Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

Massimi, Cristian; T. Pigni, M.; Tarr'ıo, D.; Koehler, Paul E.; Bisterzo, S.; Colonna, Nicola; Gallino, R.; Gunsing, Frank; T., Reifarth; 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.; R., Wiescher; Audouin, L.; Badurek, G.; K¨appeler, F.; Barbagallo, M.; Baumann, P.; Bečvář, F.; Belloni, F.; A' Lvarez, H.; Bennett, M.; Berthoumieux, E.; Calviani, M.; Calviño, F.; Cano Ott, D.; Capote, R.; Carrapiço, C.; A' Lvarez-Velarde, F.; Carrillo De Albornoz, A.; Cennini, P.; Chepel, V.; Chiaveri, E.; Kaeppeler, F.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; Beˇcv'aˇr, F.; David, S.; Dillmann, I.; Dolfini, R.; Domingo Pardo, C.; Alvarez, H.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid Segura, M.; Alvarez Velarde, F.; Ferrant, L.; Ferrari, A.; Ferreira Marques, R.; Fitzpatrick, L.; Frais Koelbl, H.; Calvi˜no, F.; Fujii, K.; Furman, W.; Goncalves, I.; Gonzalez Romero, E.; Carrapic¸o, C.; Goverdovski, A.; Gramegna, F.; Griesmayer, E.; Guerrero, C.; Haas, B.; Becvár, F.; 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, Stefan; Kossionides, E.; Krticka, 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.; Gonçalves, I.; Mastinu, P.; Mendoza, E.; Milazzo, P. M.; Moreau, C.; Mosconi, M.; Neves, F.; Oberhummer, H.; O’Brien, S.; Oshima, M.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Paradela, C.; Patronis, N.; Pavlik, Andreas; Pavlopoulos, P.; Perrot, L.; Pigni, M. T.; Plag, R.; Plompen, Arjan; Plukis, A.; Poch, A.; Praena, J.; Pretel, C.; Quesada, J.; Rauscher, T.; Reifarth, R.; Rockefeller, G.; Rosetti, M.; Rubbia, C.; Rudolf, G.; Salgado, J.; Krtiˇcka, M.; Santos, C.; Sarchiapone, L.; Sarmento, R.; Savvidis, I.; Christos, Lampoudis; Stephan, C.; Tagliente, G.; Tain, J. L.; Tarrio, D.; H., . . Rauscher; Tassan Got, L.; Tavora, L.; Terlizzi, R.; Vaz, P.; Mart'ınez, T.; Ventura, A.; Villamarin, D.; M. Milazzo, P.; Vlachoudis, V.; O'Brien, S.; Vlastou, R.; Voss, F.; Walter, S.; Wendler, H.; Wiescher, M.; Wisshak, K.; L. Tain, J.; Massini, C.

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American Physical Society, Physical Review C, 4(85)

DOI: 10.1103/physrevc.85.044615

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Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

Journal article published in 2012 by Cristian Massimi, M. T. Pigni, D. Tarr'ıo, Paul E. Koehler, S. Bisterzo, Nicola Colonna, R. Gallino, Frank Gunsing, Reifarth T., F. Käppeler, G. Lorusso, A. Mengoni, M. Pignatari, G. Vannini, U. Abbondanno and other authors.

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Abstract

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 neutron time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and from samples enriched in 25Mg and 26Mg were recorded using the total energy method based on C6D6 detetors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross-sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30keV the stellar cross-section for 24Mg, 25Mg and 26Mg are 3.8 plus/minus 0.2 mb, 4.1 plus/minus 0.6 mb and 0.14 plus/minus 0.01 mb, respectively. ; JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

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Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

Abstract