Title: Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications
Authors: MASSIMI C.KOEHLER P.BISTERZO S.COLONNA N.GALLINO R.GUNSING F.KAEPPELER F.LORUSSO G.MENGONI A.PIGNATARI M.VANNINI G.ABBONDANNO U.ALVAREZ H.AERTS G.ALVAREZ-VELARDE F.ANDRIAMONJE S.ANDRZEJEWSKI J.ASSIMAKOPOULOS P.AUDOUIN L.BADUREK G.BARBAGALLO M.BAUMANN P.Becvár F.BELLONI F.BENNETT M.BERTHOUMIEUX E.CALVIANI M.CALVIÑO F.CANO-OTT D.CAPOTE R.CARRAPIÇO C.CENNINI P.CARRILLO DE ALBORNOZ A.Chepel VCHIAVERI E.CORTES G.COUTURE A.COX J.DAHLFORS M.DAVID S.DILLMANN I.DOMINGO-PARDO C.DRIDI W.DURAN I.DOLFINI R.ELEFTHERIADIS C.EMBID-SEGURA M.FERRANT L.FERRARI A.FERREIRA-MARQUES R.FITZPATRICK L.Frais-Koelbl H.FUJII K.FURMAN W.GONÇALVES I.GONZALEZ-ROMERO E.GOVERDOVSKI A.GRAMEGNA F.GUERRERO C.GRIESMAYER E.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.KETLEROV V.KERVENO M.KONOVALOV V.KOPECKY StefanKOSSIONIDES E.Krticka M.LAMPOUDIS CHRISTOSLEDERER C.LEEB H.LINDOTE A.LOPES I.LOSITO R.LOZANO M.LUKIC S.MARQUES L.MARGANIEC J.MARRONE S.MARTÍNEZ T.MASTINU P.MENDOZA E.MILAZZO P. M.MOREAU C.MOSCONI M.OSHIMA M.NEVES F.OBERHUMMER H.O'BRIEN S.PANCIN J.PAPACHRISTODOULOU C.PAPADOPOULOS C.PARADELA C.PATRONIS N.PAVLIK AndreasPAVLOPOULOS P.PERROT L.PIGNI M. T.PLAG R.PLOMPEN ArjanPLUKIS A.PRAENA J.POCH A.PRETEL C.QUESADA J.RAUSCHER T.REIFARTH R.RUDOLF G.ROCKEFELLER G.ROSETTI M.SANTOS C.SALGADO J.RUBBIA C.SARCHIAPONE L.STEPHAN C.SAVVIDIS I.SARMENTO R.TAGLIENTE G.TASSAN-GOT L.TERLIZZI R.VAZ P.TARRIO D.VLASTOU R.TAIN J. L.WIESCHER M.VOSS F.TAVORA L.WALTER S.VENTURA A.VLACHOUDIS V.VILLAMARIN D.WISSHAK K.WENDLER H.
Citation: PHYSICAL REVIEW C vol. 85 no. 4 p. 044615 [15 pages]
Publisher: AMER PHYSICAL SOC
Publication Year: 2012
JRC N°: JRC73153
ISSN: 0556-2813
URI: http://link.aps.org/doi/10.1103/PhysRevC.85.044615
http://publications.jrc.ec.europa.eu/repository/handle/JRC73153
DOI: 10.1103/PhysRevC.85.044615
Type: Articles in periodicals and books
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 Directorate:Health, Consumers and Reference Materials

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