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

Massimi, C., Koehler, P., Bisterzo, S., Colonna, N., Gallino, R., Gunsing, F., Kaeppeler, F., Lorusso, G., Mengoni, A., Pignatari, M., Vannini, G., Abbondanno, U., Aerts, G., Alvarez, H., Alvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Barbagallo, M., Baumann, P., Becvar, F., Belloni, F., Bennett, M., Berthoumieux, E., Calviani, M., Calvino, F., Cano-Ott, D., Capote, R., Carrapico, C., Carrillo de Albornoz, A., Cennini, P., Chepel, V., Chiaveri, E., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, I., Dolfini, R., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Rauscher, T. and N TOF Collaboration (2012) Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications. ISSN 2469-9985
Copy

We have measured the neutron capture cross sections of the stable magnesium isotopes Mg-24,Mg-25,Mg-26 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 Mg-25 and Mg-26 were recorded using the total energy method based on (C6H6)-H-2 detectors. 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 30 keV the new values of the stellar cross section for Mg-24, Mg-25, and Mg-26 are 3.8 +/- 0.2 mb, 4.1 +/- 0.6 mb, and 0.14 +/- 0.01 mb, respectively.
Item Type Article
Uncontrolled Keywords NUCLEAR; WAVE; RADIATIVE-CAPTURE; DIPOLE TRANSITIONS; GIANT BRANCH STARS; MASSIVE STARS; OF-FLIGHT FACILITY; S-PROCESS NUCLEOSYNTHESIS; REACTION-RATES; EVOLUTION
Date Deposited 14 Nov 2024 10:50
Last Modified 14 Nov 2024 10:50

[error in script]
Full text not available from this repository.

Atom BibTeX OpenURL ContextObject in Span OpenURL ContextObject Dublin Core MPEG-21 DIDL EndNote HTML Citation METS MODS RIOXX2 XML Reference Manager Refer ASCII Citation
Export

Downloads