Destruction of the cosmic g-ray emitter 26Al in massive stars: study of the key (n,a) reaction

Neutron destruction reactions of the cosmic g-ray emitter 26Al are of importance to determine the amount of 26Al ejected into our galaxy by supernova explosions, and for 26Al production in Asymptotic Giant Branch (AGB) stars. We performed a new measurement of the 26Al(n,a) reaction up to 160 keV neutron energy at the neutron time-of-flight facilities n TOF at CERN and GELINA at EC-JRC. We provide strengths for 10 resonances, 6 of them for the first time. We use our data to calculate astrophysical reactivities for stellar temperatures up to 0.7 GK. Our results resolve a discrepancy between the two previous direct measurements of this reaction, and indicate higher stellar destruction rates than the most recently recommended reactivity.

LEDERER-WOODS Claudia;  WOODS P. J.;  DAVINSON T.;  ESTRADE A.;  HEYSE Jan;  KAHL D;  LONSDALE S.;  PARADELA DOBARRO Carlos;  SCHILLEBEECKX Peter;  ABERLE O.;  AMADUCCI S.;  ANDRZEJEWSKI J.;  AUDOUIN L.;  BACAK M.;  BALIBREA J.;  BARBAGALLO M;  BECVAR F.;  BERTHOUMIEUX E.;  BILLOWES J.;  BOSNAR D.;  BROWN S;  CAAMANO M.;  CALVIANI M.;  CALVIÑO F.;  CANO-OTT D.;  CARDELLA R.;  CASANOVAS A.;  CERUTTI F.;  CHEN Y. H.;  CHIAVERI E.;  COLONNA N.;  CORTES-GIRALDO M. A.;  CORTÉS G. P.;  COSENTINO Luigi;  CRISTALLO S.;  DAMONE L.;  DIAKAKI M.;  DOMINGO-PARDO C.;  DRESSLER R.;  DUPONT E.;  DURAN I.;  FERNÁNDEZ-DOMÍNGEZ B.;  FERRARI A.;  FERREIRA P.;  FERRER F. J.;  FINOCCHIARO Paolo;  FURMAN V.;  GARCIA A. R.;  GAWLIK A.;  GILARDONI S.;  GLODARIU T.;  GONCALVES I. F.;  GONZÁLEZ-ROMERO E.;  GRIESMAYER E.;  GUERRERO C.;  GUNSING F.;  GÖBEL K.;  HARADA H.;  HEINITZ S.;  JENKINS D. G.;  JERICHA E.;  KADI Y.;  KAEPPELER F.;  KALAMARA A.;  KAVRIGIN P.;  KIMURA A.;  KIVEL N.;  KOKKORIS M.;  KRTIČKA M.;  KURTULGIL D.;  LEAL-CIDONCHA E.;  LEEB H.;  LERENDEGUI-MARCO J.;  LO MEO S.;  MACINA D.;  MANNA A;  MARGANIEC J.;  MARTÍNEZ T.;  MASI A.;  MASSIMI C.;  MASTINU P.;  MASTROMARCO M.;  MAUGERI E.;  MAZZONE A.;  MENDOZA E.;  MENGONI A.;  MILAZZO P.M.;  MINGRONE F.;  MUSUMARRA A.;  NEGRET A.;  NOLTE R.;  OPREA A.;  PATRONIS N.;  PAVLIK A.;  PERKOWSKI J.;  PORRAS I.;  PRAENA J.;  QUESADA J.;  RADECK D.;  RAUSCHER T.;  REIFARTH R.;  RUBBIA C.;  RYAN J.;  SABATE-GILARTE M;  SAXENA A.;  SCHUMANN D.;  SEDYSHEV P.;  SMITH A. G.;  SOSNIN N. V.;  STAMATOPOULOS A.;  TAGLIENTE G.;  TAIN J.L.;  TARIFENO-SALDIVIA A.;  TASSAN-GOT L.;  VALENTA S.;  VANNINI G.;  VARIALE V.;  VAZ P.;  VENTURA A.;  VLACHOUDIS V.;  VLASTOU R.;  WALLNER A.;  WARREN S.;  WEISS C.;  WRIGHT T. J.;  ZUGEC P.; 

2021-11-04

AMER PHYSICAL SOC

JRC126433

2469-9985 (online),   

https://link.aps.org/doi/10.1103/PhysRevC.104.L032803,    https://publications.jrc.ec.europa.eu/repository/handle/JRC126433,   

10.1103/PhysRevC.104.L032803 (online),