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

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.

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 V;  CHIAVERI 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 Stefan;  KOSSIONIDES E.;  KRTICKA M.;  LAMPOUDIS Christos;  LEDERER 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 Andreas;  PAVLOPOULOS P.;  PERROT L.;  PIGNI M. T.;  PLAG R.;  PLOMPEN Arjan;  PLUKIS 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.; 

2013-01-25

AMER PHYSICAL SOC

JRC73153

0556-2813,   

http://link.aps.org/doi/10.1103/PhysRevC.85.044615,    https://publications.jrc.ec.europa.eu/repository/handle/JRC73153,   

10.1103/PhysRevC.85.044615,