perrot, L, Plukis, A, Alvarez, H, Duran, I, Paradela, C, Andriamonje, S, Calviani, M, Chiaveri, E, Gonzalez-Romero, E, Kadi, Y, Vicente, M C, Vlachoudis, V, Andrzejewski, J, Marganiec, J, Assimakopoulos, P, Karadimos, D, Karamanis, D, Papachristodoulou, C, Patronis, N, Audouin, L, David, S, Ferrant, L, Isaev, S, Stephan, C, Tassan-Got, L, Badurek, G, Jericha, E, Leeb, H, Oberhummer, H, Pigni, M T, Baumann, P, Kerveno, M, Lukic, S, Rudolf, G, Becvar, F, Krticka, M, Calvino, F, Capote, R, Carrillo De Albornoz, A, Marques, L, Salgado, J, Tavora, L, Vaz, P, Cennini, P, Dahlfors, M, Ferrari, A, Gramegna, F, Herrera-Martinez, A, Mastinu, P, Praena, J, Sarchiapone, L, Wendler, H, Chepel, V, Ferreira-Marques, R, Goncalves, I, Lindote, A, Lopes, I, Neves, F, Cortes, G, Poch, A, Pretel, C, Couture, A, Cox, J, O'brien, S, Wiescher, M, Dillman, I, Kappeler, F, Mosconi, M, Plag, R, Voss, F, Walter, S, Wisshak, K, Dolfini, R, Rubbia, C, Domingo-Pardo, C, Tain, J L, Eleftheriadis, C, Savvidis, I, Frais-Koelbl, H, Griesmayer, E, Furman, W, Konovalov, V, Goverdovski, A, Ketlerov, V, Haas, B, Haight, R, Reifarth, R, Heil, M, Igashira, M, Koehler, P, Kossionides, E, Lampoudis, C, Lozano, M, Quesada, J, Massimi, C, Vannini, G, Mengoni, A, Oshima, M, Papadopoulos, C, Vlastou, R, Pavlik, A, Pavlopoulos, P, Plompen, A, Rullhusen, P, Rauscher, T, Rosetti, M, Ventura, A
Lenguaje:eng
Publicado: 2010
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.3938/jkps.59.1510
http://cds.cern.ch/record/1272672
Descripción
Sumario:The decay from excited levels in medium and heavy nuclei can be described in a statistical approach by means of Photon Strength Functions and Level Density distributions combined with the theory of the compound. The study of electromagnetic cascades following neutron capture by means of high efficiency detectors has been shown to be well suited for probing the properties of the Photon Strength Function of heavy (high level density) and/or radioactive (high background) nuclei. In this work we have investigated for the first time the validity of the recommended PSF for actinides, in particular 235U, 238Np and 241Pu. Our study includes the search for resonance structures in the PSF below Sn and draws conclusions regarding their existence and their characteristics in terms of energy, width and electromagnetic nature.

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